
PROMETHEUS PRODUCTS, INC.

MAC PROMODEM 288E

Card Type                    Fax, Modem (synchronous/asynchronous)
Chip Set                     Unidentified
Maximum Data Rate            28.8Kbps
Maximum Fax Rate             14.4Kbps
Data Bus                     External
Fax Class                    Class I & II
Data Modulation Protocol     Bell 103/212A

                             ITU-T V.21, V.22, V.22bis, V.23, V.32,
                             V.32bis, V.34
Fax Modulation Protocol      ITU-T V.17, V.21CH2, V.27ter, V.29, V.33
Error Correction/Compression MNP5, MNP10, V.42, V.42bis

[Image]

                                CONNECTIONS

        Function           Label             Function              Label

  Line in                       CN1      RS-232/422                 CN3

  Line out                      CN2      DC power                   CN4

                             DIAGNOSTIC LED(S)

   LED       Color      Status                   Condition

    MR        Red         On                   Modem is ready

    MR        Red         Off                 Self-test failed

    MR        Red       Blinking           Self-test in progress

    HS        Red         On         Modem is operating at highest speed
                                                 available

    HS        Red         Off        Modem is operating at slower speed
                                                 available

    AA        Red         On                Auto-answer enabled

    AA        Red         Off               Auto-answer disabled

    CD        Red         On              Carrier signal detected

    CD        Red         Off           Carrier signal not detected

    OH        Red         On                 Modem is off-hook

    OH        Red         Off                 Modem is on-hook

    SD        Red         On             Modem is transmitting data

    SD        Red         Off          Modem is not transmitting data

    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

   PWR        Red         On                    Power is on

   PWR        Red         Off                   Power is off

                         Proprietary AT Command Set

                 AUTO-RETRAIN - AUTO-FALLBACK/FALL-FORWARD

  Type:          Configuration

  Format:        AT [cmds] %En [cmds]

  Description:   Controls auto-retrain mode and fallback/fall-forward

    Command                              Function

      %E0        Auto-retrain disabled

      %E1        Auto-retrain enabled

      %E2        Auto-fallback/fall-forward enabled

  BIT MAPPED REGISTERS

  Register     Default

    S14          138

    S16           0

    S21           4

    S22          117

    S23          55

    S27          73

    S28           0

    S31           2

    S39           3

    S40          105

    S41           3

    S201         58

                                BREAK SEND

  Type:          Configuration

  Format:        AT [cmds] \Bn [cmds]

  Default:       3

  Range:         1-9

  Unit:          .1 second

  Description:   Sends break to modem

                                BREAK TYPE

  Type:                    Configuration

  Format:                  AT [cmds] \Kn [cmds]

  Description:             Configures action of break signal

     Command       Break from DTE     Modem receives      Break received
                                            \B          from remote modem

       \K0        Online command     Break sent to      Buffers cleared,
                  mode enabled,      remote modem and   break sent to DTE
                  send no break      buffered cleared
                  to remote modem

       \K1        Break sent to      Break sent to      Buffers cleared,
                  remote modem       remote modem and   break sent to DTE
                  and buffered       buffered cleared
                  cleared

       \K2        Online command     Send break to      Break sent
                  mode enabled,      remote modem       immediately to
                  send no break      immediately        DTE
                  to remote modem

       \K3        Send break to      Send break to      Break sent
                  remote modem       remote modem       immediately to
                  immediately        immediately        DTE

       \K4        Online command     Send break with    Break sent with
                  mode enabled,      transmitted data   received data to
                  send no break                         the DTE
                  to remote modem

       \K5        Send break with    Send break with    Break sent with
                  transmitted        transmitted data   received data to
                  data                                  the DTE

                                COMPRESSION

  Type:          Configuration

  Format:        AT [cmds] %Cn [cmds]

  Description:   Selects data compression

    Command                              Function

      %C0        Data compression disabled

      %C1        MNP5 enabled

      %C2        V.42bis enabled

      %C3        MNP5 and V.42bis enabled

                               CONNECT MODE

  Type:          Configuration

  Format:        AT [cmds] \Nn [cmds]

  Description:   Controls the type of connection the modem will operate
                 in

    Command                              Function

      \N0        Normal mode enabled

      \N1        Direct mode enabled

      \N2        Reliable mode enabled

      \N3        Auto-reliable mode enabled

      \N4        V.42 reliable mode enabled

      \N5        MNP auto-reliable mode enabled

                                   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.

