
MOTOROLA, INC.

3261FAST/3261FAST-SDC/3266FAST/3266FAST-SDC

Modem Type                   Data (synchronous/asynchronous)
Maximum Data Rate            28.8Kbps
Data Bus                     External
Data Modulation Protocol     Bell 103A/212A

                             ITU-T V.21, V.22, V.22bis, V.32, V.32bis,
                             V.34
Error Correction/Compression MNP5, V.42, V.42bis

                             Motorola Codex

[Image]

                                CONNECTIONS

         Purpose            Location           Purpose          Location

  RETURN button               BT1        Leased line out           CN3

  DOWN button                 BT2        120VAC power              CN4

  ACROSS button               BT3        RS-232/422                CN5

  ENTER button                BT4        Network control out       CN6
  (Talk/Data)

  Switched line out           CN1        Network control in        CN7

  Line in                     CN2        Power switch              SW1

    ELECTRICAL INTERFACE SELECTION

  Interface              SW2/1

   EIA/TIA 232-D          On

  ITU-T V.35              Off

                          TEST/BUSY OUT ON PIN 25

  Mode                                                SW2/2

   Enable busy out when pin 25 is                     Off
  high

  Self test is in progress when pin 25                 On
  is high

            FRONT PANEL CONFIGURATION

  Mode                            SW2/3

   Front panel enabled            Off

  Front panel disabled              On

                             RESET MEMORY

  Mode                                           SW2/4

   Normal operation                              Off

  Reset modem to factory settings                  On

                    COMMAND SETS

  Mode                              SW2/5

   Command sets enabled             Off

  Command sets disabled              On

  FACTORY CONFIGURED - DO NOT ALTER

      Switch            Position

       SW2/6               Off

                             DIAGNOSTIC LED(S)

     LED          Color        Status                Condition

      RD           Red           On           Modem is receiving data

      RD           Red           Off        Modem is not receiving data

      TR           Red           On              DTR signal is high

      TR           Red           Off             DTR signal is low

    RI/OH          Red           On         Switched line is off-hook or
                                                     is ringing

    RI/OH          Red           Off        Switched line is on-hook and
                                                   is not ringing

      TD           Red           On          Modem is transmitting data

      TD           Red           Off       Modem is not transmitting data

      CD           Red           On           Carrier signal detected

      CD           Red           Off        Carrier signal not detected

    RC/NC          Red           On           Modem is under remote or
                                                  network control

    RC/NC          Red           Off        Modem is under local control

                         Proprietary AT Command Set

                               ADAPTIVE RATE

  Type:             Configuration

  Format:           AT [cmds] *APn [cmds]

  Example:          AT *EC0 *DC1 *AP0<CR>

  Description:      Selects whether the modem will automatically adjust
                    its speed according to line conditions.

     Command                              Function

       *AP0         Adaptive rate disabled.

       *AP1         Adaptive rate enabled.

                           ANSWER/ORIGINATE MODE

  Type:          Configuration

  Format:        AT [cmds] *CAn [cmds]

  Example:       AT *CA2<CR>

  Description:   Selects whether the modem is in answer or originate
                 mode.

    Command                              Function

      *CA0       Modem is in originate mode.

      *CA1       Modem is in answer mode.

      *CA2       Modem is in answer mode only if pin 11 of the serial
                 interface is high.

      *CA3       Modem switches to originate mode after auto-answer.

                                AUTO-ANSWER

  Type:          Configuration

  Format:        AT [cmds] *AAn [cmds]

  Example:       AT *AA5 S0=3<CR>

  Description:   Configures the modems response to an incoming call.

    Command                              Function

      *AA0       Modem will not answer incoming call.

      *AA1       Modem will answer incoming call on first ring.

      *AA2       Modem will answer incoming call on second ring.

      *AA3       Modem will answer incoming call on fourth ring.

      *AA4       Modem will answer incoming call on eighth ring.

      *AA5       Modem will answer according to register S0.

                        AUTO-ANSWER - SWITCHED LINE

  Type:                Configuration

  Format:              AT [cmds] *ASn [cmds]

  Example:             AT *AS0 H1 DT555-1212<CR>

  Description:         Selects whether the modem will answer an incoming
                       switched line call while connected over the leased
                       line.

       Command                              Function

        *AS0           Modem will ignore incoming switched line call.

        *AS1           Modem will disconnect from leased line to answer
                       switched line call.

                            BLIND DIALING DELAY

  Type:            Configuration

  Format:          AT [cmds] *BDn [cmds]

  Example:         AT *BD2 S6=3<CR>

  Description:     Configures how long the modem will wait before it
                   begins dialing when in blind dial mode.

     Command                              Function

       *BD0        Modem will wait 2 seconds before dialing.

       *BD1        Modem will wait 4 seconds before dialing.

       *BD2        Modem will wait according to register S6.

                                BUFFER SIZE

  Type:          Configuration

  Format:        AT [cmds] *NBn [cmds]

  Example:       AT *NB0<CR>

  Description:   Selects the modems transmit/receive buffer size.

    Command                              Function

      *NB0       Normal buffer size.

      *NB1       Small buffer size.

                           BUSY OUT ON TEST MODE

  Type:          Configuration

  Format:        AT [cmds] *LLn [cmds]

  Example:       AT *LL1 <CR>

  Description:   Sends busy signal when modem is in a test mode.

