PRACTICAL PERIPHERALS, INC. PC288LCD V.FAST, MC288LCD V.FAST 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.21, V.22, V.22bis, V.32, V.32bis, V.Fast 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 External 54793 DIAGNOSTIC LED(S) LED Color Status Condition AA Unidentified On Auto-answer enabled AA Unidentified Off Auto-answer disabled AA Unidentified Blinking Phone is ringing RX Unidentified On Modem is receiving data RX Unidentified Off Modem is not receiving data TX Unidentified On Modem is transmitting data TX Unidentified Off Modem is not transmitting data CD Unidentified On Carrier signal detected CD Unidentified Off Carrier signal not detected OH Unidentified On Modem is off-hook OH Unidentified Off Modem is on-hook RS Unidentified On Modem is ready to send data RS Unidentified Off Modem is not ready to send data TR Unidentified On DTR signal is high TR Unidentified Off DTR signal is low EC Unidentified On Error correction enabled EC Unidentified Off Error correction disabled CS Unidentified On Modem is clear to send data CS Unidentified Off Modem is not clear to send data MR Unidentified On Power is on MR Unidentified Off Power is off 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. &Q1 Synchronous mode 1 &Q2 Synchronous mode 2 &Q3 Synchronous mode 3 &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 &K1 RTS to CTS flow control enabled &K2 XON/XOFF flow control enabled &K3 RTS/CTS flow control enabled &K4 XON/XOFF flow control enabled &K5 Transparent XON/XOFF flow control enabled &K6 XON/XOFF flow control with pass through enabled &K7 RTS/CTS flow control with XON/XOFF 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: Controls speaker volume Command Function L0 Low volume setting L1 Low volume setting L2 Medium volume setting L3 Highest volume setting 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