MULTI-TECH SYSTEMS, INC. ======================== MT5600DSVD Card Type Modem Chip Set Unidentified I/O Options 25-pin serial port, power, line in, line out, microphone in, speaker jack Maximum Modem Rate 56Kbps Maximum Fax Rate 14.4Kbps Data Modulation Bell 103/212A Protocol ITU-T V.22, V.22bis, V.32ter, V.32bis, V.34, K56flex Fax Modulation ITU-T V.17, V.27ter, V.29 Protocol Error MNP5, V.42, V.42bis Correction/Compression Fax Class Unidentified Data Bus External +------------------------------------------------------------+ | CONNECTIONS | |------------------------------------------------------------| | Function | Label | Function | Label | |------------------------------------------------------------| | Line in (RJ-11) | CN1 | Microphone in | CN5 | |---------------------------+---------+---------------+------| | Line out (RJ-11) | CN2 | Speaker jack | CN6 | |---------------------------+---------+---------------+------| | 25-pin serial port | CN3 | Power switch | SW1 | |---------------------------+---------+---------------+------| | Power jack | CN4 | | | +------------------------------------------------------------+ +------------------------------------------------------------+ | USER CONFIGURABLE SETTINGS | |------------------------------------------------------------| | Function | Label | Position | |----------------------------------------+-------+-----------| | i Stereo speaker mode enabled | J10 | Closed | |----------------------------------------+-------+-----------| | Mono speaker mode enabled | J10 | Open | +------------------------------------------------------------+ +------------------------------------------------------------+ | DIAGNOSTIC LED(S) | |------------------------------------------------------------| | LED | Color | Status | Condition | |-----+----------------+----------+--------------------------| | TD | Unidentified | Blinking | Modem transmitting data | |-----+----------------+----------+--------------------------| | TD | Unidentified | Off | Modem not transmitting | | | | | data | |-----+----------------+----------+--------------------------| | RD | Unidentified | Blinking | Modem is receiving data | |-----+----------------+----------+--------------------------| | RD | Unidentified | Off | Modem is not receiving | | | | | data | |-----+----------------+----------+--------------------------| | CD | Unidentified | On | Carrier signal detected | |-----+----------------+----------+--------------------------| | CD | Unidentified | Off | Carrier signal not | | | | | detected | |-----+----------------+----------+--------------------------| | 56 | Unidentified | On | Modem connected in | | | | | K56flex or V.PCM mode | |-----+----------------+----------+--------------------------| | 56 | Unidentified | Off | Modem is not connected | | | | | in K56flex or V.PCM mode | |-----+----------------+----------+--------------------------| | 33 | Unidentified | On | Modem connected in V.34 | | | | | mode at speeds up to | | | | | 33.6Kbps | |-----+----------------+----------+--------------------------| | 33 | Unidentified | Off | Modem is not connected | | | | | in V.34 mode at speeds | | | | | up to 33.6Kbps | |-----+----------------+----------+--------------------------| | 14 | Unidentified | On | Modem connected in | | | | | V.32bis mode at 14.4Kbps | |-----+----------------+----------+--------------------------| | 14 | Unidentified | Off | Modem is not connected | | | | | in V.32bis mode at | | | | | 14.4Kbps | |-----+----------------+----------+--------------------------| | OH | Unidentified | On | Modem is on-hook | |-----+----------------+----------+--------------------------| | OH | Unidentified | Off | Modem is off-hook | |-----+----------------+----------+--------------------------| | TR | Unidentified | On | DTR signal is high | |-----+----------------+----------+--------------------------| | TR | Unidentified | Off | DTR signal is low | |-----+----------------+----------+--------------------------| | EC | Unidentified | On | Modem is set for V.42 | | | | | error compression | |-----+----------------+----------+--------------------------| | EC | Unidentified | Off | Modem is not set for | | | | | V.42 error compression | |-----+----------------+----------+--------------------------| | EC | Unidentified | Blinking | Data compression enabled | |-----+----------------+----------+--------------------------| | FX | Unidentified | On | Modem is in Fax mode | |-----+----------------+----------+--------------------------| | FX | Unidentified | Off | Modem is not in Fax mode | +------------------------------------------------------------+ +------------------------------------------------------------+ | SUPPORTED COMMAND SET | |------------------------------------------------------------| | Basic AT Commands | |------------------------------------------------------------| | AT, '+++', A/ | |------------------------------------------------------------| | A, B, E, H, M, O, P, Q, T, V, W, X, Y, Z | |------------------------------------------------------------| | &C, &F, &G, &T, &W, &Y, &Z | |------------------------------------------------------------| | Extended AT Commands | |------------------------------------------------------------| | \A, \B, \J, \K, \N, \V | |------------------------------------------------------------| | %C, %E, %L, %Q | |------------------------------------------------------------| | Special Commands | |------------------------------------------------------------| | -K, #CID | |------------------------------------------------------------| | S Registers | |------------------------------------------------------------| | S0, S1, S2, S3, S4, S5, S6 S7, S8, S9, S10, S11, S12, S18, | | S24, S25, S29, S32, S33, S38 | |------------------------------------------------------------| | Voice Commands | |------------------------------------------------------------| | #CLS, #MDL?, #MFR?, #REV? | |------------------------------------------------------------| | 