(TXT) View Source
       
       # ARCHTEK CORPORATION
       
          3334BT
       
          Card Type              Modem/Fax card                          
          Chip Set               Texas Instruments                       
          I/O Options            Line out, phone in                      
          Maximum Modem Rate     33.6Kbps                                
          Maximum Fax Rate       14.4Kbps                                
          Data Modulation        Bell 103A/212A                          
          Protocol                                                       
                                 ITU-T V.21, V.22, V.22bis, V.32,        
                                 V.32bis, V.34, V.34bis                  
          Fax Modulation         ITU-T V.17, V.21CH2, V.27ter, V.29      
          Protocol               
          Error                  MNP5, V.42, V.42bis                     
          Correction/Compression 
          Fax Class              Class I & II                            
          Data Bus               8-bit ISA                               
          Card Size              Half-length                             
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |        Function        |  Label   |   Function   |  Label  |
          |------------------------------------------------------------|
          | Line out                    |    CN2     | Phone in | CN3  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    SERIAL PORT ADDRESS                     |
          |------------------------------------------------------------|
          |     Setting      |    J3/A     |    J3/B     |    J3/C     |
          |------------------+-------------+-------------+-------------|
          |   COM1 (3F8h)    |   Closed    |   Closed    |   Closed    |
          |------------------+-------------+-------------+-------------|
          |   COM2 (2F8h)    |    Open     |   Closed    |   Closed    |
          |------------------+-------------+-------------+-------------|
          |   COM3 (3E8h)    |   Closed    |    Open     |   Closed    |
          |------------------+-------------+-------------+-------------|
          |   COM4 (2E8h)    |    Open     |    Open     |   Closed    |
          |------------------+-------------+-------------+-------------|
          |     Disabled     |    Open     |    Open     |    Open     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                         INTERRUPT                          |
          |------------------------------------------------------------|
          |    Setting    |  J4/A  |  J4/B  |  J4/C  |  J4/D  |  J4/E  |
          |---------------+--------+--------+--------+--------+--------|
          |     IRQ2      |   On   |  Off   |  Off   |  Off   |  Off   |
          |---------------+--------+--------+--------+--------+--------|
          |     IRQ3      |  Off   |   On   |  Off   |  Off   |  Off   |
          |---------------+--------+--------+--------+--------+--------|
          |     IRQ4      |  Off   |  Off   |   On   |  Off   |  Off   |
          |---------------+--------+--------+--------+--------+--------|
          |     IRQ5      |  Off   |  Off   |  Off   |   On   |  Off   |
          |---------------+--------+--------+--------+--------+--------|
          |     IRQ7      |  Off   |  Off   |  Off   |  Off   |   On   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   SUPPORTED COMMAND SET                    |
          |------------------------------------------------------------|
          |                     Basic AT Commands                      |
          |------------------------------------------------------------|
          | AT, ‘+++’, ‘comma’, A/                                     |
          |------------------------------------------------------------|
          | A, B, E, F, H, M, O, S, V                                  |
          |------------------------------------------------------------|
          | &C, &D, &G, &T, &W, &Z                                     |
          |------------------------------------------------------------|
          |                        S Registers                         |
          |------------------------------------------------------------|
          | S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12,     |
          | S18, S25                                                   |
          |------------------------------------------------------------|
          |                                                            |
          |------------------------------------------------------------|
          | Note: See MHI Help File for full command documentation.    |
          +------------------------------------------------------------+
       
                            PROPRIETARY AT COMMAND SET
       
          +------------------------------------------------------------+
          |                            DIAL                            |
          |------------------------------------------------------------|
          | Type:        | Immediate                                   |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] D<#> [cmds]                       |
          |--------------+---------------------------------------------|
          | Description: | Dials telephone number according to any     |
          |              | modifiers included in the string            |
          |--------------+---------------------------------------------|
          | Note:        | Any combination of modifiers can be used to |
          |              | produce the desired dial functions in       |
          |              | sequence.                                   |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |      DL      | Re-dial last number                         |
          |--------------+---------------------------------------------|
          |     í DP     | Pulse dialing enabled                       |
          |--------------+---------------------------------------------|
          |      DR      | Answer mode enabled; originate mode         |
          |              | disabled following handshake initiation.    |
          |--------------+---------------------------------------------|
          |     DS=n     | Dial stored telephone number n              |
          |--------------+---------------------------------------------|
          |      DT      | Tone dialing enabled/Pulse dialing disabled |
          |--------------+---------------------------------------------|
          |      DW      | Dialing resumed following dial tone         |
          |              | detection                                   |
          |--------------+---------------------------------------------|
          |      D,      | Dialing paused for amount of time specified |
          |              | in S8 register                              |
