Intel High-Speed Data Modem Command Reference Command Description ________ _____________________________________________________ +++ Escape sequence A Answer phone. A/ Repeat the last command line. AT Attention code. Must precede all commands except A/. B Set the 300 bps/1200 bps protocol. B,B0 CCITT V.21/V.22 protocol. B1 Bell 103/212A protocol. D Dial phone, using following modifiers: String Phone number. P Pulse. R Reverse. S=n Dial stored phone number n, where n=0-3. T Tone. W Wait for dial tone. @ Wait for quiet. , Pause. ; Resume command mode after dialing. ! Hook flash. E Local echo control. E, E0 No echo. E1 Echo. H Switch hook control. H, H0 On hook (hang up phone). H1 Off hook (pick up phone). I Return product code and status. I, I0 Return product ID. I1 Compute ROM checksum, return value. I2 Compute ROM checksum, return OK or ERROR. I3 Report ROM part number and software revision number. I4 Report modem capabilities in form meant for software applications. L Speaker volume control. L, L0 Very low volume. L1 Low volume. L2 Medium volume. L3 High volume. M Speaker on or off. M, M0 Speaker always off. M1 Speaker on until carrier detected. M2 Speaker always on. M3 Speaker off when carrier detected and during dialing. M4 Like M1, except speaker on during retrain. M5 Like M3, except speaker on during retrain. O Return to on-line mode. O, O0 Return to on-line mode. O1 Return to on-line mode and start retrain sequence. O2 Fall back, return to on-line mode. O3 Fall forward, return to on-line mode. Q Enable or disable result codes. Q, Q0 Display result codes. Q1 Don't display result codes. S Read and write S-registers. Sn Select S-register n as current register, n=0-31. Sn? Read S-register n, n=0-31. Sn=v Set S-register n to value v. V Verbal or numeric result codes. V, V0 Numeric result codes. V1 Verbal result codes. X Result codes and dialing options. X, X0 Doesn't wait for or recognize dial tone, doesn't recognize busy signal. CONNECT result codes 0-4 returned. X1 Like X0, except CONNECT result codes 0-5 and 9-20 returned. X2 Waits for dial tone before dialing, doesn't recognize busy signal. CONNECT result codes 0-6 and 9-20 returned. X3 Recognizes busy signal, doesn't wait for dial tone before dialing. CONNECT result codes 0-5, 7, and 9-20 returned. X4 Waits for dial tone, recognizes busy signal. CONNECT result codes 0-7 and 9-20 returned. X5 Same as X4, except CONNECT result codes 0-4, 6, 7 returned. Y Long space disconnect. Y, Y0 Long space disconnect disabled. Y1 Long space disconnect enabled. Z Zn Restore configuration profile n from nonvolatile RAM, n=0,1. &C Data carrier detect (DCD) options. &C,&C0 DCD always on. &C1 DCD on only when modem detects data carrier signal. &C2 DCD on when idle or on-line (UNIX compatibility mode). &D Data terminal ready (DTR) options. &D,&D0 In asynchronous mode, modem ignores DTR; in synchronous mode, modem treats &D0 like &D1. &D1 Modem switches from on-line to command mode when on-to-off DTR transition occurs. &D2 Modem switches from on-line to command mode, hangs up, and disables auto-answer when on-to-off DTR transition occurs. &D3 Modem reinitializes when on-to-off DTR transition occurs. &F Fetch factory configuration profile from ROM &G Guard tones. &G,&G0 No guard tone. &G1 550 Hz guard tone. &G2 1800 Hz guard tone. &L Leased or dialup line selection. &L, &L0 Dial-up line. &L1 Leased line. &L2 Leased line autoconnect. &M Synchronous or asynchronous mode. (Performs same function as &Q command.) &M,&M0 Asynchronous. &M1 Asynchronous in command mode; synchronous in on-line mode. &M2 When DTR goes on, modem dials number stored using &Z0 and switches to synchronous mode. &M3 Synchronous when DTR is on; command mode when DTR is off. &P Make-to-break pulse dial ratio. &P,&P0 39% make to 61% break (US and Canada). &P1 33% make to 67% break (UK and Hong Kong). &Q Synchronous or asynchronous mode. (Performs same function as &M command.) &Q,&Q0 Asynchronous. &Q1 Asynchronous in command mode; synchronous in on-line mode. &Q2 When DTR goes on, modem dials number stored using &Z0 and switches to synchronous mode. &Q3 Synchronous when DTR is on; command mode when DTR is off. &R Request to send (RTS)/Clear to send (CTS) option (only valid in synchronous mode [see &M, &Q, and \Q commands]). &R,&R0 CTS tracks RTS when modem is on line. &R1 CTS always asserted. &S Data set ready (DSR) options. &S,&S0 DSR always on (asynchronous). &S1 DSR off in command and test modes. &T Diagnostic test commands. &T,&T0 Terminate test in progress. &T1 Local analog loopback. &T3 Local digital loopback connection. &T4 Grant remote digital loopback from remote. &T5 Deny remote digital loopback from remote. &T6 Remote digital loopback. &T7 Remote digital loopback with self-test. &T8 Local analog loopback with self-test &V View active and