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. Handshake | | | begins at line speed designated by the S37 | | | register. If S37=0 handshake follows | | | interface speed | |--------------+---------------------------------------------| | i N1 | Auto-mode detection enabled. Handshake | | | begins at line speed designated by the S37 | | | register. If S37=0 handshake at highest | | | possible speed with fallback to lower speed | | | if necessary | +------------------------------------------------------------+ +------------------------------------------------------------+ | 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. | |--------------+---------------------------------------------| | i &Q5 | Error correction mode | |--------------+---------------------------------------------| | &Q6 | Buffered asynchronous mode | +------------------------------------------------------------+ +------------------------------------------------------------+ | CONFIGURATION PROFILES & CALL STATISTICS | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | AT [cmds] &V [cmds] | |--------------+---------------------------------------------| | Description: | Displays active and stored configuration | | | profiles & statistics for last connection | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | &V0 | Displays the active configuration, the two | | | stored user profiles, and the first four | | | phone numbers | |--------------+---------------------------------------------| | &V1 | Displays statistics for last connection | +------------------------------------------------------------+ +------------------------------------------------------------+ | 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 | +------------------------------------------------------------+ +------------------------------------------------------------+ | 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 | |------------------------------------------------------------| | &Q Setting | &D0 | &D1 | &D2 | &D3 | |------------------+----------+----------+---------+---------| | &Q0, &Q5, &Q6 | Command | Command | Command | Command | | | 0 | 1 | 2 | 4 | |------------------+----------+----------+---------+---------| | &Q1, &Q4 | Command | Command | Command | Command | | | 3 | 1 | 2 | 2 | |------------------+----------+----------+---------+---------| | &Q2, &Q3 | Command | Command | Command | Command | | | 2 | 2 | 2 | 2 | |------------------------------------------------------------| | Command | Function | |---------------+--------------------------------------------| | Command 0 | Modem does not respond to DTR | |---------------+--------------------------------------------| | Command 1 | Modem goes to command mode after DTR goes | | | is off | |---------------+--------------------------------------------| | Command 2 | Modem goes to command mode and disconnects | | | (hangs up) after DTR goes off; Auto-Answer | | | is disabled. | |---------------+--------------------------------------------| | Command 3 | Modem goes to command mode and disconnects | | | (hangs up) after DTR goes off; Auto-Answer | | | is not disabled | |---------------+--------------------------------------------| | Command 4 | 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 | |--------------+---------------------------------------------| | DT | Tone dialing enabled/Pulse dialing disabled | |--------------+---------------------------------------------| | 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 quiet 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; | Modem returned to idle state after dialing. | | | The semicolon can only be placed at the end | | | of the dial command. | |--------------+---------------------------------------------| | D$ | Calling card "Bong" detection enabled | |--------------+---------------------------------------------| | D^ | Data calling tone transmission disabled | +------------------------------------------------------------+ +------------------------------------------------------------+ | 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 | Load factory configuration 0 | |--------------+---------------------------------------------| | &F1 | Load factory configuration 1 | +------------------------------------------------------------+ +------------------------------------------------------------+ | 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 | |--------------+---------------------------------------------| | &K5 | Transparent XON/XOFF flow control enabled | |--------------+---------------------------------------------| | &K6 | Both RTS/CTS & XON/XOFF flow control | | | 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) | +------------------------------------------------------------+ +------------------------------------------------------------+ | REPORT INFORMATION | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | AT [cmds] In [cmds] | |--------------+---------------------------------------------| | Description: | Displays information requested | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | I0 | Reports default speed and controller | | | firmware code | |--------------+---------------------------------------------| | I1 | Reports ROM checksum | |--------------+---------------------------------------------| | I2 | Tests and reports ROM checksum | |--------------+---------------------------------------------| | I3 | Reports default speed and controller | | | firmware code | |--------------+---------------------------------------------| | I4 | Reports OEM identifier string in either | | | binary or ASCII format | |--------------+---------------------------------------------| | I5 | Reports country code | |--------------+---------------------------------------------| | I6 | Reports data pump model and internal code | |--------------+---------------------------------------------| | I7 | Reports country code | +------------------------------------------------------------+ +------------------------------------------------------------+ | 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 CARRIER | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] Cn [cmds] | |--------------+---------------------------------------------| | Description: | Controls the transmit carrier switching | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | C1 | Transmit carrier enabled | +------------------------------------------------------------+ Extended AT Commands +------------------------------------------------------------+ | FLOW CONTROL | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] \Gn [cmds] | |--------------+---------------------------------------------| | Description: | Command nonfunctional; for compatibility | | | purposes only | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | \G0 | Returns OK for backward compatibility | +------------------------------------------------------------+ +------------------------------------------------------------+ | PCM CODE SELECTION | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] %Un [cmds] | |--------------+---------------------------------------------| | Description: | Determines the PCM code type for 56K | | | modulation | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | i %U0 | m -law encoding enabled (North America & | | | Japan) | |--------------+---------------------------------------------| | %U1 | A -law encoding enabled (Europe) | +------------------------------------------------------------+ SPECIAL COMMANDS +------------------------------------------------------------+ | DISTINCTIVE RING | |------------------------------------------------------------| | Type: | Immediate | |--------------+---------------------------------------------| | Format: | AT [cmds] -SDR=n [cmds] | |--------------+---------------------------------------------| | Description: | Selects the distinctive ring settings | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | -SDR=0 | Distinctive ring disabled | |--------------+---------------------------------------------| | -SDR=1 | Type 1 enabled | |--------------+---------------------------------------------| | -SDR=2 | Type 2 enabled | |--------------+---------------------------------------------| | -SDR=3 | Type 1 and 2 enabled | |--------------+---------------------------------------------| | -SDR=4 | Type 3 enabled | |--------------+---------------------------------------------| | -SDR=5 | Type 1 and 3 enabled | |--------------+---------------------------------------------| | -SDR=6 | Type 2 and 3 enabled | |--------------+---------------------------------------------| | -SDR=7 | Type 1, 2, and 3 enabled | +------------------------------------------------------------+ +------------------------------------------------------------+ | MODULATION SELECTION | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] +MS=x,y,z,a [cmds] | |--------------+---------------------------------------------| | Description: | Sets options for active protocol; the | | | transfer rates specified by z and a must be | | | valid for the protocol selected. +MS? | | | queries setting | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | x=0 | V.21 | |--------------+---------------------------------------------| | x=1 | V.22 | |--------------+---------------------------------------------| | x=2 | V.22bis | |--------------+---------------------------------------------| | x=3 | V.23 | |--------------+---------------------------------------------| | x=9 | V.32 | |--------------+---------------------------------------------| | x=10 | V.32bis | |--------------+---------------------------------------------| | x=11 | V.34 | |--------------+---------------------------------------------| | i x=12 | V.90, fallback to K56flex. .V.34 . | | | .V.32bis, etc.. | |--------------+---------------------------------------------| | x=13 | K56flex, fallback to V.90. .V.34. .V.32bis, | | | etc.. | |--------------+---------------------------------------------| | x=64 | Bell 103 | |--------------+---------------------------------------------| | x=69 | Bell 212A | +------------------------------------------------------------+ VOICE COMMANDS +------------------------------------------------------------+ | DATA/DSVD MODE | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] -SMS=n [cmds] | |--------------+---------------------------------------------| | Description: | Selects data or DSVD mode | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | i -SMS=0 | Data mode | |--------------+---------------------------------------------| | -SMS=1 | DSVD mode | |--------------+---------------------------------------------| | -SMS=3 | Automatic mode selection | +------------------------------------------------------------+ +------------------------------------------------------------+ | DSVD MODE | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] -SSE=n [cmds] | |--------------+---------------------------------------------| | Description: | Select whether the modem will use DSVD | | | mode. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | i -SSE=0 | DSVD mode disabled. | |--------------+---------------------------------------------| | -SSE=1 | DSVD mode enabled. | +------------------------------------------------------------+ +------------------------------------------------------------+ | VOICE DEVICE | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] #VLS=n [cmds] | |--------------+---------------------------------------------| | Description: | Selects the I/O device for the DSP chip. | |--------------+---------------------------------------------| | Command | Function | |--------------+---------------------------------------------| | i #VLS=5 | Headset used for voice I/O. | |--------------+---------------------------------------------| | #VLS=6 | Speakerphone used for voice I/O. | +------------------------------------------------------------+ +------------------------------------------------------------+ | VOICE - LOCAL SERIAL PORT SPEED | |------------------------------------------------------------| | Type: | Configuration | |--------------+---------------------------------------------| | Format: | AT [cmds] #BDR=n [cmds] | |--------------+---------------------------------------------| | Range: | 0-48 | |--------------+---------------------------------------------| | Unit: | 2400bps | |--------------+---------------------------------------------| | Description: | Sets the speed of the local serial port | | | when in voice mode. | +------------------------------------------------------------+ S(STATUS) -REGISTERS +------------------------------------------------------------+ | 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 | |--------------+---------------------------------------------| | 9 | No common protocol found | |--------------+---------------------------------------------| | 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. | | | For compatibility only, use +MS to set line | | | speed | +------------------------------------------------------------+ +------------------------------------------------------------+ | ERROR CORRECTION NEGOTIATION | |------------------------------------------------------------| | Type: | Register | |------------------------+-----------------------------------| | Format | AT [cmds] S36=n [cmds] | |------------------------+-----------------------------------| | Description: | Selects the action of the modem | | | if it fails to connect when error | | | control is selected. | |------------------------------------------------------------| | Command | S48=7 | S48=128 | |-----------+-----------------------+------------------------| | S36=0 | LAPM or hang-up | Not used | |-----------+-----------------------+------------------------| | S36=1 | LAPM or Asynchronous | Asynchronous | |-----------+-----------------------+------------------------| | S36=2 | LAPM or hang-up | Not used | |-----------+-----------------------+------------------------| | S36=3 | LAPM or Asynchronous | Asynchronous | |-----------+-----------------------+------------------------| | S36=4 | LAPM, MNP, or hang-up | MNP or hang-up | |-----------+-----------------------+------------------------| | S36=5 | LAPM, MNP, or | MNP or Asynchronous | | | Asynchronous | | |-----------+-----------------------+------------------------| | S36=6 | LAPM, MNP, or hang-up | MNP or hang-up | |-----------+-----------------------+------------------------| | S36=7 | LAPM, MNP, or | MNP or Asynchronous | | | Asynchronous | | +------------------------------------------------------------+ +------------------------------------------------------------+ | ERROR CORRECTION/COMPRESSION | |------------------------------------------------------------| | Type: | Register | |------------------------------------------------------------| | Format: | AT [cmds] S46=n [cmds] | |--------------+---------------------------------------------| | Description: | Selects active error correction and | | | compression protocols | |------------------------------------------------------------| | Command | Function | |---------------+--------------------------------------------| | S46=136 | Error correction only, no compression | |---------------+--------------------------------------------| | S46=138 | Error correction with V.42bis data | | | compression | +------------------------------------------------------------+ +------------------------------------------------------------+ | FEATURE NEGOTIATION | |------------------------------------------------------------| | Type: | Register | |------------------------------------------------------------| | Format: | AT [cmds] S48=n [cmds] | |--------------+---------------------------------------------| | Description: | Selects active error correction and | | | compression protocols. See S36, error | | | correction negotiation table | |------------------------------------------------------------| | Command | Function | |-----------------+------------------------------------------| | S48=0 | Detection negotiation disabled | |-----------------+------------------------------------------| | S48=7 | Detection negotiation enabled | |-----------------+------------------------------------------| | S48=128 | Fall-back to options set in S36 | +------------------------------------------------------------+ +------------------------------------------------------------+ | INACTIVITY TIMER | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format | AT [cmds] S30=n [cmds] | |--------------+---------------------------------------------| | Range: | 0-255 | |--------------+---------------------------------------------| | Unit: | 10 ms | |--------------+---------------------------------------------| | Description: | Maximum duration of DTE and DCE inactivity | | | allowed prior to initiating hang-up | | | process. | |------------------------------------------------------------| | Note: S30=0 disables the timer and allows indefinite | | inactivity. | +------------------------------------------------------------+ +------------------------------------------------------------+ | V.25 CALLING TONE | |------------------------------------------------------------| | Type: | Register | |--------------+---------------------------------------------| | Format | AT [cmds] S35=n [cmds] | |--------------+---------------------------------------------| | Range: | 0-1 | |--------------+---------------------------------------------| | Unit: | Decimal | |--------------+---------------------------------------------| | Description: | Enables V.25 data calling tone, which | | | allows remote data/fax/voice discrimination | |------------------------------------------------------------| | Note: S35=0 disables V.25 data calling tone. | +------------------------------------------------------------+