URI: 
  TEXT View Source
       
       # E-TECH RESEARCH, INC.
       
          BULLET 100E (REV. 1.01)
       
          Modem Type             Data (synchronous/asynchronous)/Fax     
          Maximum Data Rate      28.8Kbps                                
          Maximum Fax Rate       14.4Kbps                                
          Data Bus               External                                
          Fax Class              Class I & II                            
          Data Modulation        Bell 103A/212A                          
          Protocol                                                       
                                 ITU-T V.21, V.22, V.22bis, V.23, V.32,  
                                 V.32bis, V.34                           
          Fax Modulation         ITU-T V.17, V.21CH2, V.27ter, V.29      
          Protocol               
          Error                  MNP5, V.42, V.42bis                     
          Correction/Compression 
       
   IMG IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |    Purpose     | Location |       Purpose       | Location |
          |----------------+----------+---------------------+----------|
          | Line out       |   CN1    | LCD control button  |   BT1    |
          |----------------+----------+---------------------+----------|
          | Line in        |   CN2    | LCD control button  |   BT2    |
          |----------------+----------+---------------------+----------|
          | Lease line     |   CN3    | LCD control button  |   BT3    |
          |----------------+----------+---------------------+----------|
          | RS-232/422     |   CN4    | LCD control button  |   BT4    |
          |----------------+----------+---------------------+----------|
          | DC power       |   CN5    | LCD control button  |   BT5    |
          |----------------+----------+---------------------+----------|
          | Power switch   |   SW1    | OK button           |   BT6    |
          |----------------+----------+---------------------+----------|
          | Volume         |    R1    | More button         |   BT7    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DIAGNOSTIC LED(S)                      |
          |------------------------------------------------------------|
          |  LED  |  Color  | Status  |           Condition            |
          |-------+---------+---------+--------------------------------|
          |  PWR  |   Red   |   On    |          Power is on           |
          |-------+---------+---------+--------------------------------|
          |  PWR  |   Red   |   Off   |          Power is off          |
          |-------+---------+---------+--------------------------------|
          |  TD   |   Red   |   On    |   Modem is transmitting data   |
          |-------+---------+---------+--------------------------------|
          |  TD   |   Red   |   Off   | Modem is not transmitting data |
          |-------+---------+---------+--------------------------------|
          |  RD   |   Red   |   On    |    Modem is receiving data     |
          |-------+---------+---------+--------------------------------|
          |  RD   |   Red   |   Off   |  Modem is not receiving data   |
          |-------+---------+---------+--------------------------------|
          |  DCD  |   Red   |   On    |    Carrier signal detected     |
          |-------+---------+---------+--------------------------------|
          |  DCD  |   Red   |   Off   |  Carrier signal not detected   |
          |-------+---------+---------+--------------------------------|
          |  OH   |   Red   |   On    |       Modem is off-hook        |
          |-------+---------+---------+--------------------------------|
          |  OH   |   Red   |   Off   |        Modem is on-hook        |
          |-------+---------+---------+--------------------------------|
          |  RTS  |   Red   |   On    |      DTE sends RTS signal      |
          |-------+---------+---------+--------------------------------|
          |  RTS  |   Red   |   Off   |  DTE does not send RTS signal  |
          |-------+---------+---------+--------------------------------|
          |  DTR  |   Red   |   On    |       DTR signal is high       |
          |-------+---------+---------+--------------------------------|
          |  DTR  |   Red   |   Off   |       DTR signal is low        |
          |-------+---------+---------+--------------------------------|
          |  AA   |   Red   |   On    |      Auto-answer enabled       |
          |-------+---------+---------+--------------------------------|
          |  AA   |   Red   |   Off   |      Auto-answer disabled      |
          +------------------------------------------------------------+
       
                            Proprietary AT Command Set
       
          +------------------------------------------------------------+
          |                        AUTO-REDIAL                         |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] $Dn [cmds]                        |
          |--------------+---------------------------------------------|
          | Example:     | AT $D0 &W<CR>                               |
          |--------------+---------------------------------------------|
          | Description: | Controls auto-redial.                       |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          | » $D0        | Auto-redial disabled.                       |
          |--------------+---------------------------------------------|
          |     $D1      | Auto-redial enabled, if remote is busy will |
          |              | try up to n times.                          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                        BUFFER SIZE                         |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] $Bn [cmds]                        |
          |--------------+---------------------------------------------|
          | Example:     | AT $B0<CR>                                  |
          |--------------+---------------------------------------------|
          | Description: | Selects the modem’s transmit/receive buffer |
          |              | size.                                       |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |     í$B0     | Normal buffer size.                         |
          |--------------+---------------------------------------------|
          |     $B1      | Small buffer size.                          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    BREAK LENGTH (LAPM)                     |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S34=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Example:     | ATS34=20<CR>                                |
          |--------------+---------------------------------------------|