    Command                              Function

      *LL0       Do not send busy signal when modem is in test mode.

      *LL1       Send busy signal when modem is in test mode.

                                BREAK TYPE

  Type:          Configuration

  Format:        AT [cmds] *BKn [cmds]

  Example:       AT *BK0<CR>

  Description:   Configures action of break signal.

    Command                              Function

      *BK0       Break empties buffer and is sent immediately.

      *BK1       Break does not empty buffer and is sent immediately.

      *BK2       Break does not empty buffer and is sent in sequence.

                          CALLBACK DIAL TONE TIME

  Type:             Register

  Format:           AT [cmds] S45=n [cmds]

  Example:          ATS45=2<CR>

  Default:          5

  Range:            0-10

  Unit:             1 second

  Description:      Sets the length of the dialtone generated by the
                    callback feature to prompt for the password.

                          CALLBACK NUMBER SOURCE

  Type:              Configuration

  Format:            AT [cmds] *ZCn [cmds]

  Example:           AT *ZC10 *ZIsnarf<CR>

  Description:       Configures where the callback function will obtain
                     the number to call.

      Command                              Function

       *ZC0          Callback function disabled.

       *ZC10         Callback function will dial the number provided by
                     the remote user.

       *ZC12         Callback function will dial the number stored in the
                     memory location provided by the remote user.

                            CALLBACK ONLY MODE

  Type:          Configuration

  Format:        AT [cmds] *ZRn [cmds]

  Example:       AT *ZR0 S0=2<CR>

  Description:   Sets whether the modem is callback-only.

    Command                              Function

      *ZR0       Modem will accept both normal calls and callback calls.

      *ZR1       Modem will only accept callback calls.

                             CALLBACK PASSWORD

  Type:            Configuration

  Format:          AT [cmds] *ZIxxxx

  Example:         AT *ZC10 *ZIsnarf<CR>

  Description:     Sets the callback password to xxxx. The password must
                   not be more than 10 characters.

                          CALLBACK PASSWORD TIME

  Type:          Register

  Format:        AT [cmds] S46=n [cmds]

  Example:       ATS46=18<CR>

  Default:       12

  Range:         0-255

  Unit:          1 second

  Description:   Sets the length of time in which the callback password
                 must be entered.

                          CALLBACK RINGBACK TONE

  Type:               Configuration

  Format:             AT [cmds] *ZSn [cmds]

  Example:            AT *ZP2 *ZS1<CR>

  Description:        Selects whether the modem will generate a ringback
                      tone upon receiving the correct callback password.

      Command                              Function

        *ZS0          Modem will not generate ringback tone.

        *ZS1          Modem will generate ringback tone.

                             CALLBACK SECURITY

  Type:          Configuration

  Format:        AT [cmds] *ZVn [cmds]

  Example:       AT *ZV1 S0=1<CR>

  Description:   Enables security for the callback function.

    Command                              Function

      *ZV0       Disables password verification and disables callback
                 mode..

      *ZV1       Enables password verification by the modem.

                          CALLBACK STORED NUMBER

  Type:          Configuration

  Format:        AT [cmds] *ZCn [cmds]

  Example:       AT *ZC3 *ZIsnarf<CR>

  Description:   Callback function will dial the number stored in memory
                 location n.

                              CALLBACK TONES

  Type:          Configuration

  Format:        AT [cmds] *ZPn [cmds]

  Example:       AT *ZP2 *ZS1<CR>

  Description:   Selects which tones the callback function will use to
                 indicate operation.

    Command                              Function

      *ZP0       Callback tones disabled.

      *ZP1       Generate dialtone to prompt for password.

      *ZP2       Generate answer tone after password.

      *ZP3       Generate both tones.

                              CALL WAIT TIMER

  Type:          Configuration

  Format:        AT [cmds] *TTn [cmds]

  Example:       AT *TT5 S7=120<CR>

  Description:   Sets the length of time that the modem will wait for a
                 call to succeed.

    Command                              Function

      *TT0       Modem will wait for 30 seconds.

      *TT1       Modem will wait for 45 seconds.

      *TT2       Modem will wait for 60 seconds.

      *TT3       Modem will wait for 90 seconds.

      *TT4       Modem will wait for 180 seconds.

      *TT5       Modem will wait according to register S7.

                                 CD SIGNAL

  Type:          Configuration

  Format:        AT [cmds] &Cn [cmds]

  Example:       AT &C3 *RS1 *SR1<CR>

  Description:   Configures the behavior of the carrier detect signal.

    Command                              Function

      &C0        CD forced high.

      &C1        CD normal.

      &C2        CD forced high except during handshaking and
                 disconnecting.

      &C3        CD follows remote RTS signal.

      &C4        CD forced high except during disconnecting.

                            CD SIGNAL REACTION

  Type:          Configuration

  Format:        AT [cmds] *CDn [cmds]

  Example:       AT *CD2<CR>

  Description:   Configures the modems response to loss of the carrier
                 signal.

    Command                              Function

      *CD0       Modem ignores low CD.

      *CD1       Modem will wait for 3 seconds of low CD before
                 disconnecting.

      *CD2       Modem will wait for 7 seconds of low CD before
                 disconnecting.

      *CD3       Modem will wait according to register S10.

                                COMPRESSION

  Type:          Configuration

  Format:        AT *DCn

  Example:       AT *EC0 *DC1 *AP0<CR>

  Description:   Selects data compression.