          |--------------+---------------------------------------------|
          |      D!      | Flash function initiated. Modem commanded   |
          |              | to go off-hook for specified time before    |
          |              | returning on-hook.                          |
          |--------------+---------------------------------------------|
          |      D@      | Wait for Quite Answer function enabled.     |
          |              | Modem waits until a "quiet answer," a       |
          |              | ring-back signal followed by silence up to  |
          |              | the time specified in S7, is received prior |
          |              | to executing the rest of the dial string.   |
          |--------------+---------------------------------------------|
          |      D;      | Modem returned to idle state after dialing. |
          |              | The semicolon can only be placed at the end |
          |              | of the dial command.                        |
          |--------------+---------------------------------------------|
          |      D/      | Delays for 125 msec. before proceeding with |
          |              | dial                                        |
          |--------------+---------------------------------------------|
          |    D#,D*     | Extended touch tone pad tones               |
          |--------------+---------------------------------------------|
          |      D$      | Displays a list of dial commands            |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     REPORT INFORMATION                     |
          |------------------------------------------------------------|
          | Type:        | Immediate                                   |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] In [cmds]                         |
          |--------------+---------------------------------------------|
          | Description: | Displays information requested              |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |      I0      | Reports four digit product code             |
          |--------------+---------------------------------------------|
          |      I1      | Reports ROM checksum                        |
          |--------------+---------------------------------------------|
          |      I2      | Reports results of RAM self test            |
          |--------------+---------------------------------------------|
          |      I3      | Reports product type                        |
          |--------------+---------------------------------------------|
          |      I4      | Reports current modem settings              |
          |--------------+---------------------------------------------|
          |      I5      | Reports NVRAM settings                      |
          |--------------+---------------------------------------------|
          |      I6      | Reports link diagnostics                    |
          |--------------+---------------------------------------------|
          |      I7      | Reports product configuration               |
          |--------------+---------------------------------------------|
          |      I9      | Reports plug and play information           |
          |--------------+---------------------------------------------|
          |     I11      | Reports call statistics                     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                       SPEAKER VOLUME                       |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] Ln [cmds]                         |
          |--------------+---------------------------------------------|
          | Description: | Controls speaker volume                     |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |      L0      | Low volume setting                          |
          |--------------+---------------------------------------------|
          |      L1      | Low volume setting                          |
          |--------------+---------------------------------------------|
          |     í L2     | Medium volume setting                       |
          |--------------+---------------------------------------------|
          |      L3      | Highest volume setting                      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                        RESULT CODES                        |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] Qn [cmds]                         |
          |--------------+---------------------------------------------|
          | Description: | Enables modem to send result codes to the   |
          |              | DTE                                         |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |      Q0      | Result code sending enabled                 |
          |--------------+---------------------------------------------|
          |      Q1      | Result code sending disabled                |
          |--------------+---------------------------------------------|
          |      Q2      | Displays result codes in originate mode     |
          |--------------+---------------------------------------------|
          |      Q3      | Displays result codes only in ring mode     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |             SELECT CALL PROGRESS RESULT CODES              |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] Xn [cmds]                         |
          |--------------+---------------------------------------------|
          | Description: | Enables selection of tone detection and     |
          |              | associated result code format options       |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |      X0      | Busy and dial tone detection disabled;      |
          |              | result codes 0 - 4 enabled.                 |
          |--------------+---------------------------------------------|
          |      X1      | Busy and dial tone detection disabled;      |
          |              | result codes 0 - 5 & 10 - 25 enabled.       |
          |--------------+---------------------------------------------|
          |      X2      | Busy tone detection disabled, dial tone     |
          |              | detection enabled; result codes 0 - 6 & 10  |
          |              | -155 enabled.                               |
          |--------------+---------------------------------------------|
          |      X3      | Busy tone detection enabled, dial tone      |
          |              | detection disabled; result codes 0 - 4, 8 - |
          |              | 155 enabled.                                |
          |--------------+---------------------------------------------|
          |      X4      | Busy and dial tone detection enabled;       |
