ZOOM TELEPHONICS, INC. 28.8K EXTERNAL V.34 Card Type Modem, Fax Chip Set Unidentified I/O Options Line in (RJ-11), line out (RJ-11), DTE (25-pin serial connector) Maximum Modem Rate 28.8Kbps Maximum Fax Rate 14.4Kbps Data Modulation Protocol Bell 103A/212A, ITU-T V.21, V.22, V.22bis,V.23, V.32, V.32bis, V.34 Fax Modulation Protocol V.17, V.21, CH2, V.27ter, V.29, V.33 Error Correction/Compression MNP5, MNP10, V.42, V.42bis Fax Class Class I & II Data Bus External [Image] CONNECTIONS Function Label Function Label Power jack CN1 Line in CN3 DTE connector (25-pin CN2 Line out CN4 serial connector) DIAGNOSTIC LED(S) LED Color Status Condition OH Unidentified On Modem is off-hook OH Unidentified Off Modem is on-hook AA Unidentified On Auto-answer enabled AA Unidentified Off Auto-answer disabled AA Unidentified Blinking Phone is ringing RD Unidentified On Modem is receiving data RD Unidentified Off Modem is not receiving data TD Unidentified On Modem is transmitting data TD Unidentified Off Modem is not transmitting data TR Unidentified On DTR signal is high TR Unidentified Off DTR signal is low CD Unidentified On Carrier signal detected CD Unidentified Off Carrier signal not detected CS Unidentified On CTS signal is high CS Unidentified Off CTS signal is low EC Unidentified On Error correction enabled EC Unidentified Off Error correction disabled DC Unidentified On Data compression enabled DC Unidentified Off Data compression disabled 14.4 Unidentified On Modem connected at 14.4Kbps 14.4 Unidentified Off Modem not connected at 14.4Kbps V.34 Unidentified On Modem not connected in V.34 mode V.34 Unidentified Off Modem connected in V.34 mode FAX Unidentified On Fax connection has been made to remote fax modem FAX Unidentified Off Fax connection has not been made to remote fax modem MSG Unidentified On Faxes are waiting MSG Unidentified Off Faxes are not waiting MR Unidentified On Power is on MR Unidentified Off Power is off MR Unidentified Blinking Modem is in self-test mode SUPPORTED COMMAND SET Basic AT Commands AT, A/ A, B, E, H, M, O, P, T, V, W, Z &C, &K, &M, &T, &V, &W, &Y, &Z Extended AT Commands %C, %L, %Q \A, \B, \G, \L, \N )M *H -K, -Q :E +MS S Registers S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S14, S16, S18, S21, S22, S23, S24 S25, S26, S27, S28, S29, S31, S32, S33, S38, S40, S41 Note: See MHI Help File for full command documentation. PROPRIETARY AT COMMAND SET AUTO-MODE DETECTION Type: Configuration Format: AT [cmds] Nn [cmds] Description: Enables/disbles automatic detection. Command Function N0 Auto-mode detection disabled N1 Auto-mode detection enabled 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. &Q5 Error correction mode &Q6 Buffered asynchronous mode 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 handshaking or connected 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 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 DIAL Type: Immediate Format: AT [cmds] D<#> [cmds] 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 DL Re-dial last number DP Pulse dialing enabled DS=n Dial stored telephone number n (0-3) DT Tone dialing enabled DW Dialing resumed following dial tone detection D, Dialing paused for amount of time specified in S8 register D! Flash function initiated. Modem commanded to go off-hook for specified time before returning on-hook. D@ Wait for Quite Answer function enabled. Modem waits until a "quiet answer," a ring-back signal followed by silence up to the time specified in S7, is received prior to executing the rest of the dial string. D^ Calling tone enabled D; Modem returned to idle state after dialing. The semicolon can only be placed at the end of the dial command. GUARD TONE Type: Configuration Format: AT [cmds] &Gn [cmds] Description: Commands the modem to transmit a guard tone in V.22/V.22bis Note: Used primarily for international data transmission Command Function &G0 Guard tone disabled &G1 Guard tone disabled &G2 1800Hz guard tone enabled 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 Not used &P2 Not used &P3 Not used REPORT INFORMATION Type: Immediate Format: AT [cmds] In [cmds] Description: Displays information requested Command Function I0 Reports product code I1 Reports ROM checksum I2 Tests and reports ROM checksum I3 Reports firmware revision code I4 Reports identifier string I5 Reports country code I6 Reports data pump chipset revision SELECT CALL PROGRESS RESULT CODES Type: Configuration Format: AT [cmds] Xn [cmds] Description: Enables selection of tone detection and associated result code format options Command Function X0 Sends OK, CONNECT, RING, NO