    Command                              Function

      *DC0       Data compression disabled.

      *DC1       Data compression enabled.

                              CONNECT MESSAGE

  Type:             Configuration

  Format:           AT [cmds] *MSn [cmds]

  Example:          AT *MS0<CR>

  Description:      Selects whether CONNECT message is sent before or
                    after the carrier detect signal is high.

     Command                              Function

       *MS0         CONNECT sent after CD is high.

       *MS1         CONNECT sent before CD is high.

                               CONNECT MODE

  Type:                Configuration

  Format:              AT [cmds] *SMn [cmds]

  Example:             AT *SM1 DT555-1212<CR>

  Description:         Sets connect mode.

       Command                              Function

         *SM1          Direct mode.

         *SM0          Normal mode.

         *SM2          Reliable mode.

         *SM3          Auto-reliable mode.

         *SM4          If modem connects at faster than 1200bps, reliable
                       mode will be used.

                       At 1200bps or slower, normal mode will be used for
                       asynchronous connections and direct mode for
                       synchronous connections.

                       CONNECTION SPEED LOWER LIMIT

  Type:          Configuration

  Format:        AT [cmds] *MNn [cmds]

  Example:       AT *MN6 *MX14 *MM11<CR>

  Description:   Sets slowest allowed connection speed.

    Command                              Function

      *MN0       Select 300bps minimum speed.

      *MN1       Select 1200bps minimum speed.

      *MN2       Select 2400bps minimum speed.

      *MN3       Select 4800bps minimum speed.

      *MN4       Select 7200bps minimum speed.

      *MN5       Select 9600bps minimum speed.

      *MN6       Select 12Kbps minimum speed.

      *MN7       Select 14.4Kbps minimum speed.

      *MN8       Select 16.8Kbps minimum speed.

      *MN9       Select 19.2Kbps minimum speed.

     *MN10       Select 21.6Kbps minimum speed.

     *MN11       Select 24Kbps minimum speed.

     *MN12       Select 26.4Kbps minimum speed.

     *MN13       Select 28.8Kbps minimum speed.

                       CONNECTION SPEED UPPER LIMIT

  Type:          Configuration

  Format:        AT [cmds] *MXn [cmds]

  Example:       AT *MN6 *MX14 *MM11<CR>

  Description:   Sets fastest allowed connection speed.

    Command                              Function

      *MX0       Select 300bps maximum speed.

      *MX1       Select 1200bps maximum speed.

      *MX2       Select 2400bps maximum speed.

      *MX3       Select 4800bps maximum speed.

      *MX4       Select 7200bps maximum speed.

      *MX5       Select 9600bps maximum speed.

      *MX6       Select 12Kbps maximum speed.

      *MX7       Select 14.4Kbps maximum speed.

      *MX8       Select 16.8Kbps maximum speed.

      *MX9       Select 19.2Kbps maximum speed.

     *MX10       Select 21.6Kbps maximum speed.

     *MX11       Select 24Kbps maximum speed.

     *MX12       Select 26.4Kbps maximum speed.

     *MX13       Select 28.8Kbps maximum speed.

                                CTS SIGNAL

  Type:                Configuration

  Format:              AT [cmds] *CTn [cmds]

  Example:             AT *CT0<CR>

  Description:         Selects the function of the CTS signal.

       Command                              Function

        *CT0           CTS forced high.

        *CT1           CTS normal.

        *CT2           CTS forced high in command mode, forced low during
                       handshaking and retraining, and follows RTS in
                       data mode.

        *CT3           CTS forced high in asynchronous mode and behaves
                       like *CT2 in synchronous mode.

        *CT4           CTS follows RTS.

                               CTS/RTS DELAY

  Type:              Configuration

  Format:            AT [cmds] *DLn [cmds]

  Example:           AT *DL1 O<CR>

  Description:       When CTS is set to follow RTS, sets the delay
                     between the RTS signal going high and CTS following.

      Command                              Function

        *DL0         CTS follows RTS immediately.

        *DL1         CTS follows RTS after 15ms.

        *DL2         CTS follows RTS after 60ms.

        *DL3         CTS follows RTS after 90ms.

        *DL4         CTS follows RTS according to S26.

                                   DIAL

  Type:                Immediate

  Format:              AT [cmds] D<#> [; cmds]

  Example:             AT H1 DT 9W *70, 1(303) 555-1212<CR>

  Description:         Dials telephone number according to any modifiers
                       included in the string.

       Modifier                             Function

          DK           Dialing paused for amount of time specified in S8
                       register.

          DP           Pulse dialing enabled.

          DR           Dial in answer mode.

         DS=n          Number in memory location n dialed.

          DT           Tone dialing enabled.

          DW           Dialing resumed following dial tone detection.

          D,           Dialing paused for amount of time specified in S8
                       register.

          D<           Dialing paused for amount of time specified in S8
                       register.

          D!           Flash function initiated. Modem commanded to go
                       on-hook for specified time.

          D@           Modem waits for a ring-back signal followed by
                       silence up to the time specified in S7 prior to
                       executing the rest of the dial string.

          D&           Flash function initiated. Modem commanded to go
                       on-hook for specified time.

          D;           Modem returned to idle state after dialing. The
                       semicolon can only be placed at the end of the
                       dial command.

          D:           Dialing resumed following dial tone detection.