stored configuration profiles and stored phone numbers. &W &Wn Write active configuration profile n to nonvolatile RAM, n=0,1. &X Clock source in synchronous mode. &X, &X0 Modem generates transmit clock. &X1 Local computer (or terminal) generates transmit clock. &X2 Modem derives transmit clock from receive signal. &Y Designate the stored profile to use when modem is first turned on. &Y,&Y0 Use profile 0. &Y1 Use profile 1. &Z &Zn=x Store telephone number x in location n. \A Maximum MNP block size. \A, A0 64 bytes. \A1 128 bytes. \A2 192 bytes. \A3 256 bytes. \B \Bn Send break of n hundred msec, where n=1-9. Default is n=3. \C Set Auto-reliable buffer. \C,\C0 Disabled. \C1 Buffer up to 200 data characters. If reliable character not received within three seconds, establish normal connection. \C2 Disable the auto-reliable buffer. After receiving fallback character defined by %A, establish normal connection. \G Set modem-to-modem XON/XOFF flow control. \G,\G0 Disable XON/XOFF. \G1 Enable XON/XOFF. \J Set serial data rate adjust. \J,\J0 Disable serial data rate adjust. \J1 Enable serial data rate adjust. \K \Kn Break type, where n=0-5. Default: n=5. \N Asynchronous connection type \N,\N0 Normal connection. \N1 Diagnostic mode. \N2 Forced-MNP connection. \N3 Auto-reliable connection. \N4 Forced-LAPM (CCITT V.42) connection. \O Initiate MNP reliable connection. \Q Set serial port flow control. \Q,\Q0 Disable flow control. \Q1 Bidirectional XON/XOFF control. \Q2 Unidirectional RTS/CTS control. \Q3 Bidirectional RTS/CTS control. \T \Tn Inactivity timer (n=0-90 minutes). Default: n=0 (disables timer) \U Accept MNP reliable connection. \V Display error control and data compression information. \V,\V0 Standard CONNECT result codes. \V1 CONNECT codes show general error control information. \V2 CONNECT codes show full error control and data compression information. \V3 CONNECT codes show connection speed based on DTE speed. \X XON/XOFF pass through. \X,\X0 Don't pass XON/XOFF through to remote modem. \X1 Pass XON/XOFF codes through to remote modem. \Y Switch to MNP reliable connection. \Z Switch from MNP to normal connection. %A %An Set auto-reliable fallback character, where n=0-127 (used with \C2). Default: n=13 (Enter key). %C Specify MNP class 5 data compression. %C0 MNP data compression disabled. %C1 MNP data compression enabled. %E Auto-retrain. %E,%E0 Retrain disabled. %E1 Retrain enabled. %E2 Enabled (special V.32bis compatibility mode). -J Detect error control. -J,-J0 Disable error control detection phase. -J1 Enable error control detection phase. "H Enable or disable V.42bis data compression. "H,"H0 V.42bis data compression disabled. "H1 Can send but not receive V.42bis data compression. "H2 Can receive but not send V.42bis data compression. "H3 Enable bidirectional V.42bis data compression. "O "On Set maximum V.42bis data block size n (n=6-250). Default: n=250. "S Handshake timing. "S,"S0 Originating modem waits 3 seconds after receiving 1200- or 2400-bps handshake tone; normal timing for V.32/V.32bis modems. "S1 Like "S0, except modem waits 1.6 sec. "S2 Like "S0, except fast handshake performed with V.32/V.32bis modems. "S3 Like "S1, except fast handshake performed with V.32/V.32bis modems. +FCLASS Puts modem in data modem mode. (Class 1 modems only). S REGISTERS Reg- Factory ister Setting Description ____ _____________________________________________________________ S0* 00 Number of rings before modem answers. Range: 0-255 rings. S1 00 Ring count. Range: 0-255 rings. S2 43 Escape code character: 0-127 ASCII. S3 13 Carriage return character: 0-127 ASCII. S4 10 Line feed character: 0-127 ASCII. S5 08 Backspace character: 0-32 or 127 ASCII. S6 02 Time to wait before blind dialing: 0-255 sec. S7* 30 Time to wait for carrier after dial: 0-255 sec. S8 02 Time to pause for each comma: 0-255 sec. S9 06 Carrier detect response time (in 1/10 sec): 1-255. S10 14 Delay between lost carrier and hangup (in 1/10 sec): 1-255. S11* 70 Dialing speed (in 1/1000 sec): 50-255. S12 50 Escape code guard (in 1/50 sec): 0,20-255. S14* 138 Bit-mapped options. S16 00 Modem test options. S18* 00 Maximum time for diagnostic tests: 0-255 sec. S21* 48 Bit-mapped options. S22* 118 Bit-mapped options. S23* 11 Bit-mapped options. S25* 05 Time DTR must remain off (in 1/100 sec): 0-255. S26* 01 RTS-to-CTS delay (in 1/100 sec): 0-255. S27* 64 Bit-mapped options. S28 08 Time (in seconds) allowed to attempt an MNP reliable connection: 0-255 S29 255 Internal buffer size (in words): 0-255; 255 yields 1K byte buffer. S30 00 Number of retrains since last power up: 0-255. S31* 00 Data transmission speed. * The contents of these registers are stored in nonvolatile RAM. Copyright 1992 Intel Corporation All rights reserved. Intel Corporation, 5200 NE Elam Young Parkway, Hillsboro, Oregon 97124-6497