U. S. ROBOTICS, INC. COURIER V.32 Card Type Modem (synchronous/asynchronous) Chip Set Unidentified Maximum Data Rate 9600bps Data Bus External Data Modulation Protocol Bell 103/212A ITU-T V.21, V.22, V.22bis, V.32 Error Correction/Compression MNP5 [Image] CONNECTIONS Function Label Function Label Power switch SW1 Line out CN3 DC power CN1 RS-232/422 CN4 Line in CN2 USER CONFIGURABLE SETTINGS Setting Label Position DTR forced high SW2/1 On DTR normal SW2/1 Off Verbose result codes SW2/2 Off Numeric result codes SW2/2 On Result code display enabled SW2/3 On Result code display disabled SW2/3 Off Local echo enabled SW2/4 Off Local echo disabled SW2/4 On Auto answer disabled SW2/5 On Auto answer enabled SW2/5 Off CD signal normal SW2/6 Off CD forced high SW2/6 On Result codes displayed during originate and SW2/7 Off answer modes Result codes not displayed during answer mode SW2/7 On when SW1/3 is On Smart mode SW2/8 On Dumb mode SW2/8 Off Modem goes on-hook, command mode enabled, ‘OK’ SW2/9 On reported Modem remains off-hook, command mode enabled, SW2/9 Off ‘NO CARRIER’ reported Load configuration from NVRAM SW2/10 Off Load configuration from ROM SW2/10 On DTE/DCE MODE SELECTION Setting SW3/1 SW3/2 SW3/3 SW3/4 DCE mode Off Off Off Off DTE mode On On On On DIAGNOSTIC LED(S) LED Color Status Condition HS Red On Modem is operating at 2400bps or faster HS Red Off Modem is operating at slower than 2400bps AA Red On Auto-answer enabled AA Red Off Auto-answer disabled CD Red On Carrier signal detected or when SW2/6 is on CD Red Off Carrier signal not detected OH Red On Modem is off-hook OH Red Off Modem is on-hook RD Red Blinking Modem is receiving data RD Red Off Modem is not receiving data SD Red Blinking Modem is transmitting data SD Red Off Modem is not transmitting data MR Red On Power is on MR Red Off Power is off MR Red Blinking During test mode, retraining, including online fallback RS Red On RTS signal is high RS Red Off RTS signal is low CS Red On CTS signal is high and during synchronous mode CS Red Off CTS signal is low, synchronous mode disabled ARQ Red On Error correction enabled ARQ Red Off Error correction disabled ARQ Red Blinking Error correction activated SYN Red On AT&M3 is set or AT&M1 and synchronous mode is set SYN Red Off Modem not in synchronous mode SUPPORTED COMMAND SET Basic AT Commands AT, ‘+++’, A/ A, E, F, H, M, O, P, Q, S, T, V, X &F, &G, &J, &P, &W, &X, &Z S Registers S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S26 Note: See MHI Help file for full command documentation. Proprietary AT Command Set ABORT Type: Immediate Format: Description: Aborts current command issued; dial, repeat mode (>), and repeat command (A>) 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, 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 Not used 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, and BS/DEL switch, MNP compliance, and Interbridge network compatibility. 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 450bps back channel enabled 1 450bps 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 (May cause software incompatibility) 6 0 MNP normal 1 MNP adjusted for non compliant modems 7 0 Interbridge network compatibility disabled 1 Interbridge network compatibility enabled BREAK LENGTH Type: Register Format: AT [cmds] S21=n [cmds] Default: 10 Range: Unidentified Unit: 10 ms 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 Break empties buffer &Y1 Break empties buffer and is sent immediately &Y2 Break does not empty buffer and is sent immediately &Y3 Send break with transmitted data COMMPRESSION Type: Configuration Format: AT [cmds] &Kn [cmds] Description: Controls data compression Command Function &K0 Data compression disabled &K1 Auto enable/disabled data compression &K2 Data compression enabled CONNECTION SPEED Type: Configuration Format: AT [cmds] &Nn [cmds] Description: Sets required connection speed Command Function &N0 Variable &N1 300bps &N2 1200bps &N3 2400bps &N4 4800bps &N5 7200bps &N6 9600bps DATA SET READY (DSR) Type: Configuration Format: AT [cmds] &Sn [cmds] Description: Selects DSR options Command Function &S0 DSR forced high &S1 DSR high only while modem is connected 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. ! Flash function initiated / Pause for 125ms then proceed with dial string @ 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 - 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: Unidentified 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. DSR TIMER Type: Register Format: AT [cmds] S24=n [cmds] Default: 0 Range: 0-25 Unit: .01 second Description: Sets the delay between DSR pulses, when &S1 is set ERROR CORRECTION MODE Type: Configuration Format: AT [cmds] &Mn [cmds] Description: Selects active error correction protocols Command Function &M0 Normal mode only &M3 Continuos synchronous mode &M4 Auto-detect mode &M5 ARQ mode only EXTENDED RESULT CODES Type: Configuration Format: AT [cmds] &An [cmds] Description: Selects extended result codes Command Function &A0 /ARQ result codes disabled &A1 /ARQ result codes enabled FLOW CONTROL CHARACTER - XOFF Type: Register Format: AT [cmds] S23=n [cmds] Default: 19 Range: 11-127 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: 11-127 Unit: ASCII Description: Sets the character used to represent XON 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 RTS signal before sending CTS signal &R1 Modem ignores RTS &R2 Received data to DTE when RTS is on FLOW CONTROL PASS-THROUGH Type: Configuration Format: AT [cmds] &In [cmds] Description: Allows modem to act on and then transmit XON/XOFF characters Command Function &I0 Software flow control disabled &I1 XON/XOFF pass-through enabled &I2 XON/XOFF pass-through disabled &I3 Host mode enabled, Hewlett Packard protocol &I4 Terminal mode enabled, Hewlett Packard protocol &I5 XON/XOFF to remote for non-ARQ link flow control enabled HELP SCREENS Type: Immediate Format: AT $ Description: Shows command help screens for all commands beginning with the given prefix, or no prefix if none is given. Command Function $ Shows command summary help screen &$ Shows extended command summary help screen D$ Shows dial command summary help screen S$ Shows S-register summary help screen -S Stop/restart display of help screen -C Cancel display of help screen -K Cancel display of help screen INACTIVITY TIMER Type: Register Format: AT [cmds] S19=n [cmds] Default: 0 Range: Unidentified Unit: 1 minute Description: Sets the length of time that the modem does not receive information before it disconnects. LEASED LINE Type: Configuration Format: AT [cmds] &Ln [cmds] Description: Controls lease line operation Command Function &L0 lease line operation disabled &L1 lease line operation enabled 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 only MODULATION SELECTION Type: Register Format: AT [cmds] S27=n [cmds] Description: Controls the modulation for 300bps transmission Command Function S27=0 Bell103 only S27=1 ITU-T V.21, all calls answered in either Bell103 or V.21, originate calls in V.21 PAUSE Type: Configuration Format: AT [cmds] / [cmds] Description: Command string execution is paused for 125ms Note: Multiple slashed can be used consecutively to add up to the duration of delay desired. REPEAT COMMAND CONTINUALLY Type: Configuration Format: AT [cmds] > [cmds] Description: Causes modem to repeat command continually until is pressed Note: If used in the dial string, 10 attempts will be made. REPEAT COMMAND STRING Type: Configuration Format: AT [cmds] A> [cmds] Description: Causes modem to repeat continually last issued command until is pressed REPORT INFORMATION Type: Immediate Format: AT [cmds] In [cmds] Description: Displays modem properties Command Function I0 Reports product code I1 Reports ROM checksum result I2 Reports RAM checksum result I3 Reports current call time or clock time I4 Reports current command settings I5 Reports current NVRAM settings I6 Reports current connection’s statistics I7 Reports product configuration TEST MODES Type: Register Format: AT [cmds] S16=n [cmds] Description: Selects modem test modes Command Function S16=0 Test mode disabled S16=1 Analog loopback test enabled S16=2 Dial test enabled S16=4 Test pattern enabled S16=5 Analog loopback test with test pattern enabled S16=8 Remote digital loopback enabled TIME DISPLAY Type: Immediate Format: AT [cmds] Kn [cmds] Description: Displays the current call time or clock time Command Function K0 Display length of last call K1 Display actual time TRANSMITTER Type: Configuration Format: AT [cmds] Cn [cmds] Description: Controls the transmitter Command Function C0 Transmitter disabled, receive only mode C1 Transmitter enabled V.32 - HANDSHAKE TIME Type: Register Format: AT [cmds] S28=n [cmds] Default: 8 Range: 0-255 Unit: .1 second Description: Sets length of V.32 handshake