PRACTICAL PERIPHERALS, INC. PC PCMCIA 288, PC PCMCIA 288 EZ-PORT Card Type Modem (asynchronous) Chip Set Unidentified Maximum Modem Rate 28.8Kbps Maximum Fax Rate 14.4Kbps Data Modulation Protocol Bell 103/212A ITU-T V.34, V.32bis, V.32, V.22bis, V.22, V.21, V.FC Fax Modulation Protocol ITU-T V.17, V.27ter, V.29 Error Correction/Compression MNP5, V.42, V.42bis Fax Class Class I & II Data Bus PCMCIA 54792 SUPPORTED COMMAND SET Basic AT Commands AT, ‘+++’, A/ A, D, E, H, M, V, W, X, Y, Z &A, &G, &S, &V, &W, &Y, &Z S Registers S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S18, S25, S30, S36, S37, S38, S46, S48, S82, S86, S95, S108, S109, S110 Note: See MHI Help File for full command documentation. Proprietary AT Command Set AUTO-MODE DETECTION Type: Configuration Format: AT [cmds] Nn [cmds] Description: Selects various options for the automatic detection and negotiation of protocols during the handshake process if the modem is communicating with a remote modem of dissimilar speed. Command Function N0 Auto-mode detection disabled N1 In originate mode, handshake begins at line speed designated by the S37 register. Modem can shift to a slower speed if necessary. In answer mode, handshake attempted with the following protocols in order - V.FC, V.32bis, V.32, V.22bis, V.22 or Bell 212, V.21, and Bell 103 COMMUNICATION PROTOCOLS Type: Configuration Format: AT [cmds] Bn [cmds] Description: Selects the communication protocol for data calls Note: The B command allows the simultaneous selection of more than one suffix, enabling multiple protocols. Command Protocol B0 ITU-T V.22 at 1200bps B1 Bell 212A at 300 or 1200bps B15 ITU-T V.21 at 300bps B16 Bell 103 at 300bps COMMUNICATIONS MODE Type: Configuration Format: AT [cmds] &Mn [cmds] Description: Selects communications mode Command Mode &M0 Asynchronous mode COMMUNICATIONS MODE Type: Configuration Format: AT [cmds] &Qn [cmds] Description: Selects communications mode options Command Mode &Q0 Asynchronous mode, serial port speed follows connect speed. &Q4 Hayes AutoSync mode &Q5 Error correction mode &Q6 Buffered asynchronous mode &Q8 MNP operational mode &Q9 Conditional data compression DATA CARRIER DETECT (DCD) Type: Configuration Format: AT [cmds] &Cn [cmds] Description: Selects whether the DCD option is enabled or disabled Command Function &C0 DCD enabled &C1 DCD enabled after carrier signal detected &C2 DCD on except during disconnect DATA TERMINAL READY (DTR) Type: Configuration Format: AT [cmds] &Dn [cmds] Description: Selects modem response to DTR Note: The action each variant of &D causes depends on the setting of &Q Command Function &D0 Modem does not respond to DTR &D1 Modem goes to command mode after DTR goes is off &D2 Modem goes to command mode and disconnects (hangs up) after DTR goes off; Auto-Answer is disabled. &D3 Modem is initialized after DTR goes off FACTORY DEFAULT PROFILE Type: Configuration Format: AT [cmds] &F [cmds] Description: Sets values in active profile to values found in the default profile Command Function &F0 Restore factory default Hayes-compatible parameters &F1 Restore factory default IBM-compatible parameters &F2 Restore factory default Macintosh software handshake parameters &F3 Restore factory default Macintosh hardware handshake parameters FLOW CONTROL Type: Configuration Format: AT [cmds] &Kn [cmds] Description: Enables flow control options Command Function &K0 Flow control disabled &K3 RTS/CTS flow control enabled &K4 XON/XOFF flow control enabled HELP Type: Immediate Format: AT [cmds] $H Description: Accesses summary of the modem’s commands ON-LINE Type: Immediate Format: AT [cmds] On [cmds] Description: Controls on-line command (data transmission) state 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 O2 On-line command mode with rate negotiation REPORT INFORMATION Type: Immediate Format: AT [cmds] In [cmds] Description: Displays information requested Command Function I0 Reports modem model and speed I1 Reports ROM checksum I2 Performs a ROM checksum, reports OK, or ERROR I3 Reports firmware revision number I4 Reports modem feature availability I6 Reports link statistics 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 Modem returns result codes when originating a call, but does not return result codes from the answer mode. SPEAKER VOLUME Type: Configuration Format: AT [cmds] Ln [cmds] Description: Command is included for compatibility only. It performs no function TEST MODES Type: Immediate Format: AT [cmds] &Tn Description: Selects test options Command Function &T0 End current test &T1 Begin local analog loopback test &T3 Begin local digital loopback &T4 Grant remote digital loopback request &T5 Deny remote digital loopback request &T6 Request remote digital loopback &T7 Request remote digital loopback and self-test &T8 Begin local analog loopback and self-test &T19 Perform RTS/CTS cable test TRELLIS CODE MODULATION Type: Immediate Format: AT [cmds] &U [cmds] Description: Controls trellis encoding Command Function &U0 Enables trellis encoding &U1 Disables trellis encoding V.32 - AUTO-RETRAIN Type: Configuration Format: AT [cmds] &Bn [cmds] Description: Controls auto-retrain function if poor line quality is detected Command Function &B0 Auto-retrain disabled modem hangs-up &B1 Auto-retrain enabled if line quality is poor &B2 Auto-retrain enabled, disconnect if line quality is poor S(status) -REGISTERS DCE SPEED Type: Register Format AT [cmds] S43 [cmds] Description: Displays the DCE speed of the current connection PACKET SIZE Type: Register Format AT [cmds] S136=n [cmds] Range: 0-2 Unit: frame size Description: Designates the LAP-M packet size PRIVATE CIRCUIT CARRIER LEVEL Type: Register Format AT [cmds] S63=n [cmds] Range: 0-15 Unit: -dBm Description: Controls the carrier power level in dBm for leased line operation. PROBE TIMING Type: Register Format: AT [cmds] S97=n [cmds] Description: Sets the duration of the signal used by the modem in answer mode during a V.32 automode handshake to determine if the calling modem is a V.22 or V.22bis type modem RING SETTINGS Type: Register Format: AT [cmds] S101=n [cmds] Range: 0-255 Unit: bit-mapped Description: Sets the distinctive ring setting