          | Default:     | 35                                          |
          |--------------+---------------------------------------------|
          | Range:       | 1-255                                       |
          |--------------+---------------------------------------------|
          | Unit:        | .1 second.                                  |
          |--------------+---------------------------------------------|
          | Description: | Sets the length of breaks for LAPM          |
          |              | protocol.                                   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  CALLBACK SECURITY LEVEL                   |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] $Yn [cmds]                        |
          |--------------+---------------------------------------------|
          | Example:     | AT $Y1 S0=1<CR>                             |
          |--------------+---------------------------------------------|
          | Description: | Sets the security level of the callback     |
          |              | function.                                   |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |     $Y0      | Callback security disabled.                 |
          |--------------+---------------------------------------------|
          |     $Y1      | Enables CB1; Set password for 10 users;     |
          |              | Modem prompt caller for password and a      |
          |              | number (0-9). Modem disconnects, correct    |
          |              | password initiates call back.               |
          |--------------+---------------------------------------------|
          |     $Y2      | Enables CB2; Set password for any user;     |
          |              | Modem prompt caller for password and        |
          |              | complete phone number. Modem disconnects,   |
          |              | correct password initiates call back.       |
          |--------------+---------------------------------------------|
          |     $Y3      | Enables CB3; Set password for 10 individual |
          |              | users; Modem prompt caller for their        |
          |              | password. Modem disconnects, correct        |
          |              | password initiates call back for their      |
          |              | phone number.                               |
          |--------------+---------------------------------------------|
          |     $Y4      | Enables caller filter without call back.    |
          |              | Set password for any user; Modem prompt     |
          |              | caller for password, correct password modem |
          |              | stays on-line, not password modem           |
          |              | disconnects.                                |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                      CHARACTER LENGTH                      |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] $Ln [cmds]                        |
          |--------------+---------------------------------------------|
          | Example:     | AT $L3<CR>                                  |
          |--------------+---------------------------------------------|
          | Description: | Sets length of character.                   |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |     $L0      | 8 bits per character.                       |
          |--------------+---------------------------------------------|
          |     $L1      | 9 bits per character.                       |
          |--------------+---------------------------------------------|
          | » $L2        | 10 bits per character.                      |
          |--------------+---------------------------------------------|
          |     $L3      | 11 bits per character.                      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                        COMPRESSION                         |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT $Cn                                      |
          |--------------+---------------------------------------------|
          | Example:     | AT *EC0 $C1 *AP0<CR>                        |
          |--------------+---------------------------------------------|
          | Description: | Selects data compression.                   |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |     $C0      | Data compression disabled.                  |
          |--------------+---------------------------------------------|
          | » $C1        | Data compression enabled.                   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                      CONNECT MESSAGE                       |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] $Xn [cmds]                        |
          |--------------+---------------------------------------------|
          | Example:     | AT $X2 &W<CR>                               |
          |--------------+---------------------------------------------|
          | Description: | Controls connect message.                   |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |     $X0      | Normal connect and DCE speed message        |
          |              | enabled.                                    |
          |--------------+---------------------------------------------|
          |     $X1      | Normal connect and DTE speed message        |
          |              | enabled.                                    |
          |--------------+---------------------------------------------|
          | » $X2        | Extended connect and DCE speed message      |
          |              | enabled.                                    |
          |--------------+---------------------------------------------|
          |     $X3      | Extended connect and DTE speed message      |
          |              | enabled.                                    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                       DIAL INTERRUPT                       |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] $Kn [cmds]                        |
          |--------------+---------------------------------------------|
          | Example:     | AT $K1 &W<CR>                               |
          |--------------+---------------------------------------------|
          | Description: | Control dial interrupt.                     |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |     $K0      | Dial interrupt disabled.                    |
          |--------------+---------------------------------------------|
          | » $K1        | Dial interrupt enabled.                     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    ECHO CANCELER LENGTH                    |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] $An [cmds]                        |
