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       # LASAT COMMUNICATIONS A/S
       
          SAFIRE 288 VOICE
       
          Card Type              Modem (synchronous/asynchronous)        
          Chipset                Unidentified                            
          I/O Options            Voice                                   
          Maximum Data Rate      33.6Kbps                                
          Maximum Fax Rate       14.4Kbps                                
          Data Modulation        Bell 103A/212A                          
                                                                         
                                 ITU-T V.21, V.22, V.22bis, V.23, V.32,  
                                 V.32bis, V.34                           
                                                                         
                                 Rockwell V.FC                           
          Fax Modulation         ITU-T V.17                              
          Error                  MNP5, MNP10, V.42, V.42bis              
          Correction/Compression 
          Fax Class              Class I & II                            
          Data Bus               Serial                                  
       
   IMG IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |     Function      | Label |        Function        | Label |
          |-------------------+-------+------------------------+-------|
          | DC power in       |  CN1  | Telephone line out     |  CN3  |
          |-------------------+-------+------------------------+-------|
          | Serial port       |  CN2  |                        |       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DIAGNOSTIC LED(S)                      |
          |------------------------------------------------------------|
          | LED  | Color |  Status  |            Condition             |
          |------+-------+----------+----------------------------------|
          |  ON  |  Red  |    On    |           Power is on            |
          |------+-------+----------+----------------------------------|
          |  ON  |  Red  |   Off    |           Power is off           |
          |------+-------+----------+----------------------------------|
          |  TR  |  Red  |    On    |        DTR signal is high        |
          |------+-------+----------+----------------------------------|
          |  TR  |  Red  |   Off    |        DTR signal is low         |
          |------+-------+----------+----------------------------------|
          |  CD  |  Red  |    On    |     Carrier signal detected      |
          |------+-------+----------+----------------------------------|
          |  CD  |  Red  |   Off    |   Carrier signal not detected    |
          |------+-------+----------+----------------------------------|
          |  CD  |  Red  | Blinking |         Phone is ringing         |
          |------+-------+----------+----------------------------------|
          | COMP |  Red  |    On    |   Modem is connected with data   |
          |      |       |          |           compression            |
          |------+-------+----------+----------------------------------|
          | COMP |  Red  |   Off    | Modem is not connected with data |
          |      |       |          |           compression            |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                SUPPORTED STANDARD COMMANDS                 |
          |------------------------------------------------------------|
          |                     Basic AT Commands                      |
          |------------------------------------------------------------|
          | +++, ‘comma’, A/                                           |
          |------------------------------------------------------------|
          | A, B, E, H, L, M, N, O, P, Q, T, V, W, X, Y, Z             |
          |------------------------------------------------------------|
          | &C, &D, &F, &G, &K, &P, &Q, &R, &S, &T, &V, &W, &Y, &Z     |
          |------------------------------------------------------------|
          |                    Extended AT Commands                    |
          |------------------------------------------------------------|
          | \A, \B, \G, \K, \N                                         |
          |------------------------------------------------------------|
          | %C, %E, %L, %Q                                             |
          |------------------------------------------------------------|
          |                    Special AT Commands                     |
          |------------------------------------------------------------|
          | :E, *H, -K, )M, @M, +MS, -Q                                |
          |------------------------------------------------------------|
          |                        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, S29, S30, S31, S32, S33, S36, S38, S39, S46,     |
          | S48, S82, S86, S91, S92, S95, S201                         |
          |------------------------------------------------------------|
          |      Note: See MHI help file for complete information.     |
          +------------------------------------------------------------+
       
                            Proprietary AT Command Set
       
          +------------------------------------------------------------+
          |                      AUTOSYNC OPTIONS                      |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format       | AT [cmds] S19=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Default:     | 26                                          |
          |--------------+---------------------------------------------|
          | Range:       | 0 - 30                                      |
          |--------------+---------------------------------------------|
          | Description: | Controls autosync protocol, HDLC address    |
          |              | detection, bit coding, and HDLC idle.       |
          |--------------+---------------------------------------------|
          | Bit  | Value |                  Function                   |
          |------+-------+---------------------------------------------|
          |  0   |     0 | Not used                                    |
          |------+-------+---------------------------------------------|
          |  1   |     0 | Binary synchronous protocol used.           |
          |      |       |                                             |
          |      |   í 1 | HDLC protocol used.                         |
          |------+-------+---------------------------------------------|
          |  2   |   í 0 | HDLC address detect disabled.               |
          |      |       |                                             |