                              DIAL PAUSE TIME

  Type:            Configuration

  Format:          AT [cmds] *DPn [cmds]

  Example:         AT *DP9 S8=1<CR>

  Description:     Sets the time the modem will wait when it encounters a
                   pause symbol in a dial string.

     Command                              Function

      *DP0         Modem will pause for 3 seconds.

      *DP1         Modem will pause for 6 seconds.

      *DP2         Modem will pause for 9 seconds.

      *DP3         Modem will pause for 12 seconds.

      *DP4         Modem will pause according to register S8.

                             DIAL RESTRICTIONS

  Type:           Configuration

  Format:         AT [cmds] *ZDn [cmds]

  Example:        AT *ZD10 S0=1<CR>

  Description:    Sets the restrictions on dial commands.

    Command                              Function

      *ZD0        Unrestricted dialing.

      *ZD1        Redial and auto-redial disabled.

      *ZD2        Manual dial, redial, and auto-redial disabled; only
                  stored numbers may be dialed.

                            DIAL TONE WAIT TIME

  Type:          Configuration

  Format:        AT [cmds] *DDn [cmds]

  Example:       AT *DD9 S7=1<CR>

  Description:   Configures how long the modem will wait for a dial tone.

    Command                              Function

      *DD0       Modem will wait 2 seconds for dial tone.

      *DD1       Modem will wait 3 seconds for dial tone.

      *DD2       Modem will wait 4 seconds for dial tone.

      *DD3       Modem will wait 6 seconds for dial tone.

      *DD4       Modem will wait 12 seconds for dial tone.

      *DD5       Modem will wait 15 seconds for dial tone.

      *DD6       Modem will wait 20 seconds for dial tone.

      *DD7       Modem will wait 30 seconds for dial tone.

      *DD8       Modem will wait 40 seconds for dial tone.

      *DD9       Modem will wait according to register S7.

                            DIAL TYPE SELECTION

  Type:          Configuration

  Format:        AT [cmds] *PTn [cmds]

  Example:       AT *PT0 D555-1212<CR>

  Description:   Selects which type of dialing will be used as default.

    Command                              Function

      *PT0       Tone dialing will be used as default.

      *PT1       Pulse dialing will be used as default.

      *PT2       Attempt to use tone dialing; if this fails, use pulse
                 dialing.

                         DIAL STORED PHONE NUMBER

  Type:          Immediate

  Format:        AT [cmds] *DSn

  Example:       ATM0 *DS5<CR>

  Description:   Dials a stored phone number.

                          DISCONNECT BUFFER MODE

  Type:             Configuration

  Format:           AT [cmds] *DBn [cmds]

  Example:          AT *DB0<CR>

  Description:      Configures when the modem will disconnect if there is
                    data in the transmit or receive buffers.

      Command                             Function

       *DB0         Modem will disconnect immediately.

       *DB1         Modem will disconnect after time in S38 or when
                    buffers have emptied, whichever occurs first.

       *DB2         Modem will wait until buffers have emptied, then
                    disconnect after time in S38.

       *DB3         Modem will disconnect after time in S38.

                            DISCONNECT SEQUENCE

  Type:          Configuration

  Format:        AT [cmds] *MDn [cmds]

  Example:       AT *MD0 <CR>

  Description:   Selects whether the modem will inform the remote modem
                 before disconnecting.

    Command                              Function

      *MD0       Modem disconnects without signalling the remote modem.

      *MD1       Modem signals the remote modem to disconnect.

                          DISPLAY STORED NUMBERS

  Type:                Immediate

  Format:              AT [cmds] *NDn [cmds]

  Example:             AT*CN3,555-1212 *ND<CR>

  Description:         Displays the phone number in the memory location
                       indicated. If no location is indicated they will
                       all be displayed.

                                DSR SIGNAL

  Type:          Configuration

  Format:        AT [cmds] *MRn [cmds]

  Example:       AT *MR0<CR>

  Description:   Selects the function of the DSR signal.

    Command                              Function

      *MR0       DSR normal.

      *MR1       DSR forced high.

      *MR2       DSR follows DTR.

      *MR3       DSR normal, except forced low on disconnect.

      *MR4       DSR follows DTR, except forced low on disconnect.

                             DTR CHANGE DELAY

  Type:          Configuration

  Format:        AT [cmds] *DTn [cmds]

  Example:       AT*DT0 S25=2<CR>

  Description:   Sets maximum time a change in the DTR signal will be
                 ignored.

    Command                              Function

      *DT0       DTR will be ignored according to register S25.

      *DT1       DTR will be ignored for 10 seconds.

      *DT2       DTR will be ignored for 15 seconds.

                                DTR DIALING

  Type:          Configuration

  Format:        AT [cmds] *DAn [cmds]

  Example:       AT *DA1 DT555-1212<CR>

  Description:   Sets the DTR dialing function to dial the number at
                 memory location n.

                                DTR SIGNAL

  Type:                Configuration

  Format:              AT [cmds] &Dn [cmds]

  Example:             AT &D1<CR>

  Description:         Configures the behavior of the Data Terminal Ready
                       signal.

       Command                              Function

         &D0           DTR forced high.

         &D1           Modem will enter command mode on low DTR.

         &D2           Modem will disconnect on low DTR.

         &D3           Modem will disconnect and reset on low DTR.

         &D4           DTR dialing enabled.