          |              | result codes 0 -1 & 3 - 155 enabled.        |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                RESET DEFUALT CONFIGURATION                 |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] Yn [cmds]                         |
          |--------------+---------------------------------------------|
          | Description: | Tells the modem which profile to use the    |
          |              | next time the modem is turned on or reset   |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |      Y0      | Load profile 0                              |
          |--------------+---------------------------------------------|
          |      Y1      | Load profile 1                              |
          |--------------+---------------------------------------------|
          |      Y2      | Generic template                            |
          |--------------+---------------------------------------------|
          |      Y3      | Hardware flow control                       |
          |--------------+---------------------------------------------|
          |      Y4      | Software flow control                       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                         SOFT RESET                         |
          |------------------------------------------------------------|
          | Type:        | Immediate                                   |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] Zn [cmds]                         |
          |--------------+---------------------------------------------|
          | Description: | Restores modem profiles previously saved in |
          |              | non-volatile RAM using the &W command.      |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |      Z0      | Restore NVRAM setting selected by Y command |
          |--------------+---------------------------------------------|
          |      Z1      | Restore NVRAM setting 0                     |
          |--------------+---------------------------------------------|
          |      Z2      | Restore NVRAM setting 1                     |
          |--------------+---------------------------------------------|
          |      Z3      | Restore factory default setting 0           |
          |--------------+---------------------------------------------|
          |      Z4      | Restore factory default setting 1           |
          |--------------+---------------------------------------------|
          |      Z5      | Restore factory default setting 2           |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                          COMMANDS                          |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] &$ [cmds]                         |
          |--------------+---------------------------------------------|
          | Description: | Displays a list of ampersand commands       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                      MODIFY RESPONSES                      |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] &An [cmds]                        |
          |--------------+---------------------------------------------|
          | Description: | Determines whether the modem sends MNP      |
          |              | responses                                   |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |     &A0      | ARQ result codes disabled                   |
          |--------------+---------------------------------------------|
          |     &A1      | Append /ARQ to word CONNECT responses when  |
          |              | an error correction connection is made.     |
          |--------------+---------------------------------------------|
          |     &A2      | Append additional V.32 indicator in result  |
          |              | codes for calls at or above 4800bps         |
          |--------------+---------------------------------------------|
          |     &A3      | Append protocol of call                     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                       DTE INTERFACE                        |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] &Bn [cmds]                        |
          |--------------+---------------------------------------------|
          | Description: | Controls DTE interface speed                |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |     &B0      | Change serial port speed to match rate of   |
          |              | connection                                  |
          |--------------+---------------------------------------------|
          |    í &B1     | Serial port speed is independent of         |
          |              | connection speed                            |
          |--------------+---------------------------------------------|
          |     &B2      | In answer mode, serial port speed is fixed  |
          |              | only for ARQ calls                          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  FACTORY DEFAULT PROFILE                   |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] &F [cmds]                         |
          |--------------+---------------------------------------------|
          | Description: | Sets values in active profile to values     |
          |              | found in the default profile                |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |     &F0      | Sets values to standard factory             |
          |              | configuration                               |
          |--------------+---------------------------------------------|
          |     &F1      | Sets values to factory configuration 0      |
          |--------------+---------------------------------------------|
          |     &F2      | Sets values to factory configuration 1      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                        FLOW CONTROL                        |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] &Hn [cmds]                        |
          |--------------+---------------------------------------------|
          | Description: | Enables flow control options                |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |     &H0      | Flow control disabled                       |
          |--------------+---------------------------------------------|
          |     &H1      | Hardware flow control enabled               |
          |--------------+---------------------------------------------|
          |     &H2      | Software flow control enabled               |
          |--------------+---------------------------------------------|
          |     &H3      | Hardware and software flow control enabled  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 FLOW CONTROL PASS THROUGH                  |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] &In [cmds]                        |