          |      |     1 | HDLC address detect enabled.                |
          |------+-------+---------------------------------------------|
          |  3   |     0 | NRZI bit coding used.                       |
          |      |       |                                             |
          |      |   í 1 | NRZ bit coding used.                        |
          |------+-------+---------------------------------------------|
          |  4   |     0 | HDLC idle sends MARK.                       |
          |      |       |                                             |
          |      |   í 1 | HDLC idle sends FLAG or SYNC.               |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   AUTOSYNC HDLC ADDRESS                    |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S20=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Default:     | 0                                           |
          |--------------+---------------------------------------------|
          | Range:       | 0-255                                       |
          |--------------+---------------------------------------------|
          | Unit:        | Unidentified                                |
          |--------------+---------------------------------------------|
          | Description: | Sets the HDLC address and binary            |
          |              | synchronous character.                      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  BIT-MAPPED REGISTER S28                   |
          |------------------------------------------------------------|
          | Format       | AT [cmds] S28=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Default:     | 0                                           |
          |--------------+---------------------------------------------|
          | Range:       | 0 - 153                                     |
          |--------------+---------------------------------------------|
          | Description: | Controls V.23 split speed, half duplex,     |
          |              | pulse dialing, and MNP10 link negotiation.  |
          |--------------+---------------------------------------------|
          | Bit  | Value |                  Function                   |
          |------+-------+---------------------------------------------|
          |  0   |   í 0 | V.23 split speed operation disabled.        |
          |      |       |                                             |
          |      |     1 | V.23 split speed operation enabled.         |
          |------+-------+---------------------------------------------|
          | 2, 1 |    00 | Not used.                                   |
          |------+-------+---------------------------------------------|
          | 4, 3 |  í 00 | 39ms make/61ms break at 10pps.              |
          |      |       |                                             |
          |      |    01 | 33ms make/67ms break at 10pps.              |
          |      |       |                                             |
          |      |    10 | 39ms make/61ms break at 20pps.              |
          |      |       |                                             |
          |      |    11 | 33ms make/67ms break at 20pps.              |
          |------+-------+---------------------------------------------|
          |  5   |     0 | Not used.                                   |
          |------+-------+---------------------------------------------|
          | 7, 6 |  í 00 | Link will be negotiated at highest possible |
          |      |       | speed.                                      |
          |      |    01 |                                             |
          |      |       | Link will be negotiated at 1200bps.         |
          |      |    10 |                                             |
          |      |       | Link will be negotiated at 4800bps.         |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  BIT-MAPPED REGISTER S40                   |
          |------------------------------------------------------------|
          | Format       | AT [cmds] S40=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Default:     | 107                                         |
          |--------------+---------------------------------------------|
          | Range:       | 0 - 255                                     |
          |--------------+---------------------------------------------|
          | Description: | Controls power level and break handling;    |
          |              | selects MNP extended services, link         |
          |              | negotiation, and block size.                |
          |--------------+---------------------------------------------|
          | Bit  | Value |                  Function                   |
          |------+-------+---------------------------------------------|
          |  0   |     0 | MNP10 disabled.                             |
          |      |       |                                             |
          |      |   í 1 | MNP10 enabled.                              |
          |------+-------+---------------------------------------------|
          |  1   |     0 | MNP10 at 2400 and 1200bps disabled.         |
          |      |       |                                             |
          |      |   í 1 | MNP10 at 2400 and 1200bps enabled.          |
          |------+-------+---------------------------------------------|
          |  2   |   í 0 | Power level adjustment enabled.             |
          |      |       |                                             |
          |      |     1 | Power level adjustment disabled.            |
          |------+-------+---------------------------------------------|
          |  5,  |   000 | \K0 set.                                    |
          | 4, 3 |       |                                             |
          |      |   001 | \K1 set.                                    |
          |      |       |                                             |
          |      |   010 | \K2 set.                                    |
          |      |       |                                             |
          |      |   011 | \K3 set.                                    |
          |      |       |                                             |
          |      |   100 | \K4 set.                                    |
          |      |       |                                             |
          |      | í 101 | \K5 set.                                    |
          |------+-------+---------------------------------------------|
          | 7, 6 |    00 | MNP block size is 64 characters.            |
          |      |       |                                             |
          |      |  í 01 | MNP block size is 128 characters.           |
