3COM CORPORATION COURIER V.32TERBO FAX WITH ASL Card Type Fax, Modem (asynchronous) Chip Set U.S. Robotics Maximum Data Rate 28.8Kbps Maximum Fax Rate 14.4Kbps Data Bus Unidentified Fax Class Unidentified Data Modulation Protocol Bell 103/212A ITU-T V.21, V.22, V.22bis, V.32, V.32bis, V.32terbo Fax Modulation Protocol Unidentified Error Correction/Compression MNP5, V.42, V.42bis 54155 USER CONFIGURABLE SETTINGS Setting Label Position DTR normal SW1/1 Off DTR forced high SW1/1 On Verbal result codes SW1/2 Off Numeric result codes SW1/2 On Enable result codes displayed SW1/3 On Disable result codes displayed SW1/3 Off Local echo enabled SW1/4 Off Local echo disabled SW1/4 On Auto answer disabled SW1/5 On Auto answer enabled SW1/5 Off CD signal normal SW1/6 Off CD signal forced high SW1/6 On Result codes displayed during both answer and SW1/7 Off originate mode Result codes displayed in originate mode only SW1/7 On Smart mode enabled SW1/8 On Dumb mode enabled SW1/8 Off Normal operation enabled SW1/9 On Escape sequence enabled SW1/9 Off Restore NVRAM defaults SW1/10 Off Restore factory defaults SW1/10 On SEND/RECEIVE PIN ASSIGNMENT Setting Quad Switch Normal Off Not used On Proprietary AT Command Set ABORT Type: Immediate Format: Any key Description: Aborts answering/originating a call; modem hangs up. ANSWER Type: Immediate Format: AT [cmds] A Description: Enables manual answer mode, the modem goes off-hook; pressing any key will abort. ANSWER SEQUENCE Type: Configuration Format: AT [cmds] Bn [cmds] Description: Selects the answer sequence the modem will use Command Function B0 V.32 mode/ITU-T answer sequence enabled B1 HST mode/Bell answer tone enabled ATTENTION Type: Immediate Format: AT [cmds] Description: Tells the modem that a command follows or use alone to test OK result code BIT MAPPED REGISTERS Register Default S51 0 BIT-MAPPED REGISTER S13 Format AT [cmds] S13=n [cmds] Default: 0 Range: 0-255 Unit: Bit-mapped Description: Controls DTR reset, DTR dialing, reset dialing, HST modulation, and MNP3. Bit Value Function 0 0 DTR normal 1 Reset on low DTR 1 0 Normal auto answer operation 1 When ring is received, enter originate and listen for answer tone 2 0 Pause 250msec. Before displaying result codes 1 Immediate result code display 3 0 DTR dialing disabled 1 DTR dialing enabled 4 0 Reset dialing disabled 1 Reset dialing enabled 5 0 HST modulation enabled 1 HST modulation disabled 6 0 MNP 3 enabled 1 MNP 3 disabled 7 0 Hardware reset disabled 1 Hardware reset enabled BIT-MAPPED REGISTER S15 Format: AT [cmds] S15=n [cmds] Default: 0 Range: 0-255 Unit: Bit-mapped Description: Controls HST high frequency equalization, online fallback, back channel, non-error-correcting mode buffer, MNP4, BS/DEL switch, MNP compliance, and Custom applications. Bit Value Function 0 0 HST high frequency equalization enabled 1 HST high frequency equalization disabled 1 0 Online fallback enabled 1 Online fallback disabled 2 0 300bps back channel enabled 1 300bps back channel disabled 3 0 Non-error-correcting mode transmit buffer set to 1.5KB 1 Non-error-correcting mode transmit buffer set to 128 bytes 4 0 MNP 4 enabled 1 MNP 4 disabled 5 0 Use backspace key for delete disabled 1 Use backspace key for delete enabled 6 0 MNP normal 1 MNP adjusted for non compliant modems 7 0 Custom applications only disabled 1 Custom applications only enabled BIT-MAPPED REGISTER S27 Format: AT [cmds] S27=n [cmds] Default: 0 Range: 0-191 Unit: Bit-mapped Description: Controls V.21, V.32 encoding and modulation, V.42 answer tone and handshake, and Unusual software incompatibility. Bit Value Function 0 0 V.21 disabled 1 V.21 enabled 1 0 V.32 trellis coding disabled 1 V.32 trellis coding enabled 2 0 V.32 modulation enabled 1 V.32 modulation disabled 3 0 2100Hz answer tone enabled 1 2100Hz answer tone disabled 4 0 MNP handshake enabled 1 MNP handshake disabled 5 0 V.42 detection phase enabled 1 V.42 detection phase disabled 6 0 Not used 7 0 Unusual software incompatibility disabled 1 Unusual software incompatibility enabled BIT-MAPPED REGISTER S32 Format AT [cmds] S34=n [cmds] Default: 0 Range: 0-63 Unit: Bit-mapped Description: Controls V.23/V.32/V.32bis modulations. Change