          |--------------+---------------------------------------------|
          | Description: | Enables flow control options                |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |     &I0      | XON/XOFF flow control disabled              |
          |--------------+---------------------------------------------|
          |     &I1      | Process XON/XOFF signals to your modem and  |
          |              | remote system                               |
          |--------------+---------------------------------------------|
          |     &I2      | Process XON/XOFF signals to your modem only |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                      DATA COMPRESSION                      |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] &Kn [cmds]                        |
          |--------------+---------------------------------------------|
          | Description: | Enables data compression                    |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |     &K0      | Data compression disabled                   |
          |--------------+---------------------------------------------|
          |     &K1      | Data compression is enabled if the DTE data |
          |              | rate is higher than the link rate and the   |
          |              | remote DCE supports either MNP5 or V.42bis  |
          |--------------+---------------------------------------------|
          |     &K2      | Data compression enabled                    |
          |--------------+---------------------------------------------|
          |     &K3      | MNP5 disabled, V.42bis enabled              |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    COMMUNICATIONS MODE                     |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] &Mn [cmds]                        |
          |--------------+---------------------------------------------|
          | Description: | Selects communications mode                 |
          |--------------+---------------------------------------------|
          |   Command    |                    Mode                     |
          |--------------+---------------------------------------------|
          |     &M0      | Normal mode                                 |
          |--------------+---------------------------------------------|
          |     &M4      | V.42 auto-reliable mode                     |
          |--------------+---------------------------------------------|
          |     &M5      | V.42 or MNP reliable mode                   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                CONNECTION SPEED UPPER LIMIT                |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] &Nn [cmds]                        |
          |--------------+---------------------------------------------|
          | Description: | Sets required connection speed if &U is set |
          |              | to 0; otherwise, sets fastest allowed       |
          |              | connection speed.                           |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |     &N0      | No maximum connect speed.                   |
          |--------------+---------------------------------------------|
          |     &N1      | Set maximum connect speed to 300bps.        |
          |--------------+---------------------------------------------|
          |     &N2      | Set maximum connect speed to 1200bps.       |
          |--------------+---------------------------------------------|
          |     &N3      | Set maximum connect speed to 2400bps.       |
          |--------------+---------------------------------------------|
          |     &N4      | Set maximum connect speed to 4800bps.       |
          |--------------+---------------------------------------------|
          |     &N5      | Set maximum connect speed to 7200bps.       |
          |--------------+---------------------------------------------|
          |     &N6      | Set maximum connect speed to 9600bps.       |
          |--------------+---------------------------------------------|
          |     &N7      | Set maximum connect speed to 12Kbps.        |
          |--------------+---------------------------------------------|
          |     &N8      | Set maximum connect speed to 14.4Kbps.      |
          |--------------+---------------------------------------------|
          |     &N9      | Set maximum connect speed to 16.8Kbps.      |
          |--------------+---------------------------------------------|
          |     &N10     | Set maximum connect speed to 19.2Kbps.      |
          |--------------+---------------------------------------------|
          |     &N11     | Set maximum connect speed to 21.6Kbps.      |
          |--------------+---------------------------------------------|
          |     &N12     | Set maximum connect speed to 24Kbps.        |
          |--------------+---------------------------------------------|
          |     &N13     | Set maximum connect speed to 26.4Kbps.      |
          |--------------+---------------------------------------------|
          |     &N14     | Set maximum connect speed to 28.8Kbps.      |
          |--------------+---------------------------------------------|
          |     &N15     | Set maximum connect speed to 31.2Kbps.      |
          |--------------+---------------------------------------------|
          |     &N16     | Set maximum connect speed to 33.6Kbps.      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    PULSE DIALING RATIO                     |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] &Pn [cmds]                        |
          |--------------+---------------------------------------------|
          | Description: | Selects pulse dial make/break ratio         |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |    í &P0     | 39/61ms at 10pps (North America)            |
          |--------------+---------------------------------------------|
          |     &P1      | 33/67ms at 10pps (Europe)                   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                        RECEIVE DATA                        |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] &Rn [cmds]                        |
          |--------------+---------------------------------------------|
          | Description: | Selects RTS options                         |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |     &R1      | RTS is ignored by modem.                    |
          |--------------+---------------------------------------------|
          |    í &R2     | Modem sends data to DTE only if RTS is on   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    DATA SET READY (DSR)                    |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] &Sn [cmds]                        |
          |--------------+---------------------------------------------|
