MODEM AT COMMANDS
This file gives the functional operation of the modem. This modem utilizes
the AT&T (AT&T HSM288) chipset. The following sections describe the
functional operational of the AT commands supported and S-Register functions
and values.
Max DTE Rate:
230,400 bps is the highest DTE rate.
Escape Code Sequence:
When the modem has established a connection and has entered on-line data mode,
it is possible to break into the data transmission in order to issue further
commands to the modem in an on-line command mode. This is achieved by the DTE
sending to the modem a sequence of three ASCII characters specified by
register S2. The default character is "+". The timing of the three
characters must comply with specific time constraints. There is a guard time
before the first character (the pre-sequence time), a guard time following the
third character (the post-sequence time), and a guard time-out between the
first and second characters and between the second and third characters (the
inter-character time). These times are controlled by the value recorded in
register S12 (default is one second).
Defaults:
The AT command defaults listed within this document are based on the &F
factory settings.
AT COMMANDS:
A/ - Repeat Last Command:
This command re-executes the last command string (not to be preceded with AT
or followed by pressing the Return key)
A - Answer Command:
This command instructs the modem to go off-hook and attempt to establish
a connection without waiting for a ring.
Bn - Line Modulation Options:
This command is used to configure the modem to the desired
communications standard setting at a particular line speed.
B0 Selects ITU-T V.22 mode when the modem is at 1200 bps, and
ITU-T V.21 when the modem is at 300 bps.
B1 Selects BELL 212A when the modem is at 1200 bps, and
BELL 103 when the modem is at 300 bps. (default)
B2 Selects V.23 originate mode receive 1200 bps, transmit
75 bps; answer mode receive 75 bps, transmit 1200 bps.
B3 Selects V.23 originate mode receive 75 bps, transmit
1200 bps; answer mode receive 1200 bps, transmit 75 bps.
Result Codes:
OK n = 0, 1, 2, or 3.
ERROR Otherwise.
Cn - Carrier Control Option: (Dummy Command for compatibility)
This command is used by some modems to control the transmit carrier.
C0 is not supported and will respond with error if this command is
given. C1 is accepted without error, but does not control carrier
switching.
C0 Returns ERROR.
C1 No action.
Result Codes:
OK n = 1.
ERROR Otherwise.
Dn - Dial Command:
This command begins the dialing sequence. The string "n" (modifiers
and telephone number) is entered after the D command.
Dial Modifiers:
P Pulse Dial - Only digits 0-9 can be dialed in pulse dial mode.
R Reverse Dial Mode - Originates call in answer mode.
S=n Dial Stored Number - Dials the number stored in location n (0-3).
T Tone DTMF Dial - Any digit 0-9, *, #, A, B, C, and D may be dialed
as a tone.
W Wait For Dial Tone - The modem waits for dial tone before
processing the dial string.
, Pause - Causes the modem to pause before processing the next
character in dial string.
! Flash Hook - This causes the modem to go on-hook for 0.5 S, then
return off-hook.
@ Wait For Quiet Answer - Wait for five seconds of silence after
dialing the number.
; Return To Idle State - Modem returns to command mode after dialing
a number without disconnecting the call.
$ Bong Dial Modifier - Delay until calling card tone is detected.
En - AT Command Echo Options:
he modem enables or disables the echo of characters to the DTE according
to the parameter supplied. The parameter value, if valid, is written to
S14 bit 1.
E0 Disables command echo.
E1 Enables command echo. (default)
Result Codes:
OK n = 0 or 1.
ERROR Otherwise.
Fn - On-Line Echo Command: (Dummy Command for compatibility)
This command is used by some modems to determine whether characters are
echoed to the DTE from the modem when it is in the on-line state. F0 is
not supported and will respond in error if this command is given. F1 is
accepted without error but does nothing.
F0 Returns ERROR.
F1 OK response, no action.
Result Codes:
OK n = 1.
ERROR Otherwise.
Hn - Switch Hook Control:
This command provides control over the line relay.
H0 Modem goes on-hook.
H1 Modem goes off-hook, but will not train.
Result Codes:
OK n = 0 or 1.
ERROR Otherwise.
In - Modem Identification Command:
The command instructs the modem to query its memory for information
about itself.
I0 Reports product code "MHZ AT&T V.34 + ETC + Autosync +
HOMOL + 1634 + CLASS 1 & 2 FAX/MODEM + CELL".
I1 Reports a 3-digit ROM checksum (i.e. 237). Displays the
checksum on DTE.
I2 Performs a ROM check. Calculates and verifies the checksum,
"ROM IS OK" or "ERROR".
I3 Report Firmware Revision "i.e., AC02B.
I4 Modem Information:
Mfr=MEGAHERTZ
CmdSet=MHZ_AV
Mod=V.34
Fax=1,2
ErrC=V.42,MNP
I5 Country Code. (USA=022)
I6 Modem and Code Base. (i.e., AA288DPL Rev AC)
I7 Responds with the three hex values programmed into the CELL
podule if it is present. If a CELL cable is not present, it
returns OK.
Result Codes:
OK n = 0,1,2,3,4,5,6,7
ERROR Otherwise.
Ln - Speaker Volume:
This command determines the volume level of the speaker, when supported
by the modem.
L0 Lowest speaker volume.
L1 Low speaker volume.
L2 Medium speaker volume. (default)
L3 High speaker volume.
Result Codes:
OK n = 0,1,2,3.
ERROR Otherwise.
Mn - Speaker Control:
This command determines whether the speaker function of the modem is on
or off.
M0 Speaker is always OFF.
M1 Speaker is ON until carrier present. (default)
M2 Speaker is always ON.
M3 Speaker is OFF during dialing, and ON until carrier present.
Result Codes:
OK n = 0,1,2,3.
ERROR Otherwise.
Nn - Select Negotiate Handshake:
This command controls automode enable/disable.
N0 When originating or answering, handshake only at the
communication rate specified by S-Register 37 and Bn and no
fallback.
N1 When originating or answering, start handshake only at the
communication standard specified by S-Register 37 and Bn.
During handshake, fallback to a lower speed may occur
except in \N1 mode. (default)
Result Codes:
OK n = 0, 1.
ERROR Otherwise.
On - Go On-Line:
This command returns the modem to on-line mode or data mode.
O0 Returns modem to a previously established state.
O1 Begins an equalizer retrain sequence, then returns to
line state.
O3-14 Forces the modem to a new rate that is user defined.
(New rates are defined in S62).
Result Codes:
OK n = 0, 1, 3-14 and a connection exists.
ERROR Otherwise.
P - Enable Pulse Dialing:
This command instructs the modem to use pulse dialing. Dialed digits
will be pulsed dialed until a "T" command or dial modifier is received.
Tone dial is the default setting.
Qn - Result Code Display Option:
This command controls whether the result codes are displayed to the DTE.
Q0 Enables result codes. (default)
Q1 Disables result codes.
Result Codes:
OK n = 0,1.
ERROR Otherwise.
Sn - Select an S Register:
The modem selects an S-Register.
n 0-99
Sn=m - Write to an S-Register:
This command writes a value to a specified S-register.
n = 0-99
m = 0-255
Sn? - Read an S Register:
The contents of S-register n are sent to the DTE as three decimal
digits. This informational test response is formatted with <CR><LF>
as determined by the V command currently in effect.
n = 0 - 99
T - Enable Tone Dialing:
This command instructs the modem to send DTMF tones while dialing.
Dialed digits will be tone dialed until a P command or dial modifier is
received. This is the default setting.
Vn - Result Code Form:
This command determines whether result codes (including call progress
and negotiation progress messages) are displayed as numbers or words.
V0 Numeric form, 0 for OK).
V1 Verbose, OK for OK). (default)
Result Codes:
OK n = 0 or 1.
ERROR Otherwise.
Wn - Select Extended Result Code:
This command determines which result codes will be used to describe the
type of connection and protocol that results from handshaking and
negotiation.
W0 CONNECT result code reports DTE speed;
W1 CONNECT result code reports DTE speed; Enables the CARRIER,
COMPRESSION, and PROTOCOL extended result codes. (default)
W2 CONNECT result code reports DCE speed.
Result Codes:
OK n = 0, 1, or 2.
ERROR Otherwise.
Xn - Select Result Codes/Call Progress Options:
This command enables tone detection options used in the dialing process.
As these functions are chosen, the modem's result codes are also
affected. This command is therefore frequently used to control the
modem's responses. The primary function of this control is to control
the modem's call response capabilities.
X0 Display CONNECT or "1" for all speeds.
X1 Display connect message according to ATW and AT\V, blind
dial, ignore busy tone.
X2 Display connect message according to ATW and AT\V, wait for
dial tone, ignore busy tone.
X3 Display connect message according to ATW and AT\V, blind
dial, check busy tone after dialing.
X4 Display connect message according to ATW and AT\V, wait for
dial tone, check busy tone after dialing. (default)
Result Codes:
OK n = 0 to 4.
ERROR Otherwise.
AT Command Result Codes:
Numeric Verbose Description
(Short form) (Long form)
0 OK Command executed.
1 CONNECT Line Speed is at 300 bps, DTE speed is at
300 bps, or no speed reporting is allowed.
2 RING Ring signal detected.
3 NO CARRIER Carrier signal not detected or lost.
4 ERROR Invalid command, checksum, error in command
line, or command line too long.
5 CONNECT 1200 Connection at 1200 bps. Disabled by X0.
6 NO DIAL TONE No dial tone detected. Enabled by X2 or X4.
7 BUSY Busy detected. Enabled by X3 or X4.
8 NO ANSWER No silence detected before the expiration of the
timer S7. Enabled by @ dial modifier.