CARRIER, ERROR, and NO ANSWER X1 Sends OK, CONNECT, RING, NO CARRIER, ERROR, NO ANSWER, and CONNECT speed X2 Sends OK, CONNECT, RING, NO CARRIER, ERROR, NO ANSWER, CONNECT speed and NO DIALTONE X3 Sends OK, CONNECT, RING, NO CARRIER, ERROR, NO ANSWER, CONNECT speed and BUSY X4 Sends all responses 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 TRANSMIT DATA FLOW CONTROL Type: Configuration Format: AT [cmds] &Kn [cmds] Description: Enables TD flow control options Command Function &K0 Flow control disabled &K3 RTS/CTS flow control enabled &K4 XON/XOFF flow control enabled EXTENDED AT COMMAND SET AUTO-RETRAIN - AUTO-FALLBACK/FALL-FORWARD Type: Configuration Format: AT [cmds] %En [cmds] Description: Controls auto-retrain mode and fallback/fall-forward Command Function %E0 Auto-retrain disabled %E1 Auto-retrain enabled %E2 Auto-fallback/fall-forward enabled %E3 Auto-retrain and fast hang up enabled TRANSMISSION LEVEL - CELLULAR Type: Configuration Format: AT [cmds] @Mn [cmds] Range: 11-31 Unit: -1 dBm Description: Sets the signal level for transmission over cellular communications Command Function @M0 -26 dBm @M1 -30 dBm @M2-@M10 -10 dBm @M11 -11 dBm @M12 -12 dBm @M30 -30 dBm S(status)-REGISTERS BREAK OPTIONS Type: Register Format AT [cmds] S82=n [cmds] Description: Sets the method for break transmission during error-control and ASB connections. Command Function S82=3 Expedited signaling, immediately send timed break S82=7 Destructive signaling, buffers cleared, immediately send timed break S82=128 In-sequence signaling, timed break sent in sequence with transmitted data CONNECTION FAILURE CODES Type: Register Format AT [cmds] S86? [cmds] Description: Reports codes which correspond to the possible causes of a connection failure Value Meaning 0 Normal hang up 4 Carrier signal lost 5 No error-control detected for remote modem during feature negotiation 6 Remote modem failed to respond to feature negotiation 7 Local modem is asynchronous-only, remote modem is synchronous-only 8 No common framing technique found 9 No common protocol found 10 Remote modem sent erroneous feature negotiation message 11 Remote modem failed to send synchronous information 12 No failure - remote modem disconnected normally 13 Remote modem failed to respond after 10 re-transmissions same message 14 Violation of negotiated protocol caused failure DCE LINE SPEED Type: Register Format AT [cmds] S37=n [cmds] Description: Sets the maximum allowable data exchange rate attempted during handshake process. Command Function S37=0 Speed of last connection S37=1 300bps S37=2 300bps S37=3 300bps S37=4 Reserved S37=5 1200bps S37=6 2400bps S37=7 75bps send, 1200bps receive S37=8 4800bps S37=9 9600bps S37=10 12.0Kbps S37=11 14.4Kbps S37=12 7200bps ERROR CORRECTION/COMPRESSION Type: Register Format: AT [cmds] S46=n [cmds] Description: Selects active error correction and compression protocols Command Function S46=136 LAP-M only, no compression S46=138 LAP-M with V.42bis data compression ERROR CORRECTION NEGOTIATION Type: Register Format AT [cmds] S36=n [cmds] Description: Selects the action of the modem if it fails to connect with the error-correction protocol set in &Q. Command Function S36=0 Hang up S36=3 Attempt a buffered connection S36=4 Attempt a connection at MNP2-4; if that fails, hang up. S36=7 Attempt a connection at MNP2-4; if that fails, attempt a buffered connection. EXTENDED RESULT CODES Type: Register Format AT [cmds] S95=n [cmds] Unit: Bit-mapped Description: Reports result codes Bit Value Function 0 0 CONNECT result code reports DTE speed. 1 CONNECT result code reports line speed instead DTE speed. 1 0 Verbose CONNECT result codes display DTE or line speed only. 1 Adds "/ARQ" to all verbose CONNECT result codes except "NONE." 2 0 CARRIER result codes disabled. 1 CARRIER result codes enabled. 3 0 PROTOCOL result codes disabled. 1 PROTOCOL result codes enabled. 4 0 Reserved 5 0 COMPRESSION result codes disabled. 1 COMPRESSION result codes enabled. FEATURE NEGOTIATION OPTIONS Type: Register Format: AT [cmds] S48=n [cmds] Description: Selects active error correction and compression protocols Command Function S48=0 Detection negotiation disabled, XID negotiation disabled S48=7 Detection negotiation and XID negotiation enabled S48=128 Fall-back to options set in S36 FLOW CONTROL Type: Register Format AT [cmds] S39? [cmds] Description: Displays the current flow control Value Meaning 0 Flow control disabled 3 RTS/CTS flow control enabled 4 XON/XOFF flow control enabled 5 Transparent XON/XOFF flow control enabled 6 Hardware and software flow control enabled