LED and enable MI/MIC. Bit Value Function 0 0 V.32bis enabled 1 V.32bis disabled 1 0 Enhanced V.32 enabled 1 Enhanced V.32 disabled 2 0 Quick V.32 retrain enabled 1 Quick V.32 retrain disabled 3 0 V.23 disabled 1 V.23 enabled 4 0 Do not change MR LED to represent DSR 1 Change MR LED to represent DSR 5 0 Disable MI/MIC 1 Enable MI/MIC BREAK LENGTH Type: Register Format: AT [cmds] S21=n [cmds] Default: 10 Range: 0-255 Unit: .01 second Description: Sets the length of error control mode breaks sent from DCE to DTE. BREAK TYPE Type: Configuration Format: AT [cmds] &Yn [cmds] Description: Configures action of break signal Command Function &Y0 Empty buffer only &Y1 Empties buffer and break is sent immediately &Y2 Do not empty buffer and break is sent immediately &Y3 Do not empty buffer or send break CARRIER DETECT (CD) Type: Configuration Format: AT [cmds] &Cn [cmds] Description: Controls the CD signal Command Function &C0 Modem does not respond to CD signal &C1 CD signal normal COMPRESSION Type: Configuration Format: AT [cmds] &Kn [cmds] Description: Selects data compression Command Function &K0 Data compression disabled &K1 Auto enabled/disable data compression &K2 Data compression enabled &K3 V.42bis data compression enabled CONNECTION SPEED Type: Configuration Format: AT [cmds] &Nn [cmds] Description: Sets required connection speed, modem will hang up if it cannot connect. Command Function &N0 Variable &N1 300bps &N2 1200bps &N3 2400bps &N4 4800bps &N5 7200bps &N6 9600bps &N7 12Kbps &N8 14.4Kbps &N9 16.8Kbps &N10 21.6Kbps DATA SET READY (DSR) Type: Configuration Format: AT [cmds] &Sn [cmds] Description: Selects DSR options Command Function &S0 DSR forced high &S1 DSR controlled by modem &S2 DSR toggled, CTS follows CD &S3 DSR toggled &S4 Modem sends DTE DSR signal following CD signal DATA TERMINAL READY (DTR) Type: Configuration Format: AT [cmds] &Dn [cmds] Description: Selects modem response to DTR Command Function &D0 Modem does not respond to DTR &D1 Modem goes to command mode after DTR toggles &D2 Modem uses DTR as normal CTS/RTS - DELAY Type: Configuration Format: AT [cmds] S26=n [cmds] Default: 1 Range: 0-255 Unit: .1 second Description: Sets the length of time between RTS and CTS signal sending DIAL Type: Immediate Format: AT [cmds] D<#> [cmds] Example: ATDT 443-3388,,,1111; Description: Dials telephone number according to any modifiers included in the string Note: Any combination of modifiers can be used to produce the desired dial functions in sequence. Command Function P Pulse dialing enabled T Tone dialing enabled , Dialing paused for 2 seconds ; Modem returned to command state after dialing. Can only be placed at the end of the dial command. " Dials letters as if they were numbers; ATDT"GOMICRO" ! Flash function initiated @ Dial, wait for quiet answer, then continue to execute the rest of the dial string W Dial, wait for second dial tone, then continue to execute the rest of the dial string R Answer mode enabled; originate mode disabled following handshake initiation. DIAL - LAST NUMBER Type: Immediate Format: AT [cmds] DL [cmds] Description: Re-dial last number dialed DIAL - STORED NUMBER Type: Immediate Format: AT [cmds] DSn [cmds] Description: Dial stored number from memory location n DISCONNECT BUFFER DELAY Type: Register Format AT [cmds] S38=n [cmds] Default: 0 Range: 0-255 Unit: 1 second Description: Sets maximum duration allowed during buffered data calls for modem to perform clearing functions after losing carrier-signal or receiving a clear call signal from the remote modem and before initiating hang-up process. A value of 0 will allow the modem to hanging-up after DTR drops. ECHO Type: Configuration Format: AT [cmds] En [cmds] Description: Controls echo function; display keyboard commands when enabled. Command Function E0 Echo function disabled E1 Echo function enabled ECHO - ON-LINE Type: Configuration Format: AT [cmds] Fn [cmds] Description: Selects whether data sent while in data mode are echoed Command Function F0 Local echo enabled F1 Local echo disabled ERROR CORRECTION MODE (ARQ) Type: Configuration Format: AT [cmds] &Mn [cmds] Description: Selects active error correction protocols