PRACTICAL PERIPHERALS, INC. PC144MT/MC144MT Modem Type Data (synchronous/asynchronous)/Fax Maximum Data Rate 14.4Kbps Maximum Fax Rate 14.4Kbps Data Bus External Fax Class Class I & II Data Modulation Protocol Bell 103A/212A ITU-T V.21, V.22, V.22bis, V.32, V.32bis Fax Modulation Protocol ITU-T V.17, V.27ter, V.29 Error Correction/Compression MNP5, V.42, V.42bis [Image] CONNECTIONS Purpose Location Purpose Location Line out CN1 DC power CN4 Line in CN2 Power switch SW1 RS-232/422 CN3 DIAGNOSTIC LED(S) LED Color Status Condition AA Red On Auto-answer enabled AA Red Off Auto-answer disabled AA Red Blinking Phone is ringing RX Red On Modem is receiving data RX Red Off Modem is not receiving data TX Red On Modem is transmitting data TX Red Off Modem is not transmitting data CD Red On Carrier signal detected CD Red Off Carrier signal not detected CD Red Blinking Modem is retraining OH Red On Modem is off-hook OH Red Off Modem is on-hook HS Red On Modem is operating at 4800bps or faster HS Red Off Modem is operating at slower than 4800bps TR Red On DTR signal is high TR Red Off DTR signal is low MR Red On Power is on MR Red Off Power is off Proprietary AT Command Set CALLER ID Type: Configuration Format: AT [cmds] %CCID=n [cmds] Example: AT %CCID2 Description: Controls the Caller ID function. Command Function » %CCID=0 Caller ID disabled. %CCID=1 Caller ID displays single message. %CCID=2 Caller ID displays all messages. COMMAND SET Type: Configuration Format: AT [cmds] %DUMBn [cmds] Example: AT %DUMB1 Description: Disables the AT command set. Note: The AT command set is always active for the first 20 seconds after the modem is powered up. AT%DUMB0 can be entered during this time period to re-enable the command set. Command Function » %DUMB0 Command set enabled. %DUMB1 Command set disabled. EXTENDED RING Format: AT [cmds] S101=n [cmds] Example: ATS101=40 Default: 0 Range: 0 - 255 Unit: Bit-mapped Description: Selects the response to extended ring types. Bit Value Function 0 » 0 Do not respond to ring type A. 1 Respond to ring type A. 1 0 Not used. 2 » 0 Do not respond to ring type C. 1 Respond to ring type C. 3 » 0 Do not respond to ring type D. 1 Respond to ring type D. 4 » 0 Do not respond to ring type E. 1 Respond to ring type E. 5 0 Not used. 6 » 0 Do not respond to ring type G. 1 Respond to ring type G. 7 » 0 Report RING for all ring types. 1 Report RING n where n is the ring type. HELP SCREENS Type: Immediate Format: AT [cmds] $H Example: AT $H Description: Shows modem help screens. REDIAL Type: Immediate Format: AT [cmds] DL Example: AT M1 DL Description: Redials the last number dialed. REPORT INFORMATION Type: Immediate Format: AT [cmds] In Example: AT I1 &W Description: Displays modem properties. Command Function I0 Reports modem model and speed. I1 Reports checksum number. I2 Reports checksum result. I3 Reports firmware version. I4 Reports current command settings. I6 Reports current connection’s statistics.