          |      |       |                                             |
          |      |    10 | MNP block size is 192 characters.           |
          |      |       |                                             |
          |      |    11 | MNP block size is 256 characters.           |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  BIT-MAPPED REGISTER S41                   |
          |------------------------------------------------------------|
          | Format       | AT [cmds] S41=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Default:     | 3                                           |
          |--------------+---------------------------------------------|
          | Range:       | 0 - 91                                      |
          |--------------+---------------------------------------------|
          | Description: | Selects compression, auto-retrain and       |
          |              | auto-fallback/fall-forward, flow control,   |
          |              | and MNP mode.                               |
          |--------------+---------------------------------------------|
          | Note:        | Be aware that bit 6 is out of order.        |
          |--------------+---------------------------------------------|
          | Bit  | Value |                  Function                   |
          |------+-------+---------------------------------------------|
          | 1, 0 |    00 | Data compression disabled.                  |
          |      |       |                                             |
          |      |    01 | MNP5 enabled.                               |
          |      |       |                                             |
          |      |    10 | V.42bis enabled.                            |
          |      |       |                                             |
          |      |  í 11 | MNP5 and V.42bis enabled.                   |
          |------+-------+---------------------------------------------|
          | 6, 2 |  í 00 | Auto-retrain disabled.                      |
          |      |       |                                             |
          |      |    01 | Auto-retrain enabled.                       |
          |      |       |                                             |
          |      |    10 | Auto-fallback/fall-forward enabled.         |
          |------+-------+---------------------------------------------|
          |  3   |   í 0 | Flow control disabled.                      |
          |      |       |                                             |
          |      |     1 | Flow control enabled.                       |
          |------+-------+---------------------------------------------|
          |  4   |   í 0 | Stream mode for MNP.                        |
          |      |       |                                             |
          |      |     1 | Block mode for MNP.                         |
          |------+-------+---------------------------------------------|
          |  5   |     0 | Not used.                                   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     CALLBACK PASSWORD                      |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] *Pn:xxxxx:<#>                     |
          |--------------+---------------------------------------------|
          | Description: | Changes connection password number n. n     |
          |              | must be between 0 and 4. The password must  |
          |              | be between 6 and 12 characters. If no       |
          |              | callback number is supplied, the modem will |
          |              | check for a password but will not perform a |
          |              | callback.                                   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                        COUNTRY CODE                        |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] *NCn [cmds]                       |
          |--------------+---------------------------------------------|
          | Description: | Sets the factory defaults according to the  |
          |              | country specified. The next power-up or ATZ |
          |              | command will reset the modem to the         |
          |              | appropriate defaults.                       |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |     *NC1     | Set country code for Austria.               |
          |--------------+---------------------------------------------|
          |     *NC2     | Set country code for Belgium.               |
          |--------------+---------------------------------------------|
          |     *NC3     | Set country code for Denmark.               |
          |--------------+---------------------------------------------|
          |     *NC4     | Set country code for Finland.               |
          |--------------+---------------------------------------------|
          |     *NC5     | Set country code for France.                |
          |--------------+---------------------------------------------|
          |     *NC6     | Set country code for Germany.               |
          |--------------+---------------------------------------------|
          |     *NC7     | Set country code for Ireland.               |
          |--------------+---------------------------------------------|
          |     *NC8     | Set country code for Italy.                 |
          |--------------+---------------------------------------------|
          |     *NC9     | Set country code for Luxembourg.            |
          |--------------+---------------------------------------------|
          |    *NC10     | Set country code for the Netherlands.       |
          |--------------+---------------------------------------------|
          |    *NC11     | Set country code for Norway.                |
          |--------------+---------------------------------------------|
          |    *NC12     | Set country code for Portugal.              |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    COUNTRY CODE (CON’T)                    |
          |------------------------------------------------------------|
          |  Command   |                   Function                    |
          |------------+-----------------------------------------------|
          |   *NC13    | Set country code for Spain.                   |
          |------------+-----------------------------------------------|
          |   *NC14    | Set country code for Sweden.                  |
          |------------+-----------------------------------------------|
          |   *NC15    | Set country code for Switzerland.             |
          |------------+-----------------------------------------------|
          |   *NC16    | Set country code for Great Britain.           |