         &D5           On high DTR, modem will answer an incoming call,
                       or enable DTR dialing if no call is detected.
                       Modem will disconnect on low DTR.

         &D6           On low DTR, modem will disconnect and will not
                       dial or answer an incoming call until DTR is high
                       again.

                      ERROR CORRECTION IDENTIFICATION

  Type:             Configuration

  Format:           AT [cmds] *SLn [cmds]

  Example:          AT *EC1 *SL1<CR>

  Description:      Selects what type of error correction the modem will
                    identify itself with to remote modems.

     Command                              Function

       *SL0         Modem will identify itself as MNP5 modem.

       *SL1         Modem will identify itself as Motorola Codex modem.

                           ERROR CORRECTION MODE

  Type:          Configuration

  Format:        AT [cmds] *ECn [cmds]

  Example:       AT *EC0 *DC1 *AP0<CR>

  Description:   Selects active error correction protocols.

    Command                              Function

      *EC0       MNP and LAPM enabled.

      *EC1       LAPM only enabled.

      *EC2       MNP only enabled.

                          EXTERNAL INITIALIZATION

  Type:          Configuration

  Format:        AT [cmds] *OPn [cmds]

  Example:       AT *OC1 *OP14 <CR>

  Description:   Selects the profiles for the external initialization
                 function.

    Command                              Function

      *OP0       External initialization disabled.

      *OP1       Select profile 2 on low signal, and profile 1 on high
                 signal.

      *OP2       Select profile 3 on low signal, and profile 1 on high
                 signal.

      *OP3       Select profile 4 on low signal, and profile 1 on high
                 signal.

      *OP4       Select profile 1 on low signal, and profile 2 on high
                 signal.

      *OP5       Select profile 3 on low signal, and profile 2 on high
                 signal.

      *OP6       Select profile 4 on low signal, and profile 2 on high
                 signal.

      *OP7       Select profile 1 on low signal, and profile 3 on high
                 signal.

      *OP8       Select profile 2 on low signal, and profile 3 on high
                 signal.

      *OP9       Select profile 4 on low signal, and profile 3 on high
                 signal.

     *OP10       Select profile 1 on low signal, and profile 4 on high
                 signal.

     *OP11       Select profile 2 on low signal, and profile 4 on high
                 signal.

     *OP12       Select profile 3 on low signal, and profile 4 on high
                 signal.

                    EXTERNAL INITIALIZATION PIN SELECT

  Type:          Configuration

  Format:        AT [cmds] *OCn [cmds]

  Example:       AT *OC1 *OP14 <CR>

  Description:   Selects which pin will control the external
                 initialization function.

    Command                              Function

      *OC0       External initialization controlled by pin 14.

      *OC1       External initialization controlled by pin 20.

                               FLOW CONTROL

  Type:          Configuration

  Format:        AT [cmds] *MFn [cmds]

  Example:       AT *MF1 *DF1 *FL5<CR>

  Description:   Selects flow control.

    Command                              Function

      *MF0       Flow control disabled.

      *MF1       Flow control enabled.

                             FLOW CONTROL TYPE

  Type:          Configuration

  Format:        AT [cmds] *FLn [cmds]

  Example:       AT *MF1 *DF1 *FL5<CR>

  Description:   Sets type of flow control used by modem.

    Command                              Function

      *FL0       Flow control disabled.

      *FL1       XON/XOFF flow control enabled.

      *FL2       CTS/DTR flow control enabled.

      *FL3       CTS/RTS flow control enabled.

      *FL4       XON/XOFF pass-through flow control enabled.

      *FL5       Synchronous transmit clock signal flow control enabled.

                             HANDSHAKE OPTIONS

  Type:          Configuration

  Format:        AT [cmds] *FCn [cmds]

  Example:       AT *FC0<CR>

  Description:   Disables various parts of the handshake sequence.

    Command                              Function

      *FC0       Normal handshake sequence.

      *FC1       Billing delay removed and auto-baud tone shortened by 1
                 second.

      *FC2       *FC1 plus training time is shortened by 2 seconds in
                 V.32 and V.32bis modes.

      *FC3       *FC2 plus negotiation of error correction and
                 compression is removed.

                             INACTIVITY TIMER

  Type:             Configuration

  Format:           AT [cmds] *SIn [cmds]

  Example:          AT *SI5 S30=40<CR>

  Description:      Sets the length of time that the modem does not
                    receive information before it disconnects.

     Command                              Function

       *SI0         Inactivity timer disabled.

       *SI1         Modem will disconnect after 3 minutes of inactivity.

       *SI2         Modem will disconnect after 10 minutes of inactivity.

       *SI3         Modem will disconnect after 20 minutes of inactivity.

       *SI4         Modem will disconnect after 30 minutes of inactivity.

       *SI5         Modem will disconnect according to register S30.

                LEASED LINE BACKUP - HOLD BACKUP CONNECTION

  Type:           Configuration

  Format:         AT [cmds] *HDn [cmds]

  Example:        AT *HD2 <CR>

  Description:    Configures modem to hold switched line connection while
                  testing the leased line.

    Command                              Function

      *HD0        Do not hold connection.

      *HD1        Hold connection for 1 minute.

      *HD2        Hold connection for 2 minutes.

      *HD3        Hold connection for 3 minutes.

      *HD4        Hold connection for 4 minutes.

