File: atcmds.txt 3Com Corporation 3Com Megahertz 10/100 LAN + 56K Modem PC Card (3CCFEM556 PC Card family) AT Commands and S Register Settings ============================================================ AT Command Quick Reference -------------------------- &$ HELP, Ampersand Commands On n=0 Return Online A/ Repeat Last Command n=1 Return Online & Retrain A> Continuously Repeat Command P Pulse Dial AT Command Mode Prefix Qn n=0 Result Codes Sent A Answer Call n=1 Quiet (No Result Codes) Bn n=0 V32 Mode/CCITT Answer Seq n=2 Verbose/Quiet ON Answer n=1 Bell Answer Seq Sr=n Sets Register "r" to "n" Dn Dial a Telephone Number Sr? Query Register "r" n=0..9#*TPR,;W@!()- S$ HELP, S Registers DL Dial Last Phone Number T Tone Dial DSn Dial Stored Phone Number Vn n=0 Numeric Responses D$ HELP, Dial Commands n=1 Verbal Responses En n=0 No Command Echo Xn n=0 Basic Result Codes n=1 Echo Command Chars n=1 Extended Result Codes Fn n=0 Online Echo n=2-4 Advanced Result Codes n=1 No Online Echo Yn n=0 Next Reset to &W0 settings Hn n=0 ON Hook (Hang Up) n=1 Next Reset to &W1 settings n=1 OFF Hook n=2 Next Reset to &F0 settings In n=0 Product Code n=3 Next Reset to &F1 settings n=1 Checksum n=4 Next Reset to &F2 settings n=2 RAM Test Zn n=0 Y setting determines reset n=3 Product ID string n=1 Reset to &W0 settings n=4 Current Settings n=2 Reset to &W1 settings n=5 NVRAM Settings n=3 Reset to &F0 settings n=6 Link Diagnostics n=4 Reset to &F1 settings n=7 Product Configuration n=5 Reset to &F2 settings n=8 Blacklisting Display (International Cards) n=9 PnP Enumeration Screen +++ Escape Code n=11 Link Diagnostics $ HELP, Command Summary Ln n=0 Low Speaker Volume ~Zn n=0 Normal n=1 Low Speaker Volume n=1 Enhanced n=2 Med Speaker Volume n=3 Hi Speaker Volume Mn n=0 Speaker OFF n=1 Speaker ON Until CD n=2 Speaker Always ON n=3 Speaker OFF During Dial Dial Commands ------------- 0-9 Digits to Dial * Auxiliary Tone Dial Digit # Auxiliary Tone Dial Digit T Tone Dialing P Pulse Dialing R Call an Originate Only Modem , Pause (Wait for S8 Time) / Short Delay ; Remain in Command Mode After Dialing W Wait for 2nd Dial Tone (X2,X4) @ Wait for an Answer (X3,X4) ! Flash Switch Hook & Wait for credit card Ampersand Commands ------------------ &An n=0 Disable /ARQ Result Codes &Pn n=0 N.American Pulse Dial n=1 Enable /ARQ Result Codes n=1 UK Pulse Dial n=2 Enable /Modulation Codes &Rn n=1 Ignore RTS n=3 Enable /Extra Result Codes n=2 RX to DTE/RTS high &Bn n=0 Floating DTE Speed &Sn n=0 DSR Always ON n=1 Fixed DTE Speed n=1 Modem Controls DSR n=2 DTE Speed Fixed When ARQ &Tn n=0 End Test &Cn n=0 CD Always ON n=1 Analog Loopback (ALB) n=1 Modem Controls CD n=3 Digital Loopback (DLB) &Dn n=0 Ignore DTR n=4 Grant Remote DLB n=1 On-Line Command Mode n=5 Deny Remote DLB n=2 DTE Controls DTR n=6 Remote Digital Loopback n=3 Reset ON DTR Loss n=7 Remote DLB With Self Test &Fn n=0 Load Factory 0, HW FC n=8 ALB With Self Test n=1 Load Factory 1, HW FC &Un n=0 Variable link rate floor. n=2 Load Factory 2, SW FC n=1 Minimum link rate 300 bps n=5 Load Factory 5, ETC_CELL n=2 Minimum link rate 1200 bps n=6 Load Factory 6, ETC_LAND n=3 Minimum link rate 2400 bps &Gn n=0 No Guard Tone n=4 Minimum link rate 4800 bps n=1 550 Hz Guard Tone n=5 Minimum link rate 7200 bps n=2 1800 Hz Guard Tone n=6 Minimum link rate 9600 bps &Hn n=0 Disable TX Flow Control n=7 Minimum link rate 12000 bps n=1 CTS n=8 Minimum link rate 14400 bps n=2 Xon/Xoff n=9 Minimum link rate 16800 bps n=3 CTS and Xon/Xoff n=10 Minimum link rate 19200 bps &In n=0 Disable RX Flow Control n=11 Minimum link rate 21600 bps n=1 Xon/Xoff n=12 Minimum link rate 24000 bps n=2 Xon/Xoff Chars Filtered n=13 Minimum link rate 26400 bps n=3 HP Enq/Ack Host Mode n=14 Minimum link rate 28800 bps n=4 HP Enq/Ack Terminal Mode n=15 Minimum link rate 31200 bps n=5 Xon/Xoff for non-ARQ Mode n=16 Minimum link rate 33600 bps &Kn n=0 Disable Data Compression n=17 Minimum link rate 28000 bps n=1 Auto Data Compression n=18 Minimum link rate 29333 bps n=2 Enable Data Compression n=19 Minimum link rate 30666 bps n=3 Selective Data Compression n=20 