          |------------+-----------------------------------------------|
          |   *NC20    | Set country code for Canada.                  |
          |------------+-----------------------------------------------|
          |   *NC21    | Set country code for Mexico.                  |
          |------------+-----------------------------------------------|
          |   *NC22    | Set country code for the United States.       |
          |------------+-----------------------------------------------|
          |   *NC40    | Set country code for Australia.               |
          |------------+-----------------------------------------------|
          |   *NC43    | Set country code for Japan.                   |
          |------------+-----------------------------------------------|
          |   *NC47    | Set country code for Singapore.               |
          |------------+-----------------------------------------------|
          |   *NC48    | Set country code for New Zealand.             |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                            DIAL                            |
          |------------------------------------------------------------|
          | Type:        | Immediate                                   |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] D<#> [cmds]                       |
          |--------------+---------------------------------------------|
          | Description: | Dials the telephone number indicated        |
          |              | according to any modifiers included in the  |
          |              | string.                                     |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |      DJ      | MNP10 link will be negotiated at 1200bps    |
          |              | for this call.                              |
          |--------------+---------------------------------------------|
          |      DK      | MNP10 power level adjustment enabled for    |
          |              | this call.                                  |
          |--------------+---------------------------------------------|
          |      DL      | Re-dial last number.                        |
          |--------------+---------------------------------------------|
          |      DP      | Pulse dialing enabled.                      |
          |--------------+---------------------------------------------|
          |     DS=n     | Dial stored telephone number n.             |
          |--------------+---------------------------------------------|
          |      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 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^      | Calling tone disabled for this call.        |
          |--------------+---------------------------------------------|
          |      D;      | Modem returned to idle state after dialing. |
          |              | The semicolon can only be placed at the end |
          |              | of the dial command.                        |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 DISPLAY BLACKLIST NUMBERS                  |
          |------------------------------------------------------------|
          | Type:        | Immediate                                   |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] *B [cmds]                         |
          |--------------+---------------------------------------------|
          | Description: | Displays the list of all the numbers on the |
          |              | blacklist and their statuses.               |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  DISPLAY DELAYED NUMBERS                   |
          |------------------------------------------------------------|
          | Type:        | Immediate                                   |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] *D [cmds]                         |
          |--------------+---------------------------------------------|
          | Description: | Displays the list of all delayed numbers    |
          |              | and their statuses.                         |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    DISPLAY INFORMATION                     |
          |------------------------------------------------------------|
          | Type:        | Immediate                                   |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] In [cmds]                         |
          |--------------+---------------------------------------------|
          | Description: | Displays information requested about the    |
          |              | modem.                                      |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |      I0      | Displays product identification code.       |
          |--------------+---------------------------------------------|
          |      I1      | Displays ROM checksum.                      |
          |--------------+---------------------------------------------|
          |      I2      | Tests and reports ROM checksum.             |
          |--------------+---------------------------------------------|
          |      I3      | Displays firmware revision.                 |
          |--------------+---------------------------------------------|
          |      I4      | Displays production identification.         |
          |--------------+---------------------------------------------|
          |      I5      | Displays country code.                      |
          |--------------+---------------------------------------------|
          |      I6      | Displays production identification.         |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   DISPLAY STORED NUMBERS                   |
          |------------------------------------------------------------|
          | Type:        | Immediate                                   |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] \F [cmds]                         |
          |--------------+---------------------------------------------|
          | Description: | Displays all stored telephone numbers.      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     FIRMWARE DOWNLOAD                      |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] ** [cmds]                         |
          |--------------+---------------------------------------------|
          | Description: | Downloads new code to the firmware flash    |
          |              | memory at 57.6Kbps.                         |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                         LINE SPEED                         |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S37=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Description: | Sets the maximum allowable data exchange    |