          |--------------+---------------------------------------------|
          | Example:     | AT $A0 &W<CR>                               |
          |--------------+---------------------------------------------|
          | Description: | Controls canceler length.                   |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |     $A0      | Standard canceler enabled.                  |
          |--------------+---------------------------------------------|
          | » $A1        | Long canceler enabled, used when round-trip |
          |              | delay is > 36.833ms.                        |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   ERROR CORRECTION MODE                    |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] $En [cmds]                        |
          |--------------+---------------------------------------------|
          | Example:     | AT $E1 %C1<CR>                              |
          |--------------+---------------------------------------------|
          | Description: | Selects active error-correction protocols.  |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |     $E0      | Normal mode enabled.                        |
          |--------------+---------------------------------------------|
          |     $E1      | Auto-MNP mode enabled.                      |
          |--------------+---------------------------------------------|
          |     $E2      | MNP mode enabled.                           |
          |--------------+---------------------------------------------|
          | » $E3        | Auto-V.42 mode enabled.                     |
          |--------------+---------------------------------------------|
          |     $E4      | LAPM mode enabled.                          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                       EXTENDED RING                        |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] $In [cmds]                        |
          |--------------+---------------------------------------------|
          | Example:     | AT$I0<CR>                                   |
          |--------------+---------------------------------------------|
          | Description: | Selects the response to extended ring       |
          |              | types.                                      |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          | » $I0        | Respond to all ring types.                  |
          |--------------+---------------------------------------------|
          |     $I1      | Respond to single ring.                     |
          |--------------+---------------------------------------------|
          |     $I2      | Respond to double ring.                     |
          |--------------+---------------------------------------------|
          |     $I3      | Respond to single and double rings.         |
          |--------------+---------------------------------------------|
          |     $I4      | Respond to triple ring.                     |
          |--------------+---------------------------------------------|
          |     $I5      | Respond to single and triple rings.         |
          |--------------+---------------------------------------------|
          |     $I6      | Respond to double and triple rings.         |
          |--------------+---------------------------------------------|
          |     $I7      | Respond to all ring types.                  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                        FLOW CONTROL                        |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] $Fn [cmds]                        |
          |--------------+---------------------------------------------|
          | Example:     | AT $F4 &W<CR>                               |
          |--------------+---------------------------------------------|
          | Description: | Select type of flow control.                |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |     $F0      | XON/XOFF local flow enabled.                |
          |--------------+---------------------------------------------|
          |     $F1      | XON/XOFF passthrough flow enabled.          |
          |--------------+---------------------------------------------|
          |     $F2      | HP ENQ/ACK pacing enabled.                  |
          |--------------+---------------------------------------------|
          |     $F3      | Hardware DTR/DSR flow control enabled.      |
          |--------------+---------------------------------------------|
          | » $F4        | Hardware CTS/RTS flow control enabled.      |
          |--------------+---------------------------------------------|
          |     $F5      | Flow control disabled.                      |
          |--------------+---------------------------------------------|
          |     $F6      | modem translates XON/XOFF received from     |
          |              | line to CTS.                                |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |              FLOW CONTROL IN SPEED CONVERSION              |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] $Mn [cmds]                        |
          |--------------+---------------------------------------------|
          | Example:     | AT $M1 &W<CR>                               |
          |--------------+---------------------------------------------|
          | Description: | Controls DCE-to-DCE flow in speed           |
          |              | conversion.                                 |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          | » $M0        | DCE-to-DCE flow in speed conversion         |
          |              | disabled, (XON/XOFF).                       |
          |--------------+---------------------------------------------|
          |     $M1      | DCE-to-DCE flow in speed conversion         |
          |              | enabled, (XON/XOFF).                        |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                       HOLD HOOK TIME                       |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S30=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Example:     | ATS30=6<CR>                                 |
          |--------------+---------------------------------------------|
          | Default:     | 0                                           |
          |--------------+---------------------------------------------|
          | Range:       | 0-255                                       |
          |--------------+---------------------------------------------|
          | Unit:        | 1 second.                                   |
          |--------------+---------------------------------------------|