10 CONNECT 2400 Connection at 2400 bps.
11 CONNECT 4800 Connection at 4800 bps.
12 CONNECT 9600 Connection at 9600 bps.
13 CONNECT 14400 Connection at 14400 bps.
14 CONNECT 19200 Connection at 19200 bps. Enabled by WO.
15 CONNECT 16800 Connection at 16800 bps.
18 CONNECT 57600 Connection at 57600 bps. Enabled by WO.
24 CONNECT 7200 Connection at 7200 bps.
25 CONNECT 12000 Connection at 12000 bps.
26 CONNECT 1200/75 Connection at 1200 bps/75 bps (V.23).
27 CONNECT 75/1200 Connection at 75 bps/200 bps (V.23).
28 CONNECT 38400 Connection at 38400 bps.
29 CONNECT 21600 Connection at 21600 bps.
30 CONNECT 24000 Connection at 24000 bps.
31 CONNECT 26400 Connection at 26400 bps.
32 CONNECT 28800 Connection at 28800 bps.
33 CONNECT 115200 Connection at 115.2 kbps.
40 CARRIER 300 V.21 or Bell 103 carrier detected at 300 bps.
Carrier reporting enabled.
42 CARRIER 75/1200 V.23 carrier - TX 75 bps, RX 1200 bps.
43 CARRIER 1200/75 V.23 carrier - TX 1200 bps, RX 75 bps.
46 CARRIER 1200 V.22 or Bell 21 carrier detected at 1200 bps.
Carrier reporting enabled.
47 CARRIER 2400 V.22bis or V.34 carrier detected at 2400 bps.
Carrier reporting enabled.
48 CARRIER 4800 V.32, V.32bis, or V.43 carrier detected at 4800 bps.
Carrier reporting enabled.
49 CARRIER 7200 V.32bis or V.34 carrier detected at 7200 bps.
Carrier reporting enabled.
50 CARRIER 9600 V.32, V.32bis, or V.34 carrier detected at
9600 bps. Carrier reporting enabled.
51 CARRIER 12000 V.32bis or V.34 carrier detected at 12000 bps.
Carrier reporting enabled.
52 CARRIER 14400 V.32bis or V.34 carrier detected at 14400 bps.
Carrier reporting enabled.
53 CARRIER 16800 V.32terbo or V.34 carrier detected at 16800 bps.
Carrier reporting enabled.
54 CARRIER 19200 V.32terbo or V.34 carrier detected at 19200 bps.
Carrier reporting enabled.
55 CARRIER 21600 V.34 carrier detected at 21600 bps. Carrier
reporting enabled.
56 CARRIER 24000 V.34 carrier detected at 24000 bps. Carrier
reporting enabled.
57 CARRIER 26400 V.34 carrier detected at 26400 bps. Carrier
reporting enabled.
58 CARRIER 28800 V.34 carrier detected at 28800 bps. Carrier
reporting enabled.
66 COMPRESSION: MNP compression negotiated.
CLASS 5
67 COMPRESSION: V.42bis compression negotiated.
V.42BIS
69 COMPRESSION: NONE No compression negotiated.
70 PROTOCOL: NONE Asynchronous mode.
77 PROTOCOL: LAP-M V.42 LAPM.
80 PROTOCOL: MNP Connection in the MNP mode of error correction.
Protocol message reporting enabled.
81 PROTOCOL: MNP 2 Connection in the MNP mode of error correction.
Protocol message reporting enabled.
82 PROTOCOL: MNP 3 Connection in the MNP mode of error correction.
Protocol message reporting enabled.
83 PROTOCOL: MNP 2,4 Connection in the MNP mode of error correction.
Protocol message reporting enabled.
84 PROTOCOL: MNP 3,4 Connection in the MNP mode of error correction.
Protocol message reporting enabled.
Yn - Dummy Command:
This command is a dummy command for compatibility.
Y0 Send OK to DTE.
Y1 Send OK to DTE.
Zn - Recall Stored Profile:
This command instructs the modem to go on hook and restore the selected
stored profile. Any non-storable parameters previously set are returned
to their factory defaults
Z0 Soft reset and recall stored profile 0.
Z1 Soft reset and recall stored profile 1.
Result Codes:
OK n = 0 or 1.
ERROR Otherwise.
&Bn - Autoretrain:
The command controls the modem action when it receives a poor signal.
&B0 Hang up on a poor received signal.
&B1 Retrain on a poor received signal. Hang up if condition
persists longer than the threshold set in register S7.
(default)
&B2 Do not hang up; do not retrain (i.e. tolerate any line).
Result Codes:
OK n = 0, 1, or 2.
ERROR Otherwise.
&Cn - Data Carrier Detect Option (Async only):
The modem command controls how the state of the DCD or RLSD (receive
line signal detect) relates to the carrier from the remote modem.
Always use &C1 for Sync mode.
&C0 State of carrier from remote modem is ignored. RLSD is always ON.
&C1 State of carrier from remote modem is tracked. RLSD reflects state of the carrier. (default)
Result Codes:
OK n = 0 or 1.
ERROR Otherwise.
&Dn - Data Terminal Ready Option:
This command interprets how the modem will respond to the state of the
DTR signal and changes to the DTR signal. This is for &M0 and &M1 only.
&M2 and &M3 always use &D2.
&D0 DTR ignored.
&D1 Go to command mode on ON-to-OFF DTR transition.
&D2 Hang up and go to command mode on ON-to-OFF DTR transition. Auto- answer is disabled if DTR is low. (default)
&D3 Reset on ON-to-OFF DTR transition.
Result Codes:
OK n = 0 to 3.
ERROR Otherwise.
&F - Load Factory Settings:
The modem loads the configuration stored and programmed at the factory.
This operation replaces all of the command options and S-register
settings in the active configuration with factory default values. When
a CELL cable is attached to the modem, the &F(0) command will reset the
active profile to the factory CELL defaults. When a CELL cable is not
attached to the modem, this command resets the active profile to the
factory landline defaults.
&F Recall factory settings as active configuration.
Result Codes:
OK n = 0.
ERROR Otherwise or if the modem is connected.
&Gn - Guard Tone Option:
This command determines which guard tone, if any, to transmit while
transmitting in the high band (answer mode). This command is only used
in V.22 and V.22bis mode.
&G0 No Guard Tones. (default)
&G1 550 Hz Guard Tone.
&G2 1800 Hz Guard Tone.
Result Codes:
OK n = 0 to 2.
ERROR Otherwise.
&Jn - Dummy Command for AutoSync:
Dummy command is only included for compatibility.
&J0 Send OK to DTE.
&J1 Send OK to DTE.
Result Codes:
OK n = 0 or 1.
ERROR Otherwise.
&Kn - Select Flow Control:
This command selects the flow control method the modem provides to the
DTE to prevent the modem's buffer from overflowing with data. A data
buffer holds the data until the modem is ready to transmit it. When the
data buffer is full, flow control instructs the DTE to stop sending to
the modem while the modem continues to send characters.
&K0 Disable flow control.
&K1 Reserved.
&K2 Reserved.
&K3 Enable bi-directional hardware flow control (RTS/CTS). (default)
&K4 Enable bi-directional XON/XOFF flow control.
Result Codes:
OK n = 0, 3, 4.
ERROR Otherwise.
&Ln - Dial Up/Lease Line Option:
This command is used to select between dial-up operations or leased-line
operations.
NOTE: The leased line option is not currently supported.
&L0 Dial Line. (default)
&L1 Leased Line. Return OK for compatibility.
Result Codes:
OK n = 0,1.
ERROR Otherwise.
&Mn - Select Sync, Async, or AutoSync Mode Options:
This command is used to select communication mode.
On-line State
&M0 Async Mode. (default)
&M1 Sync Mode 1. Async off-line and Sync on-line. Need to select &D1 and drop DTR to switch to on-line command mode.
&M2 Sync Mode 2. Autodial stored #0 on DTR OFF-to-ON, ignore &D option, always &D2 on DTR OFF-to-ON.
&M3 Sync Mode 3. Manual dial mode with talk data switch, same as &M2 when in on-line mode.
&M4 Hayes AutoSync Mode.
Result Codes:
OK n = 0, 1, 2, 3, 4
ERROR Otherwise
&Pn - Dial Pulse Ratio:
This command determines the make/break ratio used during pulse dialing.
&P0 Make = 39%, break = 61% for use in the United States.
(default)
&P1 Make = 33%, break = 67% for use in certain other countries.
Result Codes:
OK n = 0 to 1.
ERROR Otherwise.
&Qn - Communications Mode Option:
This command will select the communication mode. It is the Hayes
Command and the same as using the command &Mn.
&Q0 Asynchronous mode. (default)
&Q1 Reserved.
&Q2 Reserved.
&Q3 Reserved.
&Q4 Auto-Sync mode.
Result Codes:
OK n = 0 or 4.
ERROR Otherwise.
&Rn - CTS/RTS Option: (non-CTS flow control mode)
The functions of CTS are determined by this command.
&R0 CTS follows RTS (Synchronous modes only). (default)
&R1 CTS always true.
Result Codes:
OK n = 0, 1.
ERROR Otherwise.
&Sn - Data Set Ready (DSR) Option:
This command controls the functions of DSR. DSR indicates when the
odem is connected to a communications channel and is ready. Async mode
only. If the modem is in Sync mode, DSR is on during handshake and
on-line, off in test or idle mode.
&S0 DSR circuit always ON.
&S1 DSR circuit ON during handshaking and on-line off in test modes or in idle mode. (default)
Result Codes:
OK n = 0 or 1.
ERROR Otherwise.
&Tn - Self Test Commands:
These commands are used to configure and place the modem in various test
modes as defined by ITU-T V.54. These tests are typically used to
verify the analog and digital portions of a modem's operation.
NOTE: The analog loopback functions require a hardware jumper to be
installed in the PCMCIA modem to work properly. They have been disabled
in the PCMCIA modem since it is impossible to put the jumper on once the
covers have been installed.
&T0 Terminate test.
&T1 Local analog loopback (disabled).
&T3 Local activated remote digital loopback (RDL).