      *HD5        Hold connection for 5 minutes.

                   LEASED LINE BACKUP - RESTORAL OPTIONS

  Type:          Configuration

  Format:        AT [cmds] *REn [cmds]

  Example:       AT *RE0 D555-1212<CR>

  Description:   Selects what will initiate the restoral of a leased line
                 connection.

    Command                              Function

      *RE0       Restoral disabled.

      *RE1       Modem will restore connection only when the Talk/Data
                 button is pressed.

      *RE2       Modem will restore connection when DTR signal goes high.

      *RE3       Modem will restore connection when ITU-T circuit 116
                 goes high.

      *RE4       Modem will restore connection automatically.

      *RE5       Modem will enable command set when DTR signal goes high.

      *RE6       Modem will enable command set when ITU-T circuit 116
                 goes high.

                      LEASED LINE BACKUP RETURN TIME

  Type:            Configuration

  Format:          AT [cmds] *LEn [cmds]

  Example:         AT*LE1<CR>

  Description:     Sets the amount of time until the modem will reconnect
                   to the leased line connection.

     Command                              Function

      *LE0         Modem will reconnect when the Talk/Data button is
                   pressed.

      *LE1         Modem will reconnect after 15 minutes.

      *LE2         Modem will reconnect after 30 minutes.

      *LE3         Modem will reconnect after 1 hour.

      *LE4         Modem will reconnect after 2 hours.

      *LE5         Modem will reconnect after 4 hours.

                       LEASED LINE BACKUP THRESHHOLD

  Type:                Configuration

  Format:              AT [cmds] *DIn [cmds]

  Example:             AT *DI1 O<CR>

  Description:         Sets the number of retrains at which the modem
                       will initiate a leased-line backup procedure.

       Command                              Function

         *DI0          Backup initiated after 3 retrains in 5 minutes at
                       high-speed connection, or 6 retrains in 5 minutes
                       for low-speed connection.

         *DI1          Backup initiated after 6 retrains in 10 minutes at
                       high-speed connection, or 12 retrains in 10
                       minutes for low-speed connection.

         *DI2          Backup initiated after 5 retrains in 5 minutes at
                       high-speed connection, or 10 retrains in 5 minutes
                       for low-speed connection.

         *DI3          Backup initiated after 10 retrains in 10 minutes
                       at high-speed connection, or 20 retrains in 10
                       minutes for low-speed connection.

                                 LINE TYPE

  Type:          Configuration

  Format:        AT [cmds] &Ln [cmds]

  Example:       AT &L2 H1 DT555-1212<CR>

  Description:   Selects line type.

    Command                              Function

      &L0        Switched line.

      &L1        2-wire leased line.

      &L2        4-wire leased line.

                            LINK STORED NUMBERS

  Type:                Configuration

  Format:              AT [cmds] *LNm,n [cmds]

  Example:             AT *LN1,2 <CR>

  Description:         Links two stored phone numbers in sequence so that
                       if one fails, the next one will be dialed. If the
                       second number is omitted, the link from the first
                       number will be cleared.

                          LOCAL SERIAL PORT SPEED

  Type:          Configuration

  Format:        AT [cmds] *DEn [cmds]

  Example:       AT *DE16 *OS0 *SC1<CR>

  Description:   Sets serial port speed.

    Command                              Function

      *DE2       Sets 300bps speed.

      *DE3       Sets 600bps speed.

      *DE4       Sets 1200bps speed.

      *DE5       Sets 2400bps speed.

      *DE6       Sets 4800bps speed.

      *DE7       Sets 7200bps speed.

      *DE8       Sets 9600bps speed.

      *DE9       Sets 12Kbps speed.

     *DE10       Sets 14.4Kbps speed.

     *DE11       Sets 16.8Kbps speed.

     *DE12       Sets 19.2Kbps speed.

     *DE13       Sets 21.6Kbps speed.

     *DE14       Sets 24Kbps speed.

     *DE15       Sets 38.4Kbps speed.

     *DE16       Sets 57.6Kbps speed.

     *DE17       Sets 64Kbps speed.

     *DE18       Sets 72Kbps speed.

     *DE19       Sets 76.8Kbps speed.

     *DE20       Sets 96Kbps speed.

     *DE21       Sets 115.2Kbps speed.

     *DE22       Sets speed automatically.

     *DE23       Sets 48Kbps speed.

     *DE24       Sets 56Kbps speed.

     *DE25       Sets 26.4Kbps speed.

     *DE26       Sets 28.8Kbps speed.

     *DE28       Sets 128Kbps speed.

                      LOCAL SERIAL PORT SPEED ADJUST

  Type:          Configuration

  Format:        AT [cmds] *OSn [cmds]

  Example:       AT *DE16 *OS0 *SC 1<CR>

  Description:   Sets the maximum amount to adjust the local serial port
                 speed by.

    Command                              Function

      *OS0       Adjust local serial port speed by no more than -1%.

      *OS1       Adjust local serial port speed by no more than -2.5%.

                             LOCK SERIAL PORT

  Type:          Configuration

  Format:        AT [cmds] *SCn [cmds]

  Example:       AT *DE16 *OS0 *SC1<CR>

  Description:   Sets operation of serial port speed.

    Command                              Function

      *SC0       Serial speed follows connect speed.

      *SC1       Serial speed locked.