          | Description: | Selects DSR options                         |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |     &S0      | DSR forced high                             |
          |--------------+---------------------------------------------|
          |     &S1      | DSR high only while modem is handshaking or |
          |              | connected                                   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                CONNECTION SPEED LOWER LIMIT                |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] &Un [cmds]                        |
          |--------------+---------------------------------------------|
          | Description: | Sets slowest allowed connection speed if &N |
          |              | is set to 1 or higher.                      |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |    í &U0     | No minimum connect speed.                   |
          |--------------+---------------------------------------------|
          |     &U1      | Set minimum connect speed to 300bps.        |
          |--------------+---------------------------------------------|
          |     &U2      | Set minimum connect speed to 1200bps.       |
          |--------------+---------------------------------------------|
          |     &U3      | Set minimum connect speed to 2400bps.       |
          |--------------+---------------------------------------------|
          |     &U4      | Set minimum connect speed to 4800bps.       |
          |--------------+---------------------------------------------|
          |     &U5      | Set minimum connect speed to 7200bps.       |
          |--------------+---------------------------------------------|
          |     &U6      | Set minimum connect speed to 9600bps.       |
          |--------------+---------------------------------------------|
          |     &U7      | Set minimum connect speed to 12Kbps.        |
          |--------------+---------------------------------------------|
          |     &U8      | Set minimum connect speed to 14.4Kbps.      |
          |--------------+---------------------------------------------|
          |     &U9      | Set minimum connect speed to 16.8Kbps.      |
          |--------------+---------------------------------------------|
          |     &U10     | Set minimum connect speed to 19.2Kbps.      |
          |--------------+---------------------------------------------|
          |     &U11     | Set minimum connect speed to 21.6Kbps.      |
          |--------------+---------------------------------------------|
          |     &U12     | Set minimum connect speed to 24Kbps.        |
          |--------------+---------------------------------------------|
          |     &U13     | Set minimum connect speed to 26.4Kbps.      |
          |--------------+---------------------------------------------|
          |     &U14     | Set minimum connect speed to 28.8Kbps.      |
          |--------------+---------------------------------------------|
          |     &U15     | Set minimum connect speed to 31.2Kbps.      |
          |--------------+---------------------------------------------|
          |     &U16     | Set minimum connect speed to 33.6Kbps.      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                       BREAK HANDLING                       |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] &Yn [cmds]                        |
          |--------------+---------------------------------------------|
          | Description: | Sets break handling                         |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |     &Y0      | Destructive, but doesn’t sent break         |
          |--------------+---------------------------------------------|
          |     &Y1      | Destructive, expedited                      |
          |--------------+---------------------------------------------|
          |     &Y2      | Nondestructive, expedited                   |
          +------------------------------------------------------------+
       
                               S(STATUS) -REGISTERS
       
          +------------------------------------------------------------+
          |                      INACTIVITY TIMER                      |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format       | AT [cmds] S19=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Default:     | 0                                           |
          |--------------+---------------------------------------------|
          | Unit:        | 1 second                                    |
          |--------------+---------------------------------------------|
          | Description: | Activates when there is no activity on the  |
          |              | phone line. Modem hangs up at time-out      |
          |------------------------------------------------------------|
          |      Note: S19=0 disables the timer and allows an          |
          |      indefinite duration.                                  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   MNP OR V.42 MODE DELAY                   |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format       | AT [cmds] S21=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Range:       | Unidentified                                |
          |--------------+---------------------------------------------|
          | Unit:        | 10ms                                        |
          |--------------+---------------------------------------------|
          | Description: | Sets the length of breaks sent from modem   |
          |              | to computer.                                |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                FLOW CONTROL CHARACTER - XON                |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S22=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Range:       | Unidentified                                |
          |--------------+---------------------------------------------|
          | Unit:        | ASCII                                       |
          |--------------+---------------------------------------------|
          | Description: | Sets the character used to represent XON    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               FLOW CONTROL CHARACTER - XOFF                |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S23=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Range:       | Unidentified                                |
          |--------------+---------------------------------------------|
          | Unit:        | ASCII                                       |
          |--------------+---------------------------------------------|
          | Description: | Sets the character used to represent XOFF   |
          +------------------------------------------------------------+