&T4 Grant request from remote for RDL test. (default)
&T5 Deny request from remote for RDL test.
&T6 Remote digital loopback test.
&T7 Remote digital loopback with self-test.
&T8 Local analog loopback with self-test (disabled).
&T9 Cellular/Lan port test (needs test fixture attached).
Result Codes:
OK n = 0, 3, 4, 5, 7, 9.
CONNECT n = 6.
ERROR Otherwise.
&V - Display Current Configuration and Stored Profiles:
This command is used to display the active and stored profiles (commands
and S register settings), along with any stored telephone numbers. It
is effected by the ~Z0 and ~Z1 command. If ~Z0 is selected, the command
displays the active profile and the 2 stored profiles. If ~Z1 is
selected, the command displays the active and either the Cellular or
Landline profile (depending upon whether or not a cell cable is
installed. If ~Z1 is selected, the &V1 command is disabled. The
following examples illustrates typically &V information displayed.
&V0 View active file, stored profile 0 and stored phone numbers.
&V1 View active file, stored profile 1 and stored phone numbers.
Example of normal profile (~Z=0):
ACTIVE PROFILE:
B1 E1 L2 M1 Q0 V1 W1 X4 &B1 &C1 &D2 &G0 &L0 &P0 &Q0 &R0 &S1 &X0 &Y0 )C0
%A013 %C1 %G1 \A3 \C0 \G0 \J0 \K5 \N3 \Q3 \T000 \V1 \X0 -J1 "H3 "O032
S00:000 S01:000 S02:043 S03:013 S04:010 S05:008 S06:005 S07:060 S08:002
S09:006 S10:014 S11:095 S12:050 S18:000 S25:005 S26:001 S37:017 S72:000
STORED PROFILE 0:
B1 E1 L2 M1 Q0 V1 W2 X4 &B1 &C1 &D2 &G0 &L0 &P0 &Q0 &R0 &S1 &X0 )C0
%A013 %C1 %G1 \A3 \C0 \G0 \J0 \K5 \N3 \Q3 \T000 \V1 \X0 -J1 "H3 "O032
S00:000 S02:043 S03:013 S04:010 S05:008 S06:005 S07:060 S08:002
S09:006 S10:014 S11:095 S12:050 S18:000 S25:005 S26:001 S37:017 S72:000
TELEPHONE NUMBERS:
&Z0=
&Z1=
&Z2=
&Z3=
Result Codes:
OK if n = 0,1.
ERROR Otherwise.
Example of enhanced Landline profile (~Z=1 without Cellular cable
attached):
ACTIVE PROFILE:
B1 E1 L2 M1 Q0 V1 W1 X4 &B1 &C1 &D2 &G0 &L0 &P0 &Q0 &R0 &S1 &X0 &F0 )C0
%A013 %C1 %G1 \A3 \C0 \G0 \J0 \K5 \N3 \Q3 \T000 \V1 \X0 -J1 "H3 "O032
S00:000 S01:000 S02:043 S03:013 S04:010 S05:008 S06:005 S07:060 S08:002
S09:006 S10:014 S11:095 S12:050 S18:000 S25:005 S26:001 S37:017 S72:000
LAND LINE USER PROFILE:
B1 E1 L2 M1 Q0 V1 W1 X4 &B1 &C1 &D2 &G0 &L0 &P0 &Q0 &R0 &S1 &X0 &F0 )C0
%A013 %C1 %G1 \A3 \C0 \G0 \J0 \K5 \N3 \Q3 \T000 \V1 \X0 -J1 "H3 "O032
S00:000 S02:043 S03:013 S04:010 S05:008 S06:005 S07:060 S08:002
S09:006 S10:014 S11:095 S12:050 S18:000 S25:005 S26:001 S37:017 S72:000
TELEPHONE NUMBERS:
&Z0=
&Z1=
&Z2=
&Z3=
Result Codes:
OK if n = 0,1.
ERROR Otherwise.
Example of enhanced cellular profile (~Z=1 with Cellular cable
attached):
ACTIVE PROFILE:
B0 E1 L2 M1 Q0 V1 W1 X4 &B1 &C1 &D2 &G0 &L0 &P0 &Q0 &R0 &S1 &X0 &F5 )C5
%A013 %C1 %G1 \A0 \C0 \G0 \J0 \K5 \N5 \Q3 \T000 \V1 \X0 -J1 "H3 "O032
S00:000 S01:000 S02:043 S03:013 S04:010 S05:008 S06:005 S07:090 S08:002
S09:006 S10:100 S11:095 S12:050 S18:000 S25:005 S26:001 S37:009 S72:000
CELLULAR USER PROFILE:
B0 E1 L2 M1 Q0 V1 W1 X4 &B1 &C1 &D2 &G0 &L0 &P0 &Q0 &R0 &S1 &X0 &F5 )C5
%A013 %C1 %G1 \A0 \C0 \G0 \J0 \K5 \N5 \Q3 \T000 \V1 \X0 -J1 "H3 "O032
S00:000 S02:043 S03:013 S04:010 S05:008 S06:005 S07:090 S08:002
S09:006 S10:100 S11:095 S12:050 S18:000 S25:005 S26:001 S37:009 S72:000
TELEPHONE NUMBERS:
&Z0=
&Z1=
&Z2=
&Z3=
Result Codes:
OK if n = 0,1.
ERROR Otherwise.
&Wn - Store Active Profile:
This command stores certain command options and S-register values into
one of the nonvolatile stored profile memory locations. This command is
effected by the ~Z command and by the presence or absence of a CELL
cable.
&W0 Save active configuration as user profile 0.
&W1 Save active configuration as user profile 1.
Result Codes:
OK n = 0 or 1.
ERROR Otherwise.
&Xn - Sync Transmit Clock Source Option:
This command determines how the DTE transmit clock is generated while
the modem is in synchronous modes.
NOTE: This command is accepted by the PCMCIA modem, but there is no
effect.
&X0 The modem generates the transmit clock and applies it to pin 15 (RS232). (default)
&X1 The DTE generates the transmit clock on pin 24 (RS232) and the modem applies it to pin 15 (RS232).
&X2 The modem derives the transmit clock from the receive carrier signal and applies it to pin 15 (RS232).
Result Codes:
OK n = 0, 1, 2.
ERROR Otherwise.
&Yn - Select Stored Profile on Power-up:
This command selects which user profile will be recalled into the
active profile (powerup). If the Enhanced Mode is selected (~Z=1),
any &Y command will return ERROR if the user attempts to use it. The
&Y command is ignored until the user returns to the normal profile mode
(~Z=0). It will return the same &Y value which was set before entering
the Enhanced Mode.
&Y0 Recall user profile 0 on power-up. (default)
&Y1 Recall user profile 1 on power-up.
Result Codes:
OK n = 0 to 1.
ERROR Otherwise.
&Zn=x - Store Telephone Number:
This command is used to store up four telephone numbers. The maximum
number of digits per number is 36.
&Zn=x (n = 0 to 3, and x = dial string: 0-9, A, B, C, D, H, #, *, T, P, R, W, @, comma, !, ;.$.)
Result Codes:
OK For parameters 0 to 3 and for dial string of less than 41 digits.
ERROR If "n" is greater than 3 or if the dial string "x" exceeds 40 digits.
AT\ (BACK SLASH) COMMANDS:
\An - Block Size for V.34:
This command sets the maximum block size during connection. This option
forces the modem to transmit smaller blocks of data. This command is
typically used for poor quality telephone lines where transmitting
smaller blocks of data avoids retransmissions; thus improving
throughput.
\A0 Set maximum block size = 64 characters.
\A1 Set maximum block size = 128 characters.
\A2 Set maximum block size = 192 characters.
\A3 Set maximum block size = 256 characters. (default)
\A4 Set maximum block size = 32 characters (for ETC).
Result Codes:
OK n = 0 to 4.
ERROR Otherwise.
\Bn - Transmit Break:
This command sends a break to the remote modem. It is equivalent to
using the <BREAK> key on the terminal. This command can be used if the
keyboard does not have a <BREAK> key.
\B1-\B9 Break length in 100 mS units. (default = 0) (Non-error corrected mode only)
Result Codes:
OK Always the response.
\Cn - Set Auto-reliable Buffer:
This command determines whether the modem buffers the data it receives
during link negotiations.
\C0 Does not buffer. (default)
\C1 Buffers data on answering modem for 4 seconds, until 200 characters have been buffered, then switches to normal mode and the buffered characters are passed to the serial port. If a SYN character is detected, reliable mode is attempted.
\C2 Does not buffer data on answering modem. Switches to normal mode upon receipt of auto-reliable character and passes it to the serial port. (default)
Result Codes:
OK n = 0 to 2.
ERROR Otherwise.
\Gn - Set Modem Port Flow Control (only in Normal Mode):
This command selects the modem's DCE or port flow control. If the modem
is receiving data from the remote modem faster than it can be processed,
enabling port flow control allows the modem to handle the data
efficiently.
\G0 Disable port flow control. (default)
\G1 Set port flow control to XON/XOFF flow control.
Result Codes:
OK n = 0 or 1.
ERROR Otherwise.
\Jn - Constant DTE Speed Option:
Controls whether the modem will adjust the DTE speed to match the line
speed when the connection is complete.
\J0 DCE and DTE rates are independent. (default)
\J1 DTE rate adjust to DCE connection rate after on-line.
Result Codes:
OK n=0 or 1.
ERROR Otherwise.
\Kn - Set Break Control:
This command selects the way in which the modem handles a break signal.
This modem can handle a break signal in one of three ways: expedited
destructive, expedited, or queued break.
(In on-line data mode with V.42 protocol or normal mode, then break
signal to DTE through RS232).
0, 2, 4 Enter on-line command mode but do not send break to the remote modem.