Command Function &M0 Normal mode only &M1 Asynchronous command mode and synchronous data mode &M4 Normal/ARQ mode &M5 ARQ mode only &M6 Character-oriented synchronous &M7 HDLC synchronous ESCAPE SEQUENCE Type: Immediate Format: +++AT [cmds] Description: Initiates the escape sequence and returns the modem to the on-line command state if it receives three escape characters set in S2 within the time allotted by S12. Note: Do not precede this command with AT. EXTENDED COMMAND SET Type: Immediate Format: AT Description: Shows command help screens for all commands beginning with the given prefix. Command Function & Shows AT& extended command set % Shows AT% extended command set EXTENDED RESULT CODES Type: Configuration Format: AT [cmds] &An [cmds] Description: Selects extended result codes Command Function &A0 Extended result codes disabled &A1 ARQ result codes enabled &A2 ARQ result codes enabled and V.32 result code added &A3 Error control and compression result codes enabled FACTORY DEFAULT PROFILE Type: Configuration Format: AT [cmds] &Fn [cmds] Description: Loads factory profile into non-volatile memory FLOW CONTROL CHARACTER - XOFF Type: Register Format: AT [cmds] S23=n [cmds] Default: 19 Range: 0-127 Unit: ASCII Description: Sets the character used to represent XOFF. FLOW CONTROL CHARACTER - XON Type: Register Format: AT [cmds] S22=n [cmds] Default: 17 Range: 0-127 Unit: ASCII Description: Sets the character used to represent XON. FLOW CONTROL PASS-THROUGH Type: Configuration Format: AT [cmds] &In [cmds] Description: Allows modem to act on, then transmit XON/XOFF characters. Command Function &I0 Software flow control disabled &I1 XON/XOFF passthrough enabled &I2 XON/XOFF passthrough disabled &I3 ENQ/ACK enabled in host mode &I4 ENQ/ACK enabled in terminal mode &I5 XON/XOFF passthrough disabled in error correction mode FLOW CONTROL TYPE Type: Configuration Format: AT [cmds] &Hn [cmds] Description: Sets type of flow control used by modem Command Function &H0 Flow control disabled &H1 CTS/RTS flow control enabled &H2 XON/XOFF flow control enabled &H3 CTS/RTS and XON/XOFF flow control enabled FLOW CONTROL TYPE Type: Configuration Format: AT [cmds] &Rn [cmds] Description: Controls receive data hardware flow control and RTS signals Command Function &R0 Delay CTS after RTS. See S26 on length of time. &R1 Modem ignores RTS &R2 Received data to DTE when RTS is on GUARD TIME Type: Register Format: AT [cmds] S43=n [cmds] Default: 100 Range: 0-255 Unit: .02 second Description: Sets guard time for remote access sequence GUARD TONE Type: Configuration Format: AT [cmds] &Gn [cmds] Description: Commands the modem to transmit a guard tone Note: Used primarily for international data transmission Command Function &G0 Guard tone disabled &G1 550Hz guard tone enabled &G2 1800Hz guard tone enabled HANDSHAKE TIMER Type: Register Format: AT [cmds] S28=n [cmds] Default: 8 Range: 0-255 Unit: .1 second Description: Sets the length of handshake time, so modems with V.32bis, V.FC and V.34 are given a chance to connect at 9600bps or higher. HOOK CONTROL Type: Immediate Format: AT [cmds] Hn [cmds] Description: Selects whether the modem is on-hook or off-hook Command Function H0 Modem commanded to go on-hook (hang-up) H1 Modem commanded to go off-hook (pick-up) INACTIVITY TIMER Type: Register Format: AT [cmds] S19=n [cmds] Default: 0 Range: 0-90 Unit: 1 minute Description: Sets the length of time that the modem does not receive information before it disconnects. S19=0 will disable. LINE TYPE Type: Configuration Format: AT [cmds] &Ln [cmds] Description: Select the line type Command Function &L0 Dial-up enabled &L1 Leased-line enabled &L2 HST cellular enabled LIST AMPERSAND COMMANDS Type: Immediate Format: AT [cmds] &$ [cmds] Description: Displays ampersand (&) commands LIST BASIC COMMANDS Type: Immediate Format: AT [cmds] $ [cmds] Description: Displays basic commands LIST DIAL COMMANDS Type: Immediate Format: AT [cmds] D$ [cmds] Description: Displays dial commands LIST PERCENT COMMANDS Type: Immediate Format: AT [cmds] %$ [cmds] Description: Displays percent (%) commands LIST S-REGISTERS Type: Immediate Format: AT [cmds] S$ [cmds] Description: Displays the