                          LOOPBACK TEST ON PIN 18

  Type:             Configuration

  Format:           AT [cmds] *LAn [cmds]

  Example:          AT*LA0<CR>

  Description:      Controls whether the modem will perform a local
                    analog loopback test when pin 18 goes high.

     Command                              Function

       *LA0         Pin 18 has no function.

       *LA1         Pin 18 going high causes the modem to perform local
                    analog loopback test.

                          LOOPBACK TEST ON PIN 21

  Type:             Configuration

  Format:           AT [cmds] *LDn [cmds]

  Example:          AT*LD0<CR>

  Description:      Controls whether the modem will perform a remote
                    digital loopback test when pin 21 goes high.

      Command                             Function

       *LD0         Pin 21 has no function.

       *LD1         Pin 21 going high causes the modem to perform remote
                    digital loopback test.

                           NETWORK OPTIMIZATION

  Type:              Configuration

  Format:            AT [cmds] *NCn [cmds]

  Example:           AT *NC0<CR>

  Description:       Selects options to make the modem operate more
                     efficiently when using the network control option.

      Command                              Function

       *NC0          Normal operation.

       *NC1          Level 1 optimization; limits serial port rate to
                     21.6Kbps.

       *NC2          Level 2 optimization; limits serial port rate to
                     19.2Kbps.

                              NRZI INTERFACE

  Type:          Configuration

  Format:        AT [cmds] *DFn [cmds]

  Example:       AT *MF1 *DF1 *FL5<CR>

  Description:   Configures DTE non return to zero interface.

    Command                              Function

      *DF0       NRZ command and connect modes.

      *DF1       NRZI command and connect modes.

                                  PARITY

  Type:          Configuration

  Format:        AT [cmds] *RPn [cmds]

  Example:       AT *RP0 *SM1<CR>

  Description:   Sets the parity of the modem.

    Command                              Function

      *RP0       Parity determined by V.25bis settings.

      *RP1       Even parity.

      *RP2       Odd parity.

      *RP3       MARK parity.

      *RP4       SPACE parity.

                                 PROTOCOL

  Type:          Configuration

  Format:        AT [cmds] *LSn [cmds]

  Example:       AT *LS1 <CR>

  Description:   Selects the protocol for low-speed data calls.

    Command                              Function

      *LS0       Bell protocols.

      *LS1       ITU-T protocols.

                              PROTOCOL/SPEED

  Type:          Configuration

  Format:        AT [cmds] *MMn [cmds]

  Example:       AT *MN6 *MX14 *MM11<CR>

  Description:   Selects the current protocol.

    Command                              Function

      *MM0       Selects V.32bis and below.

      *MM1       Selects V.32 and below.

      *MM2       Selects V.32bis and V.32.

      *MM3       Selects V.32 only.

      *MM4       Selects V.22bis only.

      *MM5       Selects Bell 212 only.

      *MM6       Selects Bell 103 only.

      *MM7       Selects V.21 only.

     *MM10       Selects all protocols.

     *MM11       Selects V.34 only.

     *MM12       Selects non-TCM V.32 only.

                        RECEIVE LEVEL COMPENSATION

  Type:          Configuration

  Format:        AT [cmds] *LCn [cmds]

  Example:       AT*LC1<CR>

  Description:   Allows the modem to compensate for lossy line
                 conditions.

    Command                              Function

      *LC0       Compensation disabled.

      *LC1       Compensation enabled.

                                  REDIAL

  Type:               Configuration

  Format:             AT [cmds] *DRn [cmds]

  Example:            AT *DR20 DT1 (303) 443-3388<CR>

  Description:        Sets the number of times the modem will attempt to
                      redial a number. A value of 0 will disable redial.

                            REDIAL LAST NUMBER

  Type:          Immediate

  Format:        AT [cmds] *RDn

  Example:       AT *RD20<CR>

  Description:   Redials last number dialed the number of times
                 specified.

                           REMOTE CONFIGURATION

  Type:          Configuration

  Format:        AT [cmds] *RCn [cmds]

  Example:       AT *RC0 D555-1212<CR>

  Description:   Initiates and ends remote configuration sessions.

    Command                              Function

      *RC0       Quits the current remote configuration session and saves
                 changes.

      *RC1       Quits the current remote configuration session without
                 saving.

      *RC2       Attempts to initiate a remote configuration session.

                      REMOTE CONFIGURATION PERMISSION

  Type:          Configuration

  Format:        AT [cmds] *RAn [cmds]

  Example:       AT *RA0 D555-1212<CR>

  Description:   Selects whether remote modems may configure the local
                 modem.

    Command                              Function

      *RA0       Remote configuration requests will be denied.

      *RA1       Remote configuration requests will be allowed.

                          REMOTE RTS/CD SIGNALING

  Type:          Configuration

  Format:        AT [cmds] *SRn [cmds]

  Example:       AT &C3 *RS1 *SR1<CR>

  Description:   Selects what type of remote RTS/CD signaling the modem
                 will use.

    Command                              Function

      *SR0       Modem will use Motorola Codex signaling.

      *SR1       Modem will use ITU-T V.13 signaling.

                            RETRAIN SENSITIVITY

  Type:                Configuration

  Format:              AT [cmds] *RTn [cmds]

  Example:             AT &C3 *RT1<CR>

  Description:         Sets how poor line conditions must be before the
                       modem will initiate a retrain.

       Command                              Function

         *RT0          Modem will not initiate retrain.