1 Empty the data buffers and send break to the remote modem immediately.
3 Send break to the remote modem immediately.
5 Send break to the remote modem in sequence with data.
(In on-line data mode with direct mode, then receive break at serial
port).
0, 2, 4 Immediately send break and enter on-line command state.
1, 3, 5 Immediately send break through.
(In on-line command mode with V.42 protocol or normal mode, the DTE
issues a transmit break command).
0, 1 Empty the data buffers and send break to the remote modem.
2, 3 Immediately send break to the remote modem.
4, 5 Send break to the remote modem in sequence with data.
(In on-line mode with normal mode, receive break signal from remote at
modem port, send to serial port).
0, 1 Empty the data buffers and send back to the local DTE.
2, 3 Immediately send break to local DTE.
4, 5 Send break to local DTE in sequence with data.
Default: \K5
Result Codes:
OK n = 0 to 5.
ERROR Otherwise.
\Nn - Modem Protocol Options:
This command selects the type of data connection the modem can
establish.
\N0 Normal mode. No protocol, but flow control is allowed.
\N1 Direct mode. No protocol and no flow control is allowed.
\N2 MNP reliable mode.
\N3 LAPM, MNP, or Normal Mode. (default)
\N4 LAPM or MNP Mode.
\N5 LAPM mode.
Result Codes:
OK n = 0 to 5.
ERROR Otherwise.
\Qn - DTE Flow Control Options:
This command selects the flow control method the modem provides to the
DTE to prevent the modem's buffer from overflowing with data. A data
buffer holds the data until the modem is ready to transmit it. When the
data buffer is full, flow control instructs the DTE to stop sending to
the modem while the modem continues to send characters.
NOTE: This command does the same function as &K command (see above).
\Q0 Disable flow control.
\Q1 XON/XOFF software flow control.
\Q2 CTS flow control to DTE.
\Q3 RTS/CTS hardware flow control. (default)
Result Codes:
OK n = 0, 1, 2, 3.
ERROR Otherwise.
\Tn - Set Inactivity Timer:
This command allows the modem to disconnect if no data activity has
occurred for the selected period of time.
n = 0 Disable inactivity timer (default).
n = 1-90 Length in minutes.
\Vn - Protocol Result Code:
This command option only responds with W0 and W2 options.
\V0 Disable protocol result code (i.e. CONNECT 9600).
\V1 Enable protocol result code (i.e. CONNECT 9600/LAPM). (default)
Result Codes:
OK n = 0,1.
ERROR Otherwise.
\Xn - Set XON/XOFF Pass-Through Option:
This command is valid only if XON/XOFF flow control is enabled such as
\G1 or \Q1; otherwise, XON/XOFF will not be detected by the modem, so
always pass through.
\X0 Process XON/XOFF per \G and \Q option, if XON/XOFF flow control is enabled, do not pass XON/XOFF to the remote or local DTE characters. (default)
\X1 Process XON/XOFF per \G and \Q option, always pass XON/XOFF to the remote modem or local DTE.
Result Codes:
OK n = 0 or 1.
ERROR Otherwise.
AT% COMMANDS:
%An - Set Auto-reliable Fallback Character:
This command allows the user to specify the character that tells the
modem to return (or fallback) from auto-reliable (MNP) mode to a normal
connection on the answering modem.
Result Codes:
OK n = 1-127 (ASCII character).
ERROR Otherwise.
Default: 13
%Cn - Data Compression:
This command controls the MNP Class 5. The modem can only perform data
compression on an error corrected link.
%C0 Disable MNP5 data compression.
%C1 Enable MNP5 data compression. (default)
Result Codes:
OK n = 0 or 1.
ERROR Otherwise.
%Gn - Auto Fallforward/Fallback Enable:
This command selects the auto fallback option.
%G0 Disabled.
%G1 Enabled. (default)
Result Codes:
OK n = 0, 1.
ERROR Otherwise.
AT - (DASH) COMMANDS:
-Bn - Double Baud Rate Select:
This command determines whether the modem normal baud rate or double
baud rate is enabled.
-B1 Normal Baud Rate 115,200.
-B2 Double Baud Rate Enable 230,400. (default)
-Jn - Set V.42 Detection Phase:
This command determines whether the originating modem sends a sequence
to the answering modem to determine the type of error correction it has
enabled.
-J0 Disables the V.42 detection phase.
-J1 Enables the V.42 detection phase. (default)
Result Codes:
OK n = 0, 1
ERROR Otherwise
-V - Display Root Firmware Version Number:
This command will display the base firmware version information
(i.e. P34A1016)
AT" (QUOTE) COMMANDS:
"Hn - V.42bis Compression Control:
This command controls V.42bis data compression over an error correction
link.
"H0 Disable V.42bis.
"H1 Enable V.42bis only when transmitting data.
"H2 Enable V.42bis only when receiving data.
"H3 Enable V.42bis for both directions. (default)
Result Codes:
OK n = 0, 1, 2, 3.
ERROR Otherwise.
"Nn - V.42bis Dictionary Size:
This command controls V.42bis dictionary size.
"N0 512 bytes
"N1 1024 bytes
"N2 1536 bytes (default)
Result Codes:
OK n = 0, 1, 2.
ERROR Otherwise.
"On - Select V.42bis Maximum String Length:
This command selects the string size for V.42bis compression.
n = 6-64
Default = 32
AT~~ (TILDETILDE) COMMANDS:
~~Ln - Digital Line Current Sensing On/Off:
This command turns on or off the digital line current sensing.
~~L0 Turn off digital line current sensing.
~~L1 Turn on digital line current sensing. (default)
Result Codes:
OK n = 0, 1.
ERROR Otherwise.
~~S=m - Digital Line Over-Current Sense Time Set:
This command sets the time in mS that the over-current condition must
exceed to cause a digital line current fault.
m = 0 -9
Default = 4
Result Codes:
OK n = 0, 1.
ERROR Otherwise.
~~S? - Display Line Over-Current Sense Time Display:
This command displays the current over-current time in mS (i.e. 004).
CELLULAR COMMANDS:
AT& Commands:
&Fn - Setup for ETC operation:
This command initiates the setup for either ETC Cellular or ETC
Central-Site Modems.
NOTE: The &F cellular command is not to be confused with the &F factory
default command in section 12.5.28.
&F5 Sets up for ETC Cellular Modem.
&F6 Sets up for ETC Central-Site Modem.
Result Codes:
OK n = 5, 6.
ERROR Otherwise.
&Ix - Select cellular transmit level:
This command sets the transmit level for cellular "-10 dBm" to
"-25 dBm".
&I10 Sets the transmit level for cellular "-10 dBm".
&I11 Sets the transmit level for cellular "-11 dBm".
&I12 Sets the transmit level for cellular "-12 dBm".
&I13 Sets the transmit level for cellular "-13 dBm".
&I14 Sets the transmit level for cellular "-14 dBm".
&I15 Sets the transmit level for cellular "-15 dBm".
&I16 Sets the transmit level for cellular "-16 dBm".
&I17 Sets the transmit level for cellular "-17 dBm".
&I18 Sets the transmit level for cellular "-18 dBm".
&I19 Sets the transmit level for cellular "-19 dBm".
&I20 Sets the transmit level for cellular "-20 dBm".
&I21 Sets the transmit level for cellular "-21 dBm".
&I22 Sets the transmit level for cellular "-22 dBm".
&I23 Sets the transmit level for cellular "-23 dBm".
&I24 Sets the transmit level for cellular "-24 dBm".
&I25 Sets the transmit level for cellular "-25 dBm".
Result Codes:
OK n = 10 thru 25.
ERROR Otherwise.
AT) Commands:
)Cn - Select cellular phone driver:
This command selects which specific cellular phone driver is to be
loaded.
)C0 Selects NO cellular or disables cellular driver.
)C1 Selects and loads the AT&T phone driver. (not supported)
)C5 Selects and loads the Nokia phone driver.
)C6 Selects and loads the Motorola phone driver.
Result Codes:
OK n = 0, 1, 5, 6.
ERROR Otherwise.
AT~ Commands:
~Zn - Cellular profile mode select:
This command selects the normal or enhanced profile mode. When in the
normal profile mode the modem responds to all the normal profile
settings. When in the enhanced mode the advanced user can set up
different Cellular and Landline profiles. The profile selected will
restored upon power up of the modem. The enhanced profile mode effects
the &Y, &W, and &V commands.
~Z0 Selects the normal profile mode. (default)
~Z1 Selects the enhanced profile mode.
Result Codes:
OK n = 0, 1
ERROR Otherwise.