          | Description: | Sets hold hook time for lease line mode.    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                       IDENTIFICATION                       |
          |------------------------------------------------------------|
          | Type:        | Immediate                                   |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] In [cmds]                         |
          |--------------+---------------------------------------------|
          | Example:     | AT I3 &W<CR>                                |
          |--------------+---------------------------------------------|
          | Description: | Displays several options.                   |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |      I0      | Display product - identification code.      |
          |--------------+---------------------------------------------|
          |      I1      | Display software version.                   |
          |--------------+---------------------------------------------|
          |      I2      | Show ‘OK’ twice.                            |
          |--------------+---------------------------------------------|
          |      I8      | Test memory.                                |
          |--------------+---------------------------------------------|
          |      I9      | Display ROM checksum.                       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |             LEASED LINE BACKUP RECOVERY DELAY              |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S33=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Example:     | ATS33=10<CR>                                |
          |--------------+---------------------------------------------|
          | Default:     | 60                                          |
          |--------------+---------------------------------------------|
          | Range:       | 0-255                                       |
          |--------------+---------------------------------------------|
          | Unit:        | 1 minute.                                   |
          |--------------+---------------------------------------------|
          | Description: | After leased line failure, modem attempts   |
          |              | to reconnect after specified delay.         |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                          PASSWORD                          |
          |------------------------------------------------------------|
          | Type:        | Immediate                                   |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] $Pn [cmds]                        |
          |--------------+---------------------------------------------|
          | Example:     | AT $P12 &W<CR>                              |
          |--------------+---------------------------------------------|
          | Description: | Controls password.                          |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |     $Pn      | Change password for call back 3, for stored |
          |              | n phone number (0<n>9).                     |
          |--------------+---------------------------------------------|
          |     $P10     | Change password for remote configuration.   |
          |--------------+---------------------------------------------|
          |     $P11     | Change password for call back 1.            |
          |--------------+---------------------------------------------|
          |     $P12     | Change password for call back 2.            |
          |--------------+---------------------------------------------|
          |     $P13     | Change password for call filter.            |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                       PROTOCOL/SPEED                       |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] &Ln [cmds]                        |
          |--------------+---------------------------------------------|
          | Example:     | AT &L0 A<CR>                                |
          |--------------+---------------------------------------------|
          | Description: | Selects the current protocol and speed.     |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          | » &L0        | Auto-select fastest common protocol.        |
          |--------------+---------------------------------------------|
          |     &L1      | Connect at V.23 75/1200bps.                 |
          |--------------+---------------------------------------------|
          |     &L2      | Not used.                                   |
          |--------------+---------------------------------------------|
          |     &L3      | Connect at 300bps.                          |
          |--------------+---------------------------------------------|
          |     &L4      | Connect at 600bps.                          |
          |--------------+---------------------------------------------|
          |     &L5      | Connect at 1200bps.                         |
          |--------------+---------------------------------------------|
          |     &L6      | Connect at 2400bps.                         |
          |--------------+---------------------------------------------|
          |     &L7      | Connect at 4800bps.                         |
          |--------------+---------------------------------------------|
          |     &L8      | Connect at 7200bps.                         |
          |--------------+---------------------------------------------|
          |     &L9      | Connect at 9600bps.                         |
          |--------------+---------------------------------------------|
          |     &L10     | Connect at 12Kbps.                          |
          |--------------+---------------------------------------------|
          |     &L11     | Connect at 14.4Kbps.                        |
          |--------------+---------------------------------------------|
          |     &L12     | Connect at 16.8Kbps.                        |
          |--------------+---------------------------------------------|
          |     &L13     | Connect at 19.2Kbps.                        |
          |--------------+---------------------------------------------|
          |     &L14     | Not used.                                   |
          |--------------+---------------------------------------------|
          |     &L15     | Connect at 21.6Kbps.                        |
          |--------------+---------------------------------------------|
          |     &L16     | Connect at 24Kbps.                          |
          |--------------+---------------------------------------------|
          |     &L17     | Connect at 26.4Kbps.                        |
          |--------------+---------------------------------------------|