         *RT1          Modem will initiate retrain when the Bit Error
                       Rate exceeds 10-4 for eight seconds, or for one
                       second in V.22bis mode.

         *RT2          Modem will initiate retrain when the Bit Error
                       Rate exceeds 10-3 for eight seconds, or for one
                       second in V.22bis mode.

                            REPORT INFORMATION

  Type:          Immediate

  Format:        AT [cmds] &In [cmds]

  Example:       AT &I1 &W<CR>

  Description:   Displays modem properties.

    Command                              Function

      &I0        Reports modem firmware revision.

      &I1        Reports factory product code.

      &I2        Reports modem country code.

      &I3        Reports product code.

      &I4        Reports network address.

      &I5        Reports serial number.

               REPORT INFORMATION AND CONFIGURATION PROFILE

  Type:            Immediate

  Format:          AT [cmds] &Vn [cmds]

  Example:         AT &V0<CR>

  Description:     Reports active configuration profile and other
                   information.

     Command                              Function

       &V0         Report active configuration profile, connection
                   status, and internal modem information.

       &V1         Report active configuration profile.

                           RESULT CODE - DTE/DCE

  Type:          Configuration

  Format:        AT [cmds] *CMn [cmds]

  Example:       AT X4 *CM0<CR>

  Description:   Selects whether modem will display DTE or DCE speed in
                 the result code.

    Command                              Function

      *CM0       Modem will display DTE speed.

      *CM1       Modem will display DCE speed.

                        RESULT CODE - RELIABLE MODE

  Type:          Immediate

  Format:        AT [cmds] *XCn [cmds]

  Example:       AT *XC0<CR>

  Description:   Configures result codes for reliable mode.

    Command                              Function

      *XC0       Reliable mode result codes disabled.

      *XC1       Short reliable mode result codes.

      *XC2       Long reliable mode result codes.

                                RTS SIGNAL

  Type:          Configuration

  Format:        AT [cmds] *RSn [cmds]

  Example:       AT &C3 *RS1 *SR1<CR>

  Description:   Configures the behavior of the Ready to Send signal.

    Command                              Function

      *RS0       RTS normal.

      *RS1       RTS forced high.

      *RS2       RTS follows remote CD signal.

                          SDC MODE WAIT FOR FRAME

  Type:              Immediate

  Format:            AT [cmds] *TDn [cmds]

  Example:           AT *TD0<CR>

  Description:       Selects whether the modem will wait for the end of a
                     frame it is receiving before transmitting.

      Command                              Function

       *TD0          Modem will wait for end of frame.

       *TD1          Modem will begin transmission before the end of a
                     frame by using the clock signal.

       *TD2          Modem will begin transmission before the end of a
                     frame by using a calculated time delay.

                              SETUP PASSWORD

  Type:             Configuration

  Format:           AT [cmds] *PWxxxx/yyyy [cmds]

  Example:          AT *PWMicroHouse/FuBaR *PE0 *PF<CR>

  Description:      Changes the modems password. xxxx represents the old
                    password, and yyyy represents the new.

                           SETUP PASSWORD ENABLE

  Type:          Configuration

  Format:        AT [cmds] *PEn [cmds]

  Example:       AT *PWMicroHouse/FuBaR *PE0 *PF<CR>

  Description:   Enables the password function to lock the modems
                 settings.

    Command                              Function

      *PE0       Setup password function disabled.

      *PE1       Setup password function enabled.

                            SETUP PASSWORD LOCK

  Type:          Configuration

  Format:        AT [cmds] *PF [cmds]

  Example:       AT *PWMicroHouse/FuBaR *PE0 *PF<CR>

  Description:   Locks the modems settings.

                           SETUP PASSWORD UNLOCK

  Type:          Configuration

  Format:        AT [cmds] *PNxxxx [cmds]

  Example:       AT *PNFuBaR<CR>

  Description:   Unocks the modems settings.

                        STORE PHONE NUMBER IN NVRAM

  Type:          Configuration

  Format:        AT [cmds] *CNn,<#>

  Example:       AT*CN3,555-1212 *ND<CR>

  Description:   Stores a phone number in the modems memory.

                          TEST/BUSY OUT ON PIN 25

  Type:          Configuration

  Format:        AT [cmds] *LTn [cmds]

  Example:       AT *LT0 <CR>

  Description:   Configures pin 25 for testing or busy out.

    Command                              Function

      *LT0       Enable busy out when pin 25 is high.

      *LT1       Self test is in progress when pin 25 is high.

                             TOUCH-TONE LENGTH

  Type:          Immediate

  Format:        AT [cmds] *TLn [cmds]

  Example:       AT *TL0<CR>

  Description:   Determines how long the modem will dial a touch-tone
                 digit.

    Command                              Function

      *TL0       Modem will dial each digit for 72ms.

      *TL1       Modem will dial according to register S11.

                           V.32 NEGOTIATION MODE

  Type:             Configuration

  Format:           AT [cmds] *AYn [cmds]

  Example:          AT *AY0 H1 DT555-1212<CR>

  Description:      Selects how the modem negotiates V.32 modulation
                    during handshaking.

     Command                              Function

       *AY0         If V.32 tone is not detected during answer-back tone,
                    modem will negotiate down to V.22bis.

       *AY1         Modem will continue attempting to negotiate V.32
                    after answer-back tone.