          |              | rate attempted during the handshaking       |
          |              | process.                                    |
          |--------------+---------------------------------------------|
          |  í Command   |                  Function                   |
          |--------------+---------------------------------------------|
          |    S37=0     | Attempt to connect at fastest common speed. |
          |--------------+---------------------------------------------|
          |    S37=1     | Set speed to 300bps.                        |
          |--------------+---------------------------------------------|
          |    S37=2     | Set speed to 300bps.                        |
          |--------------+---------------------------------------------|
          |    S37=3     | Set speed to 300bps.                        |
          |--------------+---------------------------------------------|
          |    S37=5     | Set speed to 1200bps.                       |
          |--------------+---------------------------------------------|
          |    S37=6     | Set speed to 2400bps.                       |
          |--------------+---------------------------------------------|
          |    S37=7     | Attempt to connect with V.23.               |
          |--------------+---------------------------------------------|
          |    S37=8     | Set speed to 4800bps.                       |
          |--------------+---------------------------------------------|
          |    S37=9     | Set speed to 9600bps.                       |
          |--------------+---------------------------------------------|
          |    S37=10    | Set speed to 12Kbps.                        |
          |--------------+---------------------------------------------|
          |    S37=11    | Set speed to 14.4Kbps.                      |
          |--------------+---------------------------------------------|
          |    S37=12    | Set speed to 7200bps.                       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                       TONE DETECTION                       |
          |------------------------------------------------------------|
          | Format:        | AT [cmds] #VTD=x,y,z [cmds]               |
          |----------------+-------------------------------------------|
          | Default:       | x,y,z 63                                  |
          |----------------+-------------------------------------------|
          | Range:         | 0 - 63                                    |
          |----------------+-------------------------------------------|
          | Description:   | Sets which tones the tone detection will  |
          |                | report.                                   |
          |----------------+-------------------------------------------|
          | Note:          | The value of x sets the tone detection    |
          |                | modes in voice transmit mode, y sets them |
          |                | in voice receive mode, and z sets them in |
          |                | voice command mode.                       |
          |------------------------------------------------------------|
          |   Bit   | Value |                 Function                 |
          |---------+-------+------------------------------------------|
          |    0    |     0 | DTMF tones are not detected.             |
          |         |       |                                          |
          |         |   í 1 | DTMF tones are detected.                 |
          |------------------------------------------------------------|
          |      1      |  0 | V.25 1300Hz calling tone is not         |
          |             |    | detected.                               |
          |             |  í |                                         |
          |             |  1 | V.25 1300Hz calling tone is detected.   |
          |-------------+----+-----------------------------------------|
          |      2      |  0 | T.30 1100Hz fax tone is not detected.   |
          |             |    |                                         |
          |             |  í | T.30 1100Hz fax tone is detected.       |
          |             |  1 |                                         |
          |-------------+----+-----------------------------------------|
          |      3      |  0 | V.25/T.30 2100Hz answer tone is not     |
          |             |    | detected.                               |
          |             |  í |                                         |
          |             |  1 | V.25/T.30 2100Hz answer tone is         |
          |             |    | detected.                               |
          |-------------+----+-----------------------------------------|
          |      4      |  0 | Bell 2225Hz answer tone is not          |
          |             |    | detected.                               |
          |             |  í |                                         |
          |             |  1 | Bell 2225Hz answer tone is detected.    |
          |-------------+----+-----------------------------------------|
          |      5      |  0 | Call progress tones are not detected.   |
          |             |    |                                         |
          |             |  í | Call progress tones are detected.       |
          |             |  1 |                                         |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               TONE GENERATOR - DIRECT ENTRY                |
          |------------------------------------------------------------|
          | Type:        | Immediate                                   |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] #VTS=[m, n, x]                    |
          |--------------+---------------------------------------------|
          | Range:       | m 200-3000, n 200-3000, x 0-255             |
          |--------------+---------------------------------------------|
          | Unit:        | m 1 Hz, n 1 Hz, x .1 second                 |
          |--------------+---------------------------------------------|
          | Description: | Generates a dual-frequency tone for         |
          |              | duration x at frequencies m and n.          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |             TONE GENERATOR - TIMED PHONE KEYS              |
          |------------------------------------------------------------|
          | Type:        | Immediate                                   |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] #VTS={a, n}                       |
          |--------------+---------------------------------------------|
          | Range:       | a 0-9, A-D, #, *; x 0-255                   |