S-registers LOCAL CONFIGURATION Type: Configuration Format: AT [cmds] %Cn [cmds] Description: Set local configuration remotely Command Function %C0 Defer configuration until call terminated %C1 Restore original configuration %C2 Execute configuration immediately LOCAL SERIAL PORT SPEED Type: Register Format: AT [cmds] %Bn [cmds] Description: Selects DTE speed remotely Command Function %B0 Sets to 110bps speed %B1 Sets to 300bps speed %B2 Sets to 600bps speed %B3 Sets to 1200bps speed %B4 Sets to 2400bps speed %B5 Sets to 4800bps speed %B6 Sets to 9600bps speed %B7 Sets to 19.2Kbps speed %B8 Sets to 38.4Kbps speed %B9 Sets to 57.6Kbps speed %B10 Sets to 115.2Kbps speed LOCK SERIAL PORT Type: Configuration Format: AT [cmds] &Bn [cmds] Description: Sets operation of serial port speed Command Function &B0 Serial speed follows connect speed &B1 Serial speed locked &B2 Serial speed locked in ARQ mode, Variable in non-ARQ mode. LOG-ON ATTEMPTS Type: Register Format: AT [cmds] S41=n [cmds] Default: 0 Range: 0-255 Unit: Attempts Description: Sets the number of allowable log-on attemtps for remote access ON-LINE Type: Immediate Format: AT [cmds] On [cmds] Description: Controls on-line command (data transmission) mode options. Note: The O command must be placed at the end of the command string. Command Function O0 On-line command mode with no retraining enabled O1 On-line command mode with retraining enabled PARITY Type: Configuration Format: AT [cmds] %Fn [cmds] Description: Sets parity and data bits remotely Command Function %F0 No Parity, 8 data bits %F1 Mark Parity, 7 data bits %F2 Parity odd, 7 data bits %F3 Parity even, 7 data bits PASSWORD Type: Configuration Format: Read: AT [cmds] %Pn? [cmds] Write: AT [cmds] %Pn=x [cmds] Description: Reads or writes a password to memory location n. n=0-1 PAUSE Type: Immediate Format: AT [cmds] / [cmds] Description: Pause for 125 msec PULSE DIALING Type: Configuration Format: AT [cmds] P [cmds] Description: Enables pulse dialing Note: This command can be duplicated with the P modifier in the D (Dial) command. PULSE DIALING RATIO Type: Configuration Format: AT [cmds] &Pn [cmds] Description: Selects pulse dial make/break ratio Command Function &P0 39/61ms at 10pps (North America) &P1 33/67ms at 10pps (Europe) RECONNECT - LEASED-LINE Type: Register Format: AT [cmds] S44=n [cmds] Default: 15 Range: 0-255 Unit: 1 second Description: Sets the length of time the modem senses loss of carrier before re-establishing a leased-line conntion REMOTE ACCESS ESCAPE CHARACTER Type: Register Format AT [cmds] S42=n [cmds] Default: 126 Range: 0-255 Unit: ASCII Description: Selects a character used for the remote access escape sequence REPEAT CONTINUALLY Type: Configuration Format: AT [cmds] > [cmds] Description: Causes modem to repeat command string continually or up to 10 dial attempts; until a keyboard key is pressed REPEAT PREVIOUS COMMAND CONTINUALLY Type: Immediate Format: AT [cmds] A> [cmds] Description: Repeat previous command continually Note: Do not precede this command with AT, or follow it with . REPEAT PREVIOUS COMMAND Type: Immediate Format: A/ Description: Repeat previous command only once Note: Do not precede this command with AT, or follow it with . REPORT INFORMATION Type: Immediate Format: AT [cmds] In [cmds] Description: Displays information requested Command Function I0 Reports product code I1 Reports ROM checksum I2 Reports RAM checksum I3 Reports call duration and real time I4 Reports current command settings I5 Reports NVRAM settings I6 Reports link diagnostics I7 Reports product configuration I10 Reports dial security account status RESULT CODES Type: Configuration Format: AT [cmds] Qn [cmds] Description: Enables modem to send result codes to the DTE Command Function Q0 Result code sending enabled Q1 Result code sending disabled Q2 Result code sending enabled while in originate mode RESULT CODE FORMAT Type: Configuration Format: AT [cmds] Vn [cmds] Description: Selects word or numeric format for information-text and result codes Command Function V0 Numeric format enabled V1 Verbose (word) format enabled SECURITY Type: Register Format: AT [cmds] S53=n [cmds] Default: 0 Range: 0-7 