S-REGISTER SUMMARY:
TABLE 34 S-REGISTER SUMMARY
Register Function Range Default Units
S0 Auto-answer Ring Count 0-255 0 rings
S1 Ring count 0-255 0 rings
S2 Escape character (User Defined) 0-255 43 ASCII
S3 Carriage return <CR> character (User Defined) 0-127 13 ASCII
S4 Line feed <LF> character (User Defined) 0-127 10 ASCII
S5 Back space <BS> character (User Defined) 0-127 8 ASCII
S6 Wait before dialing 2-255 5 S
S7 Wait for carrier 1-255 60 S
S8 Pause time for command or dial modifier 0-255 2 S
S9 Carrier Validation time 1-255 6 0.1 S
S10 Lost carrier delay 1-255 14 0.1 S
S11 DTMF duration and Interdigit delay 50-255 95 0.001 S
S12 Guard Time 0-255 50 0.02 S
S13 Reserved - - -
S14 Bit Mapped Options - 138 bits
S15 Reserved - - -
S16 Bit Mapped Option Status - 0 bits
S17 Reserved - - -
S18 Modem Test Timer 0-255 0 S
S19 AutoSync Protocol Support Mode - 26 bits
S20 AutoSync HDLC Address - 255 ASCII
S21 Bit Mapped Options - 112 bits
S22 Bit Mapped Options - 118 bits
S23 Bit Mapped Options - 17 bits
S24 Reserved - - -
S25 DTR Debounce Time 0-255 5 0.05 S
S26 RTS to CTS Delay Interval 0-255 1 0.01 S
S27 Bit Mapped Options - 64 bits
S28 V34/V.32 Option Status 0-1 1 *
S30 Inactivity Timer Value 0-90 0 min
S33 Power Down Level Request 0,9 0 -
S37 Desired DCE Speed - 17 -
S40 Bit Mapped Option Status - 77 bits
S41 Connect Message Display - 1 -
S42 V.32 Retrain Operation (&Bn) - 1 -
S43 Auto Fallback Character for MNP Negotiation 0-127 13 ASCII
S44 Bit Mapped Option Status - 23 bits
S46 Automatic Sleep Timer 0-255 100 .1 S
S47 Forced Sleep Timer with Powerdown Mode in PCMCIA 0-255 100 .1 S
S48 Set Auto-reliable Buffer (\Cn) - 0 -
S49 Set Maximum Block Size - 255 -
S50 FAX/Data Mode Selection - 0 -
S51 Data/FAX DTE Flow Control Selection - 3 bits
S52 Break Control Option 0-5 5 -
S53 Modem Operating Mode (\Nn) - 7 -
S54 Bit Mapped Option Status - 192 bits
S57 V.42bis Dictionary Size (See AT"N) - 2 -
S58 BTLZ String Length 6-64 32 bytes
S59 Bit Mapped MNP Options - 1 bits
S62 DTE Rate Status - 17 -
S65 Round Trip Delay - 1 .1S
S67 Cellular Transmit Level 0-25 16 -dBm
S72 DTE Speed Select During Data Transfer - 0 -
S79 Select Initial Connect Rate in CELL (ETC) Mode 0-2 2 -
S-REGISTER DEFINITIONS:
S0 - Auto-Answer Ring Count:
Sets the number of the rings required before the modem automatically
answers a call. Setting this register to zero disables auto-answer
mode.
Range: 0-255 rings
Default: 0
Units: rings
S1 - Ring Count:
The value of S1 is incremented with each ring. If no rings occur over
an 8 second interval, this register is cleared.
Range: 0-255 rings
Default: 0
Units: rings
S2 - Escape Character (User Defined):
S2 holds the decimal value of the ASCII character used as the escape
character. The default value corresponds to an ASCII "+". A value
over 127 disables the escape process, i.e., no escape character will be
recognized.
Range: 0-255, ASCII decimal
Default: 43 (+)
Units: ASCII
S3 - Carriage Return <CR> Character (User Defined):
Sets the command line and result code terminator character. Pertains to
asynchronous operation only.
Range: 0-127, ASCII decimal
Default: 13 (Carriage Return)
Units: ASCII
S4 - Line Feed <LF> Character (User Defined):
Sets the character recognized as a line feed. Pertains to asynchronous
operation only. The Line Feed control character is output after the
Carriage Return control character if verbose result codes are used.
Range: 0-127, ASCII decimal
Default: 10 (Line Feed)
Units: ASCII
S5 - Backspace <BS> Character (User Defined):
Sets the character recognized as a backspace. Pertains to asynchronous
operation only. The modem will not recognize the Backspace character if
it is set to a value that is greater than 32 ASCII. This character can
be used to edit a command line. When the echo command is enabled, the
modem echoes back to the local DTE the Backspace character, an ASCII
space character and a second Backspace character; this means a total of
three characters are transmitted each time the modem processes the
Backspace character.
Range: 0-127, ASCII decimal
Default: 8 (Backspace)
Units: ASCII
S6 - Wait Before Dialing:
Sets the length of time, in seconds, that the modem will wait (pause)
after going off-hook before dialing the first digit of the telephone
number. The modem always pauses for a minimum of 2 seconds, even if the
value of S6 is less than 2 seconds. The wait for dial tone call
progress feature ("W" dial modifier in the dial string) uses the value
in register S6. This operation, however, may be affected by some ATX
options according to country restrictions. If no dialtone is detected
in the time defined, "NO DIALTONE" is returned.
Range: 2-255 seconds
Default: 5
Units: seconds
S7 - Wait For Carrier:
Sets the length of time, in seconds, that the modem will wait for
carrier before hanging up. The timer is started when the modem finishes
dialing (originate), or goes off-hook (answer). In originate mode, the
timer is reset upon detection of answer tone if allowed by country
restrictions. The timer also specifies the wait for silence time for
the @ dial modifier in seconds. S7 is not associated with the "W" dial
modifier.
Range: 1-255 seconds
Default: 060
Units: seconds
S8 - Pause Time For Command or Dial Modifier:
Sets the time, in seconds, that the modem must pause when the "," dial
modifier is encountered in the dial string.
Range: 0-255 seconds
Default: 2
Units: seconds
S9 - Carrier Validation Time:
NOTE: S9 is not currently implemented.
S10 - Lost Carrier Delay:
NOTE: The S10 delay time is only effectual for connections with V.22bis
or lower rates.
Sets the length of time, in tenths of a second, that the modem waits
before hanging up after a loss of carrier. This allows for a temporary
carrier loss without causing the local modem to disconnect. When
register S10 is set to 255, the modem functions as if a carrier is
always present.
The actual interval the modem waits before disconnecting is the value in
register S10 minus the value in register S9. Therefore, the S10 value
must be greater than the S9 value or else the modem disconnects before
it recognizes the carrier.
Range: 1-255 tenths of a Second
Default: 14 (1.4 Seconds)
Units: 0.1 S
S11 - DTMF Duration and Interdigit Delay:
Range: 50-255 thousandths of a Second
Default: 95 (0.095 Seconds)
Units: 0.001 S
S12 - Guard Time:
Defines the maximum period, in 2-hundredths of a second, allowed between
consecutive asynchronous escape characters (+) for the escape sequence
to be considered valid.
Range: 0-255 1/50 of a second
Default: 050 (1 seconds)
Units: 0.02 S
S13 - Reserved:
S14 - Bit Mapped Options:
Indicates the status of command options.
Default: 10 (8Ah) (138d) (10001010b)
Bit 0 - Reserved.
Bit 1 - Command echo (En)
0 = E0 Echo off
1 = E1 Echo on
Bit 2 - Response (Qn)
0 = Q0 on
1 = Q1 off
Bit 3 - Result codes (Vn)
0 = V0 is selected
1 = V1 is selected
Bit 4 - Dumb Mode
0 = V0 is selected
1 = V1 is selected
Bit 5 - Tone/Pulse Dialing
0 = T tone
1 = P pulse
Bit 6 - Reserved
Bit 7 - Originate/Answer
0 = Answer
1 = Originate
S15 - Reserved:
S16 - Bit Mapped Option Status:
Indicates the test in progress status.
Default: 0
Bit 0 - Local analog loopback
0 = Local ALB disabled
1 = Local ALB enabled (&T1)
Bit 1 - Reserved
Bit 2 - Local digital loopback
0 = Local DL disabled
1 = Local DL enabled (&T3)
Bit 3 - Remote digital loopback (RDL) status
0 = RDL off
1 = RDL in progress
Bit 4 - RDL requested
0 = RDL not active
1 = RDL active (&T6)
Bit 5 - RDL with self test
0 = RDL w/self-test disabled
1 = RDL w/self-test enabled (&T7)
Bit 6 - Local analog loopback (ALB) with self test
0 = ALB w/self-test disabled
1 = ALB w/self-test enabled (&T8)
Bit 7 - Reserved
S17 - Reserved:
S18 - Modem Test Timer:
Sets the length of time, in seconds, that the modem conducts a test
(commanded by &Tn) before returning to the command mode. If this
register value is zero, the test will not automatically terminate; the
test must be terminated from the command mode by issuing an &T0 or "H"
command.
Range: 0-255 seconds
Default: 0
S19 - AutoSync Protocol Support Mode:
Indicates AutoSync Protocol Support Mode status.
Default: 026
Bit 0 - Reserved
Bit 1 -
0 = Bi-sync protocol
1 = HDLC protocol
Bit 2 -
0 = Address detector disabled
1 = Address detector enabled
Bit 3 -
0 = NRZI bit coding
1 = NRZ bit coding
Bit 4 -
0 = Selects MARK idle
1 = Selects FLAG idle
Bits 5-7 - Reserved
S20 - AutoSync HDLC Address:
When in HDLC mode indicates HDLC address. When in BiSync mode indicates
definition of BiSync sync character.
Default: 255
In HDLC mode: HDLC address.
In Bisync mode: definition of Bisync sync character.
S21 - Bit Mapped Options
Indicates the status of command options.
Default: (70h) (112d) (01110000b)
Bit 0 - Reserved.
Bit 1 - Reserved
Bit 2 - CTS behavior (&Rn)
1 = &R0 CTS follows RTS
0 = &R1 CTS is always on
Bit 3,4 - DTR behavior (&Dn)
00 = &D0 ignore
01 = &D1 return to command mode
10 = &D2 disconnect
11 = &D3 reset modem
Bit 5 - RLSD (DCD) behavior (&Cn)
0 = &C0 DCD is always on
1 = &C1 is on after connect
Bit 6 - DSR behavior (&Sn)
0 = &S0 DSR is always on
1 = &S1 is on after connect
Bit 7 - Reserved
S22 - Bit Mapped Options:
Indicates the status of command options.
Default: (76h) (118d) (01110110b)
Bit 1,0 - Speaker volume (Ln)
0 0 = L0 is selected
0 1 = L1 is selected
1 0 = L2 is selected
1 1 = L3 is selected
Bit 3,2 - Speaker control (Mn)
0 0 = M0 is selected
0 1 = M1 is selected
1 0 = M2 is selected
1 1 = M3 is selected
Bit 6,5,4 - Result codes and call progress (Xn)
0 0 0 = X0 is selected
0 0 1 = Reserved
0 1 0 = Reserved
0 1 1 = Reserved
1 0 0 = X1 is selected
1 0 1 = X2 is selected
1 1 0 = X3 is selected
1 1 1 = X4 is selected
Bit 7- Make/break pulse ratio (&Pn)
0 = &P0 is selected
1 = &P1 is selected
S23 - Bit Mapped Options:
Indicates the status of command options.