          |--------------+---------------------------------------------|
          | Unit:        | x .1 second                                 |
          |--------------+---------------------------------------------|
          | Description: | Generates the DTMF tone for duration x for  |
          |              | the character a.                            |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                TONE GENERATOR - PHONE KEYS                 |
          |------------------------------------------------------------|
          | Type:        | Immediate                                   |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] #VTS=a                            |
          |--------------+---------------------------------------------|
          | Range:       | 0-9, A-D, #, *                              |
          |--------------+---------------------------------------------|
          | Description: | Generates the DTMF tones for the characters |
          |              | in the string for the duration set with     |
          |              | +VBT.                                       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   TONE GENERATOR LENGTH                    |
          |------------------------------------------------------------|
          | Format       | AT [cmds] #VBT=n [cmds]                     |
          |--------------+---------------------------------------------|
          | Default:     | 10                                          |
          |--------------+---------------------------------------------|
          | Range:       | 0 - 40                                      |
          |--------------+---------------------------------------------|
          | Unit:        | 0.1 second                                  |
          |--------------+---------------------------------------------|
          | Description: | Sets the length of DTMF tones that are      |
          |              | generated.                                  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     VOICE BUFFER SPACE                     |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] #VSK=n [cmds]                     |
          |--------------+---------------------------------------------|
          | Default:     | 255                                         |
          |--------------+---------------------------------------------|
          | Range:       | 0 - 255                                     |
          |--------------+---------------------------------------------|
          | Unit:        | 1 byte                                      |
          |--------------+---------------------------------------------|
          | Description: | Sets the amount of data the modem can send  |
          |              | into the buffer after the XOFF signal is    |
          |              | sent.                                       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                        VOICE DEVICE                        |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] #VLS=n [cmds]                     |
          |--------------+---------------------------------------------|
          | Description: | Selects the I/O device for the DSP chip.    |
          |--------------+---------------------------------------------|
          | Note:        | This modem may not support all options      |
          |              | listed below. The #VLS? command will        |
          |              | display the available options.              |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |   í #VLS=0   | Telephone line and handset used for voice   |
          |              | I/O.                                        |
          |--------------+---------------------------------------------|
          |    #VLS=1    | Telephone handset used for voice I/O.       |
          |--------------+---------------------------------------------|
          |    #VLS=2    | Internal speaker only used for voice I/O.   |
          |--------------+---------------------------------------------|
          |    #VLS=3    | External microphone only used for voice     |
          |              | I/O.                                        |
          |--------------+---------------------------------------------|
          |    #VLS=4    | Telephone line and handset used for voice   |
          |              | I/O; internal speaker enabled.              |
          |--------------+---------------------------------------------|
          |    #VLS=5    | Headset used for voice I/O.                 |
          |--------------+---------------------------------------------|
          |    #VLS=6    | Speakerphone used for voice I/O.            |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                VOICE - DISPLAY BUFFER SIZE                 |
          |------------------------------------------------------------|
          | Type:        | Immediate                                   |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] #VBQ? [cmds]                      |
          |--------------+---------------------------------------------|
          | Description: | Displays the size of the voice buffer.      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |              VOICE - DISPLAY COMPRESSION TYPE              |
          |------------------------------------------------------------|
          | Type:        | Immediate                                   |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] #VCI? [cmds]                      |
          |--------------+---------------------------------------------|
          | Description: | Displays the type of compression currently  |
          |              | in use.                                     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 VOICE RE-RING DETECT TIME                  |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] #VRA=n [cmds]                     |
          |--------------+---------------------------------------------|
          | Default:     | 70                                          |
          |--------------+---------------------------------------------|
          | Range:       | 0-255                                       |
          |--------------+---------------------------------------------|
          | Unit:        | 10 mS                                       |
          |--------------+---------------------------------------------|
          | Description: | Sets the maximum time the modem will wait   |
          |              | for the remote station to ring again before |
          |              | it assumes that it has gone off-hook.       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                       VOICE RECEIVE                        |