          |     &L18     | Connect at 28.8Kbps.                        |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                           REDIAL                           |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S32=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Example:     | ATS32=20<CR>                                |
          |--------------+---------------------------------------------|
          | Default:     | 20                                          |
          |--------------+---------------------------------------------|
          | Range:       | 0-255                                       |
          |--------------+---------------------------------------------|
          | Unit:        | 1 second.                                   |
          |--------------+---------------------------------------------|
          | Description: | Sets length of time before modem redials    |
          |              | the last number dialed.                     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    REMOTE CONFIGURATION                    |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] $Rn [cmds]                        |
          |--------------+---------------------------------------------|
          | Example:     | AT $R0 &W<CR>                               |
          |--------------+---------------------------------------------|
          | Description: | Controls remote configuration.              |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          | » $R0        | Remote configuration disabled.              |
          |--------------+---------------------------------------------|
          |     $R1      | Remote configuration enabled.               |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                       RETRAIN OPTION                       |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] &En [cmds]                        |
          |--------------+---------------------------------------------|
          | Example:     | AT &E0 &W<CR>                               |
          |--------------+---------------------------------------------|
          | Description: | Selects retraining option.                  |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          | » &E0        | Disconnect after 4 retrain attempts during  |
          |              | 3 minute period.                            |
          |--------------+---------------------------------------------|
          |     &E1      | Disconnect after 4 retrain attempts during  |
          |              | 4 minute period.                            |
          |--------------+---------------------------------------------|
          |     &E2      | Disconnect after 4 retrain attempts during  |
          |              | 5 minute period.                            |
          |--------------+---------------------------------------------|
          |     &E3      | Retrain action always enabled.              |
          |--------------+---------------------------------------------|
          |     &E4      | Retrain action disabled.                    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |              SWITCHED LINE TRANSMISSION LEVEL              |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] $Tn [cmds]                        |
          |--------------+---------------------------------------------|
          | Example:     | AT $T12<CR>                                 |
          |--------------+---------------------------------------------|
          | Default:     | 12                                          |
          |--------------+---------------------------------------------|
          | Range:       | 0 - 15                                      |
          |--------------+---------------------------------------------|
          | Unit:        | -1 dBm.                                     |
          |--------------+---------------------------------------------|
          | Description: | Sets the signal level for transmission when |
          |              | in switched line mode.                      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                       V.34 PROTOCOL                        |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] $Vn [cmds]                        |
          |--------------+---------------------------------------------|
          | Example:     | AT $V1 <CR>                                 |
          |--------------+---------------------------------------------|
          | Description: | Controls V.34 protocol.                     |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |     $V0      | V.34 protocol disabled.                     |
          |--------------+---------------------------------------------|
          | » $V1        | V.34 protocol enabled.                      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   V.42 DETECTION OPTIONS                   |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S48=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Example:     | ATS48=7<CR>                                 |
          |--------------+---------------------------------------------|
          | Default:     | 7                                           |
          |--------------+---------------------------------------------|
          | Range:       | 0 and 7                                     |
          |--------------+---------------------------------------------|
          | Unit:        | Unidentified.                               |
          |--------------+---------------------------------------------|
          | Description: | Controls detection phase.                   |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |    S47=0     | Originating side detection disabled.        |
          |--------------+---------------------------------------------|
          | » S47=7      | Originating side detection enabled.         |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    V.42 DETECTION TIMER                    |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S47=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Example:     | ATS47=75<CR>                                |
          |--------------+---------------------------------------------|
          | Default:     | 75                                          |
          |--------------+---------------------------------------------|
          | Range:       | 75-255                                      |
          |--------------+---------------------------------------------|
          | Unit:        | .01 second.                                 |
          |--------------+---------------------------------------------|
          | Description: | Sets the time for V.42 negotiation.         |
          +------------------------------------------------------------+