Default: (11h) (17d) (00010001b)
Bit 0- Grant RDL
0 = &T5 is selected
1 = &T4 is selected
Bit 3,2,1 - Reserved
Bit 5,4 - Word length
0 0 = Even parity
0 1 = Space parity
1 0 = Odd parity
1 1 = Mark parity
Bit 7,6 - Guard tone (&Gn)
0 0 = disabled
0 1 = 550 Hz
1 0 = 1800 Hz
1 1 = Reserved
S24 - Reserved:
S25 - DTR Debounce Time:
Sets the length of time that the modem will ignore DTR for before
hanging up. Its units are seconds for synchronous mode 1 and one
hundredths of a second for other modes.
Range: 0-255 (1 second for synchronous mode 1; 0.01 S Otherwise)
Default: 005
Units: 0.05 S
S26 - RTS to CTS Delay Interval:
NOTE: S26 is not currently implemented.
S27 - Bit Mapped Option:
Indicates the status of command options.
Default: (40h) (064d) (01000000b)
Bit 3, 1, 0 - Synchronous/asynchronous selection (&Qn, &Mn)
000 &Q0, &M0 is selected
001 &Q1, &M1 is selected
010 &Q2, &M2 is selected
011 &Q3, &M3 is selected
100 &Q4, &M4 is selected
Bit 2 - Leased line control (&Ln)
0 &L0 is selected
1 &L1 is selected
Bit 5,4 - Sync Transmit Clock Select (&Xn)
00 &X0 internal clock
01 &X1 external clock
10 &X2 TX slave to RX clock
Bit 6 - ITU-T/Bell mode select (Bn)
0 B0 is selected
1 B1 is selected
Bit 7 - Reserved
S28 - V34/V.32 Option Status:
If 0, attempt V32, drop if not successful. If 1, attempt V.34,
fallback to V32.
Range: 0-1
Default: 1
S30 - Inactivity Timer Value:
Range: 0-90
Default: 000
Units: Minutes
S33 - Power Down Level Request:
Used to request a powerdown level. If 0, powerdown disabled. If 9,
powerdown enabled.
Range: 0,9
Default: 0
S37 - Desired DCE Speed:
Default = 17
0 = Attempt to connect at the last AT speed.
3 = Attempt a 300 bps connection.
5 = Attempt a 1200 bps connection.
6 = Attempt a 2400 bps connection.
7 = Attempt a 4800 bps connection.
8 = Attempt a 7200 bps connection.
9 = Attempt a 9600 bps connection.
10 = Attempt a 12000 bps connection.
11 = Attempt a 14400 bps connection.
12 = Attempt a 16800 bps connection.
13 = Attempt a 19200 bps connection.
14 = Attempt a 21600 bps connection.
15 = Attempt a 24000 bps connection.
16 = Attempt a 26400 bps connection.
17 = Attempt a 28800 bps connection.
S40 - Bit Mapped Option Status:
Indicates the status of command options.
Default: 077
Bit 0 - Automode select (Nn)
0 = N0 disabled
1 = N1 enabled
Bit 1-5 - Reserved
Bit 6 - V.42 detection phase (-Jn)
0 = -J0 disabled
1 = -J1 enabled
Bit 7 - Reserved
S41 - Connect Message Display:
Default = 001
0 = CONNECT with DTE speed
1 = CONNECT with carrier, protocol and compression
2 = CONNECT with DCE speed
S42 - V.32 Retrain Operation (&Bn):
Default = 001
0 = &B0 is selected
1 = &B1 is selected
2 = &B2 is selected
S43 - Auto Fallback Character for MNP Negotiation:
Default = 013
0 disabled
1-127 enabled
S44 - Bit Mapped Option Status:
Indicates the status of command options.
Default = 023
Bit 0 - V.42bis status
0 disabled
1 enabled
Bit 2 - V.42bis selection ("Hn)
00 "H0 is selected
01 "H1 is selected
10 "H2 is selected
11 "H3 selected
Bit 3 - Reserved
Bit 4 - Auto fallback/fallforward selection (%Gn)
0 %G0 is selected
1 %G1 is selected
Bit 5-7 - Reserved
S46 - Automatic Sleep Timer:
Bit 0-255 Sleep delay - unit = 100 mS
Specifies the time the controller waits before going to sleep. The data
pump is not affected.
0-255 = 0-25.4 S
Default Value = 100 (10 S)
S47 - Forced Sleep Timer with Powerdown Mode in PCMCIA:
Bit 0-255 Sleep Delay - Unit = 100 mS
Specifies the time the controller waits before going to sleep. The data
pump is not affected.
0-255 = 0-25.4 S
Default Value = 100 (10 S)
S48 - Set Autoreliable Buffer (\Cn):
Default = 000
0 \C0 is selected
1 \C1 is selected
2 \C2 is selected
S49 - Set Maximum Block Size:
Default =255
31 = 32 bytes = \A4
63 = 64 bytes = \A0
127 = 128 bytes = \A1
191 = 192 bytes = \A2
255 = 256 bytes = \A3
S50 - FAX/Data Mode Selection:
Default = 000
0 Data Mode
1 FAX Mode
S51 - Data/FAX DTE Flow Control Selection:
Default = 003
Bit 0-2 (&Kn, \Qn)
000 &K0, \Q0 are selected
001 &K4, \Q1 are selected
010 \Q2 are selected
011 &K3 \Q3 are selected
Bit 3 Reserved
Bit 4 XON/XOFF Flow Control (\Gn)
0 \G0 is selected
1 \G1 is selected
Bit 5 DTE/DCE Rate (\Jn)
0 \J0 is selected
1 \J1 is selected
Bit 6,7 XON/XOFF pass-through control (\Xn)
00 \X0 is selected
01 \X1 is selected
S52 - Break Control Option:
Reflects the \Kn value
Range: 0-5
Default: 5
S53 - Modem Operating Mode (\Nn):
Default = 007
0 \N0 is selected
1 \N1 is selected
2 \N2 is selected
7 \N3 is selected
6 \N4 is selected
4 \N5 is selected
S54 - Bit Mapped Option Status:
Indicates the status of command options.
Default = 192
0 B2 is selected
1 B3 is selected
2-6 Reserved
7
0 \V0 is selected
1 \V1 is selected
S57 - V.42bis Dictionary Size (See AT"N):
Default = 002
Range: 0-2
0 512 bytes
1 1024 bytes
2 1536 bytes
S58 - BTLZ String Length:
Default = 032
Range = 6-64 bytes
S59 - Bit Mapped MNP Options:
Default = 001
Bit 0 MNP5 Status (%Cn)
0 %C0 is selected
1 %C1 is selected
S62 - DTE Rate Status:
Default = 017
0 300 bps
1 600 bps
2 1200 bps
3 2400 bps
4 4800 bps
5 7200 bps
6 9600 bps
7 12200 bps
8 14400 bps
9 16800 bps
10 19200 bps
11 21600 bps
12 24000 bps
13 26400 bps
14 28800 bps
15 38400 bps
16 57600 bps
17 115200 bps
S65 - Round Trip Delay:
Units: 100 mS
S67 - Cellular Transmit Level:
Sets the Cellular transmit level.
Range: 0-25 (-dBm)
Default: 16
S72 - DTE Speed Select During Data Transfer:
Default = 000
0 last autobaud speed
1 300 bps
2 600 bps
3 1200 bps
4 2400 bps
5 4800 bps
6 7200 bps
7 9600 bps
8 12000 bps
9 14400 bps
10 16800 bps
11 19200 bps
12 21600 bps
13 24000 bps
14 26400 bps
15 28800 bps
16 38400 bps
17 57600 bps
18 115200 bps
S79 - Select Initial Connect Rate in CELL (ETC) Mode:
This register is used in the ETC CELL mode to select the connect rate.
If dialing into a CELL capable modem, use the value of 2. If dialing
into a non-CELL modem, use the value of 1. This register is ignored
if not making a CELL call.
Default = 002
Range: 0-2
0 Startup at Highest rate
1 Startup at 4800 rate
2 Startup at 9600 rate
FAX COMMANDS:
FAX Class 1 Commands:
+FCLASS? - Select Service Indication:
This command causes the modem to display the current setting. The modem can operate either as a Class 0 data modem or a Class 1 FAX modem. Modem transmits "CR LF 0" or "1 CR LF" to DTE with ATV format for OK.
+FCLASS? 000 if in data mode; 001 if in FAX Class 1
+FCLASS=? - Select Service Capabilities:
The command causes the modem to display the classes it supports. Modem
sends "CR LF 0, 1 CR LF" to DTE with ATV format for OK.
+FCLASS=? 0: modem is set up for data mode; 0,1: Modem is capable of data
and FAX Class 1 services.
+FCLASS=n - Select Service Class:
This command sets the modem for Class "n" operation, where "n" is either
a 0 or 1.
+FCLASS=0 Select Data Mode
+FCLASS=1 Select Facsimile Class 1
+FTS=? - FTS Range Capabilities:
Modem sends "CR LF 0-255 CR LF" to DTE with ATV format for OK.
+FTS=n - Transmission Silence:
This command causes the modem to stop transmitting data and pause for
10*n mS. Modem sends OK after timer has expired.
n=0-255; 10 mS intervals
+FRS=? - FRS Range Capabilities:
Modem sends "CR LF 0-255 CR LF" to DTE with ATV format for OK.