          |------------------------------------------------------------|
          | Type:        | Immediate                                   |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] #VRX                              |
          |--------------+---------------------------------------------|
          | Description: | Commands the modem to begin receiving voice |
          |              | data.                                       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   VOICE RING DETECT TIME                   |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] #VRN=n [cmds]                     |
          |--------------+---------------------------------------------|
          | Default:     | Unidentified                                |
          |--------------+---------------------------------------------|
          | Range:       | Unidentified                                |
          |--------------+---------------------------------------------|
          | Unit:        | Unidentified                                |
          |--------------+---------------------------------------------|
          | Description: | Sets the maximum time the modem will wait   |
          |              | for the remote station to ring before it    |
          |              | assumes that it went off-hook before it     |
          |              | rang.                                       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    VOICE SAMPLE QUALITY                    |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] #VBS=n [cmds]                     |
          |--------------+---------------------------------------------|
          | Description: | Selects the number of bits per sample that  |
          |              | the modem records. The #VBS? command will   |
          |              | display the available options.              |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    VOICE SAMPLING RATE                     |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] #VSR=n [cmds]                     |
          |--------------+---------------------------------------------|
          | Description: | Sets the sampling rate used when recording  |
          |              | voice signals, in Hertz. The #VSR? command  |
          |              | will display the available options.         |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                VOICE SILENCE DETECTION TIME                |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] #VSP=n [cmds]                     |
          |--------------+---------------------------------------------|
          | Default:     | Unidentified                                |
          |--------------+---------------------------------------------|
          | Range:       | 0 - 255                                     |
          |--------------+---------------------------------------------|
          | Unit:        | .1 second                                   |
          |--------------+---------------------------------------------|
          | Description: | Sets the minimum amount of silence that the |
          |              | modem will detect.                          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |             VOICE SILENCE DETECTION THRESHOLD              |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] #VSS=n [cmds]                     |
          |--------------+---------------------------------------------|
          | Description: | Sets the threshold of sensitivity that the  |
          |              | modem uses to determine silence detection.  |
          |------------------------------------------------------------|
          |    Command     |                 Function                  |
          |----------------+-------------------------------------------|
          |     #VSS=0     | Silence detection disabled.               |
          |----------------+-------------------------------------------|
          |     #VSS=1     | Minimum silence detection sensitivity.    |
          |----------------+-------------------------------------------|
          |     #VSS=2     | Standard silence detection sensitivity.   |
          |----------------+-------------------------------------------|
          |     #VSS=3     | Maximum silence detection sensitivity.    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     VOICE TIMING MARK                      |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] #VTM=n [cmds]                     |
          |--------------+---------------------------------------------|
          | Description: | Configures timing mark placement.           |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |    #VTM=0    | Timing marks disabled.                      |
          |--------------+---------------------------------------------|
          |    #VTM=1    | Timing marks enabled.                       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  VOICE TRANSMISSION LEVEL                  |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] #TL=hhhh [cmds]                   |
          |--------------+---------------------------------------------|
          | Default:     | 3FFF                                        |
          |--------------+---------------------------------------------|
          | Range:       | 0000 - 7FFF                                 |
          |--------------+---------------------------------------------|
          | Unit:        | Unidentified (hexadecimal)                  |
          |--------------+---------------------------------------------|
          | Description: | Sets the transmission level for sending     |
          |              | audio in voice mode.                        |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                       VOICE TRANSMIT                       |
          |------------------------------------------------------------|
          | Type:        | Immediate                                   |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] #VTX                              |
          |--------------+---------------------------------------------|
          | Description: | Commands the modem to begin transmitting    |
          |              | voice data.                                 |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     VOICE VOLUME LEVEL                     |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] #VGT=n [cmds]                     |
          |--------------+---------------------------------------------|
          | Description: | Sets the volume level when playing back     |
          |              | audio signals.                              |
          +------------------------------------------------------------+