Minimum link rate 32000 bps &Mn n=0 Normal Mode n=21 Minimum link rate 33333 bps n=4 ARQ/Normal Mode n=22 Minimum link rate 34666 bps n=5 ARQ Mode n=23 Minimum link rate 36000 bps &Nn n=0 Highest Link Speed n=24 Minimum link rate 37333 bps n=1 300 bps n=25 Minimum link rate 38666 bps n=2 1200 bps n=26 Minimum link rate 40000 bps n=3 2400 bps n=27 Minimum link rate 41333 bps n=4 4800 bps n=28 Minimum link rate 42666 bps n=5 7200 bps n=29 Minimum link rate 44000 bps n=6 9600 bps n=30 Minimum link rate 45333 bps n=7 12000 bps n=31 Minimum link rate 46666 bps n=8 14400 bps n=32 Minimum link rate 48000 bps n=9 16800 bps n=33 Minimum link rate 49333 bps n=10 19200 bps n=34 Minimum link rate 50666 bps n=11 21600 bps n=35 Minimum link rate 52000 bps n=12 24000 bps n=36 Minimum link rate 53333 bps n=13 26400 bps n=37 Minimum link rate 54666 bps n=14 28800 bps n=38 Minimum link rate 56000 bps n=15 31200 bps n=39 Minimum link rate 57333 bps n=16 33600 bps &Wn n=0 Store Configuration 0 n=17 28000 bps n=1 Store Configuration 1 n=18 29333 bps &Yn n=0 Destructive n=19 30666 bps n=1 Destructive/Expedited n=20 32000 bps n=2 Nondest./Expedited n=21 33333 bps n=3 Nondest./Unexpedited n=22 34666 bps &Zn=s Store Phone Number n=23 36000 bps &Zn? Query Phone Number n=24 37333 bps n=25 38666 bps #CID=n n=26 40000 bps n=0 Caller ID Off n=27 41333 bps n=1 Formatted Caller ID n=28 42666 bps n=2 Unformatted Caller ID n=29 44000 bps n=30 45333 bps n=31 46666 bps n=32 48000 bps n=33 49333 bps n=34 50666 bps n=35 52000 bps n=36 53333 bps n=37 54666 bps n=38 56000 bps n=39 57333 bps S Register Functions -------------------- S0 Ring to Answer ON S28 V32 Handshake Time (1/10sec) S1 Counts # of Rings S29 V.21 answer mode fallback timer S2 Escape Code Char S30 Reserved S3 Carriage Return Char S31 Reserved S4 Line Feed Char S32 Connection bit mapped operations. S5 Backspace Char 1 = V.8 Call Indicate enable S6 Wait Time/Dial Tone (sec) 2 = Enable V.8 mode S7 Wait Time/Carrier (sec) 4 = Reserved S8 Comma Time (sec) 8 = Disable V.34 modulation S9 Carrier Detect Time (1/10sec) 16 = Disable V.34+ modulation S10 Carrier Loss Time (1/10sec) 32 = Disable x2 modulation S11 Dial Tone Spacing (msec) 64 = Disable V.90 modulation S12 Escape Code Time (1/50sec) 128 = Reserved S13 Bit Mapped S33 V.34 & V.34+ Connection setup 1 = Reset ON DTR Loss bit mapped control flags. 2 = Reduced Non-ARQ TX Buffer 1 = Disable 2400 Symbol rate 4 = Set DEL=Backspace 2 = Disable 2743 Symbol rate 8 = Do DS0 ON DTR 4 = Disable 2800 Symbol rate 16 = Do DS0 ON Reset 8 = Disable 3000 Symbol rate 32 = Reserved 16 = Disable 3200 Symbol rate 64 = Disable Quick Retrains 32 = Disable 3429 Symbol rate 128 = Escape Code Hang Up 64 = Reserved S14 Reserved 128 = Disable Shaping S15 Bit Mapped S34 V.34 & V.34+ Connection setup 1 = MNP/V.42 Disabled in V.22 bit mapped control flags. 2 = MNP/V.42 Disabled in V.22bis 1 = Disable 8S-2D trellis encoding 4 = MNP/V.42 Disabled in V.32 2 = Disable 16S-4D trellis encoding 8 = Disable MNP Handshake 4 = Disable 32S-2D trellis encoding 16 = Disable MNP Level 4 8 = Disable 64S-4D trellis encoding 32 = Disable MNP Level 3 16 = Disable Non linear coding 64 = Unusual MNP-Incompatibility 32 = Disable TX level deviation 128 = Disable V.42 64 = Disable Pre-emphasis 136 = Disable V.42 Detect Phase 128 = Disable Pre-coding S16 Test Modes S35 Reserved 1 = Reserved S36 Reserved 2 = Dial Test S37 Reserved 4 = Reserved S38 Disconnect Wait Time (sec) 8 = Reserved S39 Reserved 16 = Reserved S40 Reserved 32 = Reserved S41 Distinctive Ring options 64 = Reserved 1 = Distinctive Ring Enabled 128 = Reserved 2 = Reserved S17 Reserved 4 = Reserved S18 &Tn Test Timeout (sec) 8 = Reserved S19 Inactivity Timeout (min) 16 = Reserved S20 Reserved 32 = Reserved S21 Break Length (1/100sec) 64 = Reserved S22 Xon Char 128 = Reserved S23 Xoff Char S42 Reserved S24 Reserved S25 DTR Recognition Time (1/100sec) S26 Reserved S27 Bit Mapped 1 = V21 Mode 2 = Disable TCM 4 = Disable V32 8 = Disable 2100hz 16 = Enable V23 Fallback 32 = Disable V32bis 64 = Reserved 128 = Software Compatibility Mode (%ver atcmds.txt v1.1)