+FRS=n - Receive Silence:
This command causes the modem to stop transmitting data and wait
10*n mS for silence; then the timer is reloaded.
n=0-255; 10 mS intervals
+FTM=<m> - Transmit FAX Data with <m> Carrier:
+FRM=<m> - Receive FAX Data with <m> Carrier:
+FTH=<m> - Transmit HDLC Data with <m> Carrier:
The +FTH=<m> command causes the modem to transmit data using HDLC
protocol and the modulation defined below. An ERROR response code
results if this command is issued while the modem is on-hook.
(See Table 34 for the values of "m".)
+FRH=<m> - Receive HDLC Data with <m> Carrier:
The +FRH=<m> command causes the modem to receive frames using HDLC
protocol and the modulation defined below. An ERROR response code
results if this command is issued while the modem is on-hook.
+FTM=? - FAX Normal Mode Transmit Capabilities:
This command causes the modem to output the transmit modulations
supported by the modem. The following table shows the values that can
be entered for this command and the meaning of those values.
Command Option Modulation Speed Bits/S
+FTM=3 V.21 CH. 2 300
+FTM=24 V.27ter 2400
+FTM=48 V.27ter 4800
+FTM=72 V.29 7200
+FTM=73 V.17 LT 7200
+FTM=74 V.17 ST 7200
+FTM=92 V.17terbo 192 LT 19200
+FTM=93 V.17terbo 192 ST 19200
+FTM=96 V.29 9600
+FTM=97 V.17 LT 9600
+FTM=98 V.17 ST 9600
+FTM=121 V.17 LT 12000
+FTM=122 V.17 ST 12000
+FTM=145 V.17 LT 14400
+FTM=146 V.17 ST 14400
+FTM=N - Modem Initiate Training:
This command causes the modem to initiate training with "n" type
modulation. Reference the table above.
Send CONNECT or 1 to DTE after training.
+FRM=? - FAX Normal Mode Receive Capabilities:
This command causes the modem to output the receive modulations
supported by the modem.
+FRM=n - Modem Accept Training:
This command causes the modem to accept training with "n" type
modulation and the protocol is normal mode.
Send CONNECT or 1 to DTE after carrier is detected.
+FTH=? - FAX SDLC Mode Transmit Capabilities:
This command causes the modem to output the FAX SDLC transmit
capabilities supported by +FTM=?.
Command Option Modulation Speed Bits/S
+FTM=3 V.21 CH. 2 300
+FTM=24 V.27ter 2400
+FTM=48 V.27ter 4800
+FTM=72 V.29 7200
+FTM=73 V.17 LT 7200
+FTM=74 V.17 ST 7200
+FTM=92 V.17terbo 192 LT 19200
+FTM=93 V.17terbo 192 ST 19200
+FTM=96 V.29 9600
+FTM=97 V.17 LT 9600
+FTM=98 V.17 ST 9600
+FTM=121 V.17 LT 12000
+FTM=122 V.17 ST 12000
+FTM=145 V.17 LT 14400
+FTM=146 V.17 ST 14400
+FTH=n - Modem Initiate Training (SDLC):
This command causes the modem to initiate training with "n" type
modulation, and the protocol is SDLC mode.
Send CONNECT or 1 to DTE after training.
+FRH=? - FAX SDLC Receive Capabilities:
This command causes the modem to output the FAX SDLC receive
capabilities supported by +FTM=?.
Command Option Modulation Speed Bits/S
+FTM=3 V.21 CH. 2 300
+FTM=24 V.27ter 2400
+FTM=48 V.27ter 4800
+FTM=72 V.29 7200
+FTM=73 V.17 LT 7200
+FTM=74 V.17 ST 7200
+FTM=92 V.17terbo 192 LT 19200
+FTM=93 V.17terbo 192 ST 19200
+FTM=96 V.29 9600
+FTM=97 V.17 LT 9600
+FTM=98 V.17 ST 9600
+FTM=121 V.17 LT 12000
+FTM=122 V.17 ST 12000
+FTM=145 V.17 LT 14400
+FTM=146 V.17 ST 14400
+FRH=n - Modem Accept Training (SDLC):
This command causes the modem to accept training with "n" type
modulation, and the protocol is SDLC mode.
Send CONNECT or 1 to DTE after carrier is detected.
FAX Class 2 Commands:
+FCLASS=n - Select Service Class:
The +FCLASS=n command sets the active service class.
+FCLASS=0 Select Data Mode (default)
+FCLASS=1 Select Facsimile Class 1
+FCLASS=2 Select Facsimile Class 2
+FAA - FAX Auto Answer Enable:
Command Syntax: +FAA=<value>
0: Answer as FAX modem of type specified by +FCLASS.
1: Automatically determine whether to answer as FAX or data
modem.
+FAXERR - T.30 Session Error Report:
Command Syntax: +FAXERR
Response Syntax: +FAXERR=<value>
0-9 Call placement and termination.
0: Normal and proper end of connection.
1: Ring detected without successful handshake.
2: Call aborted from +FK or <CAN>.
10-19 Transmit Phase B hang-up codes.
20: Unspecified transmit Phase B error.
23: COMREC invalid command received.
25: DCS sent 3 times without response.
27: Failure to train.
40-49 Transmit Phase C hang-up codes.
40: Unspecified transmit Phase C error.
50-69 Transmit Phase D hang-up codes.
52: No response to MPS repeated 3 times.
53: Invalid response to MPS.
54: No response to EOP repeated 3 times.
55: Invalid response to EOP.
56: No response to EOM repeated 3 times.
57: Invalid response to EOM.
70-89 Receive Phase B hang-up codes.
90-99 Receive Phase C hang-up codes.
90: Unspecified receive Phase C error.
100-119 Receive Phase D hang-up codes.
100: Unspecified receive Phase D error.
120-255 Reserved codes.
+FBOR - Data Bit Order Selection:
This parameter controls the mapping between PSTN facsimile data and the
DTE-DCE link. This command controls Phase C data transferred during
execution of +FDT or +FDR commands.
Command Syntax: +FBOR=<value>
0: Direct bit order for both Phase C data and for Phase B/D data.
1: Reversed bit order for Phase C data and direct bit order for Phase B/D data.
2: Direct bit order for Phase C data and reversed bit order for Phase B/D data.
3: Reverse bit order for both Phase C data and for Phase B/D data.
NOTE:
Direct bit order:
First bit transferred of each byte on the DTE-DCE link is the
first bit transferred in the PSTN data carrier.
Reversed bit order:
Last bit transferred of each byte on the DTE-DCE link is the first
bit transferred on the PSTN data carrier.
+FCQ - Copy Quality Checking:
This parameter controls Copy Quality checking by a receiving facsimile
DCE. The DCE returns +FCQ=0 which indicates the DCE does no quality
checking. The DCE will generate Copy Quality OK (MCF) responses to
complete pages, and set +FPTS=1.
Command Syntax: +FCQ=<value>
0: Disables copy quality checking. The modem will generate Copy Quality OK (MCF) responses to complete pages and set +FPTS=1.
+FCR - Capability to Receive:
+FCR indicates whether the DCE will receive message data. This can be
used when the DTE has insufficient storage. The DCE can send and can be
polled for a file.
Command Syntax: +FCR=<value>.
0: Indicates the modem will not receive message data.
1: Indicates the modem can receive message data.
+FCTCRTY - ECM Retry Count:
Command Syntax: +FCTCRTY=<value>.
0: Disable error correcting mode retries. Error correcting mode is not supported.
+FDCC - FAX Capability Parameters:
+FDCC allows the DTE to sense and constrain the capabilities of the
facsimile DCE. When +FDCC is modified by the DTE, the DCE copies +FDCC
into +FDIS.
Command Syntax: +FDCC=VR,RB,WD,LN,DF,EC,BF,ST
Response Syntax: VR,BR,WD,LN,DF,EC,BF,ST
Valid Values:
VR: Vertical Resolution.
0: Normal, 98 lpi
1: Fine, 196 lpi
BR: Bit Rate
0: 2400 bps V.27ter
1: 4800 bps V.27ter
2: 7200 bps V.29 or V.17
3: 9600 bps V.29 or V.17
4: 12000 bps V.33 or V.17
5: 14400 bps V.33 or V.17
WD: Page Width.
0: 1728 pixels in 215 mm
LN: Page Length.
0: A4, 297 mm
2: Unlimited length
DF: Data Compression Format.
0: 1-D Modified Huffman
EC: Error Correction
0: Disable ECM
BF: Binary File Transfer
0: Disable BFT
ST: Scan Time/Line.
VR = Normal VR = Fine
0: 0 mS 0 mS
1: 5 mS 5 mS
2: 10 mS 10 mS
3: 10 mS 10 mS
4: 20 mS 20 mS
5: 20 mS 20 mS
6: 40 mS 40 mS
7: 40 mS 40 mS
+FDCS - Current Session Results:
+FDCS reports the negotiated parameters. This message may be generated
in the execution of +FDT or +FDR commands before the CONNECT result code
if new DCS frames are generated or received.
Command Syntax: +FDCS?
Response Syntax: VR,BR,WD,LN,DF,EC,BF,ST
Valid Values:
VR: Vertical Resolution.
0: Normal, 98 lpi
1: Fine, 196 lpi
BR: Bit Rate.
0: 2400 bps V.27ter
1: 4800 bps V.27ter
2: 7200 bps V.29 or V.17
3: 9600 bps V.29 or V.17
4: 12000 bps V.33 or V.17
5: 14400 bps V.33 or V.17
WD: Page Width.
0: 1728 pixels in 215 mm
Ln: Page Length.
0: A4, 297 mm
2: Unlimited length
DF: Data Compression Format.
0: 1-D modified Huffman
EC: Error Correction.
0: Disable ECM
BF: Binary File Transfer.
0: Disable BFT
ST: Scan Time/Line.
VR = Normal VR = Fine
0: 0 mS 0 mS
1: 5 mS 5 mS
2: 10 mS 5 mS
3: 10 mS 10 mS
4: 20 mS 10 mS
5: 20 mS 20 mS
6: 40 mS 20 mS
7: 40 mS 40 mS
The modem will return the negotiated T.30 parameters for the current
session.