Description: Controls security features Bit Value Function 0 0 Dial security disabled 1 Dial security enabled 1 0 Password prompting disabled 1 Password prompting enabled 2 0 Local access passsword protection disabled 1 Local access passsword protection enabled SELECT CALL PROGRESS RESULT CODES Type: Configuration Format: AT [cmds] Xn [cmds] Default: X7 Description: Enables selection of tone detection and associated result code format options SOFT RESET Type: Immediate Format: AT [cmds] Z [cmds] Description: Restores modem profile previously saved in non-volatile memory SPEAKER MODE Type: Configuration Format: AT [cmds] Mn [cmds] Description: Selects various speaker options Command Function M0 Speaker disabled M1 Speaker enabled until carrier signal detected M2 Speaker enabled M3 Speaker enabled following dialing, then disabled after carrier signal detected. STATUS-REGISTER Type: Configuration Format: Read: AT [cmds] Sn? [cmds] Write: AT [cmds] Sn=x [cmds] Description: Writes to or reads from a specified register Command Function Sn.b=x Write to register bit b using values 0 (off) and 1 (on) for x STORE ACTIVE PROFILE Type: Configuration Format: AT [cmds] &W [cmds] Description: Writes active profile into the non-volatile memory STORE TELEPHONE NUMBER Type: Configuration Format: AT [cmds] &Zn=x [cmds] Description: Writes selected telephone numbers into the non-volatile memory at location n Note: The characters described in the D command are valid for use in the &Z command. Command Function &Zn=L Writes last executed dial string into the non-volatile memory at location n &Zn? Displays phone number from non-volatile memory at location n &ZC=x Writes command string into the non-volatile memory at location n &ZC? Displays stored command string SYNCHRONOUS CLOCK SOURCE Type: Configuration Format: AT [cmds] &Xn [cmds] Description: Select clock source SYNCHRONOUS CLOCK SPEED Type: Configuration Format: AT [cmds] %Nn [cmds] Description: Sets synchronous clock speed TEST MODES Type: Configuration Format: AT [cmds] &Tn [cmds] Description: Controls loopback tests, analog, digital, remote digital, and self tests. Command Function &T0 Testing disabled &T1 Local analog loopback enabled &T3 Local digital loopback enabled &T4 Remote digital loopback enabled &T5 Remote digital loopback prohibited &T6 Remote digital loopback initiated &T7 Remote digital loopback w/ self-test &T8 Local analog loopback w/ self-test TEST MODES Type: Configuration Format: AT [cmds] S16=n [cmds] Default: 0 Range: 0-15 Description: Controls loopback tests; analog, digital, dial, and test pattern tests. Bit Value Function 0 0 Local analog loopback disabled 1 Local analog loopback enabled 1 0 Dial test disabled 1 Dial test enabled 2 0 Test pattern disabled 1 Test pattern enabled 3 0 Remote digital loopback not initiated 1 Remote digital loopback initiated TEST TIMER Type: Register Format AT [cmds] S18=n [cmds] Default: 0 Range: 0-255 Unit: 1 second Description: Sets the maximum duration for modem tests Note: S18=0 disables the timer and allows an indefinite duration. TONE DIALING Type: Configuration Format: AT [cmds] T [cmds] Description: Enables tone dialing mode Note: This command can be duplicated with the T modifier in the D (Dial) command. TONE RECOGNITION Type: Immediate Format: AT [cmds] %T [cmds] Description: Enables tone recognition VOICE/DATA OPTIONS Type: Register Format: AT [cmds] S32=n [cmds] Description: Select various options the modem will perform Command Function S32=0 Disabled S32=1 Modem commanded to go off-hook (pick-up) in originate mode S32=2 Modem commanded to go off-hook (pick-up) in answer mode S32=3 Re-dial last number dialed S32=4 Dial stored number at memory location 0 S32=5 Auto-answer toggle on/off S32=6 Reset modem S32=7 Remote digital loopback initiated S32=8 Busy out phone line toggle S32=9 Execute stored command string V.21 - HANDSHAKE Type: Register Format: AT [cmds] S29=n [cmds] Default: 20 Range: 0-255 Unit: .1 second Description: Sets the length of handshake time for V.21. V.32 - HANDSHAKE Type: Register Format: AT [cmds] S28=n [cmds] Default: 8 Range: 0-255 Unit: .1 second Description: Sets the length of handshake time for V.32.