+FDFFC - Data Compression Format Conversion:
Command Syntax: +FDFFC=<value>.
0: Disable mismatch checking. The DTE must check the +FDCS:DF subparameter, and transfer matching data.
+FDIS - Current Session Parameters:
The +FDCC parameter allows the DTE to sense and constrain the
capabilities used for the current session. The DCE uses +FDIS to
generate DIS or DTC messages directly, and uses +FDIS and received DIS
messages to generate DCS messages. The DCE utilizes the +FDIS parameter
from the +FDCC parameter on initialization, when +FDCC is written, and
at the end of a session.
Current Session Results
Command Syntax: +FDIS=VR,RB,WD,LN,DF,EC,BF,ST
Response Syntax: VR,BR,WD,LN,DF,EC,BF,ST
Valid Values:
VR: Vertical Resolution.
0: Normal, 98 lpi
1: Fine, 196 lpi
BR: Bit Rate.
0: 2400 bps V.27ter
1: 4800 bps V.27ter
2: 7200 bps V.29 or V.17
3: 9600 bps V.29 or V.17
4: 12000 bps V.33 or V.17
5: 14400 bps V.33 or V.17
WD: Page Width.
0: 1728 pixels in 215 mm
Ln: Page Length.
0: A4, 297 mm
2: Unlimited length
DF: Data Compression Format.
0: 1-D modified Huffman
EC: Error Correction.
0: Disable ECM
BF: Binary File Transfer.
0: Disable BFT
ST: Scan Time/Line.
VR = Normal VR = Fine
0: 0 mS 0 mS
1: 5 mS 5 mS
2: 10 mS 5 mS
3: 10 mS 10 mS
4: 20 mS 10 mS
5: 20 mS 20 mS
6: 40 mS 20 mS
7: 40 mS 40 mS
+FDR - Begin or Continue Phase C Receive Data:
The +FDT command initiates transition to Phase C data reception. This
can occur after answering, dialing, a document is received, or a page is
received.
Command Syntax: +FDR
This command will initiate a transition to Phase C data reception.
+FDT - Begin Phase C Data Transmission:
The +FDT command prefixes Phase C data transmission. When the DCE is
ready to accept Phase C data, it issues the negotiation responses and
the CONNECT result code to the DTE.
Command Syntax: +FDT
This command prefixes Phase C data transmission.
+FECM - Error Correction Mode Control:
Command Syntax: +FECM=<value>.
0: Error correcting mode disabled.
+FET - Transmit Page Punctuation:
This command is used to punctuate page and document transmission after
one or more +FDT commands.
Command Syntax: +FET=<ppm>
0: [PPS-]MPS Another page next, same document.
1: [PPS-]EOM Another document next.
2: [PPS-]EOP No more pages or document.
3: PPS-NULL Another partial page next.
4: [PPS-]PRI-MPS Another page, procedure interrupt.
5: [PPS-]PRI-EOM Another document, procedure interrupt.
6: [PPS-]PRI-EOP All done, procedure interrupt.
7: CTC Continue to correct.
+FK - Session Termination:
The +FK command causes the DCE to terminate the session in an orderly
manner. In particular, the DCE will send a DCN message at the next
opportunity and hang-up.
Command Syntax: +FK
This command causes the modem to terminate the session in an orderly
manner.
+FLID - Local ID String:
If +FLID is not a null string, it generates a frame which may include
the digits 0-9, "+", and spaces.
Command Syntax: +flid="<local ID string>"
Valid Value: ASCII string can be up to 20 characters.
Response Syntax: +FLID=?
Return Value: (20) (32-127).
+FLNFC - Page Length Format Conversion:
Command Syntax: +FLNFC=<value>.
0: Disables mismatch checking. The DTE must check the +FDCS:LN subparameter, and transfer matching data.
+FLPL - Indicate Document to Poll:
Command Syntax: +FLPL=<value>.
0: Indicates that the DTE has no document to poll.
+FMDL - Request Model Identification:
Command Syntax: +FMDL?.
Response Value: The information text cannot exceed 2048 characters. This command causes the modem to send one or more lines of information text which is used to identify the product.
+FMFR - Manufacturer Identification:
Command Syntax: +FMFR.
Response Value: The information text cannot exceed 2048 characters. This command causes the modem to send one or more lines of information text which is used to identify the Manufacturer.
+FREV - Request Product Revision Identification:
Command Syntax: +FREV?.
Response Value: The information text cannot exceed 2048 characters. This command causes the modem to send one or more lines of information text which is used to identify the version, revision level or data, or other pertinent information.
+FPHCTO - DTE Phase C Response Time-Out:
The +FPHCTO command determines how long the DCE will wait for a command
after reaching the end of data when transmitting in Phase C. When this
time-out is reached, the DCE assumes there is no more pages and no
documents to send. It then sends the appropriate response to the
remote device.
Command Syntax: +FPHCTO=<value>
Value = 0-255 (100 mS units)
Default: 30
This value determines how long the modem will wait for a command after
reaching the end of data when transmitting in Phase C.
+FPTS - Page Transfer Status
The +FPTS response reports a number representing the copy quality and
related post-page message responses received from the remote DCE. The
+FPTS: response is generated in execution of a +FET command.
Command Syntax: +FPTS=<ppr>
1: MCF Page good.
2: RTN Page good; retrain requested.
3: RTP Page good; retrain requested.
+FRBC - Phase C Receive Data Block Size:
Command Syntax: +FRBC=<value>.
0: Stream mode, Phase C data is terminated by <DLE><ETX>.
+FREL - Phase C Received EOL Alignment:
Command Syntax: +FREL=<value>.
0: Indicates that EOL patterns are aligned as received.
+FSPL - Request to Poll:
Command Syntax: +FSPL=<value>.
0: Indicates that the DTE does not want to poll.
+FTBC - Phase C Transmit Data Block Size:
Command Syntax: +FTBC=<value>.
0: Stream mode, Phase C data is terminated by <DLE><ETX>.
FAX Class 2 Responses:
+FCFR - Indicate Confirmation to Receive:
The DCE sends a +FCFR response to the DTE upon reception of an
acceptable TCF training burst and a valid DCS signal from the remote
machine. This indicates that the DCE will receive Phase C data after
the remote station receives the local DCE's CFR message. The +FCFR
message is generated in execution of a +FDR command.
Syntax: +FCFR
Usage: Indicates the reception of an acceptable TCF training burst and valid DCS signal from the remote machine.
+FCON - Facsimile Connection Response:
+FCON indicates connection with a fax machine. It is released by
detection of HDLC flags in the first received frame. +FCON is generated
in response to an Originate or Answer command.
Syntax: +FCON
Usage: Indicates connection with a FAX machine. Generated in responses to an originate command or answer command.
+FCSI - Reports the Remote ID:
This response reports the received called station ID string, if any.
This message is generated in execution of Originate, Answer, +FDT, or
+FDR commands.
Syntax: +FCSI:"<CSI ID string>"
Usage: Reports the Called Station's ID.
+FDCS - Reports DCS Frame Information:
The +FDCS parameter is loaded with the negotiated parameters for the
current session. A transmitting DCE generates DCS; A receiving DCE
gets DCS from the remote station. The DTE may read this parameter.
Syntax: +FDCS:VR,BR,WD,LN,DF,EC,FB,ST
Usage: Reports negotiated parameters for the current session. The subparameters are described in the +FDCS command description.
+FDIS - Reports DIS Frame Information:
+FDIS reports remote facsimile station capabilities and intentions.
The parameters are provided in ASCII notation. This message is
generated in execution of Originate, Answer, +FDT, or +FDR commands.
Syntax: +FDIS:VR,BR,WD,LN,DF,EC,BF,ST
Usage: Reports remote FAX capabilities and intentions. The subparameters are described in the +FDCS command description.
+FET - Post Page Message Response:
The +FET response is generated by the receiving DCE after the end of
Phase C reception on receipt of the Post-Page message from the
transmitting station. The +FET response is generated in execution of a
+FDR command.
Syntax: +FET:<ppm>
Usage: Generated by the receiving modem after the end of Phase C reception, on receipt of the post-page message from the transmitting station. The <ppm> codes are described in the +FET command description.
+FHNG - Call Termination with Status:
+FHNG indicates that the call has been terminated. The hang-up cause
is reported and stored in the +FAXERR parameter for later inspection.
Syntax: +FHNG:<hangup status code>
Usage: Indicates that the call has been terminated. The <hang-up status code> values are described in the +FAXERR command description.
+FPTS - Receive/Transmit Page Transfer Status:
The +FPTS parameter contains a value representing the post page
response, including copy quality and related end-of-page status. These
values correspond to post page response messages. The receiving DCE
sets this parameter after it receives a page of Phase C data. The
transmitting DCE sets this parameter with the status reported by the
receiving station. The DTE may inspect or modify this parameter.
Syntax: +FPTS:<ppr>
Usage: Reports a <ppr> number representing the copy quality and related post- page message. The valid <ppr> values are defined in the +FPTS command description.
+FTSI - Report the Remote ID:
This response reports the received transmit station ID string, if any.
This message is generated in execution of Originate, Answer, +FDT, or
+FDR commands.
Syntax: +FTSI:"<TSI ID string>"
Usage: Reports the transmitting station's ID.
TABLE 35 MODULATION/SPEED SELECTION
M Modulation Speed
3 V.21 ch 2 300
24 V.27ter 2400
48 V.27ter 4800
72 V.29 7200
73 V.17 7200
74 V.17 (Short train) 7200
96 V.29 9600
97 V.17 9600
98 V.17 (Short train) 9600
121 V.17 12000
122 V.17 (Short train) 12000
145 V.17 14400
146 V.17 (Short train) 14400