        Modifier                             Function

           L             Re-dial last number

           P             Pulse dialing enabled

           R             Accepted but not acted upon

          S=n            Dial stored telephone number n

           T             Tone dialing enabled

           W             Dialing resumed following dial tone detection

           *             Dials the Star digit

           #             Dials the Gate digit

           !             Modem commanded to go off-hook for specified
                         time before returning on-hook

           @             Wait for quiet answer

           &             Waits for prompt tone for amount of time
                         specified by the S7 register

           ,             Dialing paused for amount of time specified in
                         S8 register

           ;             Modem returned to command state after dialing

           ^             Disable calling tone

           >             Country specific, generates grounding pulse

                         FLASH DIAL MODIFIER TIME

  Type:                Register

  Format               AT [cmds] S29=n [cmds]

  Default:             0

  Range:               0-255

  Unit:                .01 second

  Description:         Time the modem will go on-hook upon receiving the
                       ! dial modifier in dial string.

                       FLOW CONTROL CHARACTER - XOFF

  Type:          Register

  Format:        AT [cmds] S33=n [cmds]

  Default:       19

  Range:         0-255

  Unit:          ASCII

  Description:   Sets the character used to represent XOFF

                       FLOW CONTROL CHARACTER - XON

  Type:          Register

  Format:        AT [cmds] S32=n [cmds]

  Default:       17

  Range:         0-255

  Unit:          ASCII

  Description:   Sets the character used to represent XON

                             INACTIVITY TIMER

  Type:                  Register

  Format                 AT [cmds] S30=n [cmds]

  Default:               0

  Range:                 0-255

  Unit:                  10 seconds

  Description:           Maximum duration of DTE and DCE inactivity
                         allowed prior to initiating hang-up process.

                             LINE SIGNAL LEVEL

  Type:             Immediate

  Format:           AT [cmds] %L [cmds]

  Description:      Returns a value which indicates the received line
                    signal level in -dBm

                            LINE SIGNAL QUALITY

  Type:          Immediate

  Format:        AT [cmds] %Q [cmds]

  Description:   Returns a value which indicates line signal quality

                    MAXIMUM BLOCK SIZE FOR TRANSMISSION

  Type:          Configuration

  Format:        AT [cmds] \An [cmds]

  Description:   Sets the maximum transmittable block size

    Command                              Function

      \A0        MNP block size is 64 characters

      \A1        MNP block size is 128 characters

      \A2        MNP block size is 192 characters

      \A3        MNP block size is 256 characters

                          MNP - EXTENDED SERVICES

  Type:                 Configuration

  Format:               AT [cmds] -Kn [cmds]

  Description:          Selects MNP extended services

       Command                              Function

         -K0            MNP extended services disabled

         -K1            MNP extended services enabled

         -K2            MNP extended services enabled without indicating
                        MNP on the answer detection phase.

                             MNP10 - FALLBACK

  Type:          Configuration

  Format:        AT [cmds] -Qn [cmds]

  Description:   Allows MNP10 to fall back to speeds slower than 4800bps

    Command                              Function

      -Q0        MNP10 at 2400 and 1200bps disabled

      -Q1        MNP10 at 2400 and 1200bps enabled

                         MNP10 - LINK NEGOTIATION

  Type:          Configuration

  Format:        AT [cmds] *Hn [cmds]

  Description:   Sets the speed at which MNP10 link negotiation will
                 occur

    Command                              Function

      *H0        Link will be negotiated at highest possible speed

      *H1        Link will be negotiated at 1200bps

      *H2        Link will be negotiated at 4800bps

                        MNP10 - POWER LEVEL ADJUST

  Type:                Configuration

  Format:              AT [cmds] )Mn [cmds]

  Description:         Controls automatic transmit power level adjustment
                       during MNP 10 link negotiation

       Command                              Function

         )M0           Power level adjustment disabled

         )M1           Power level adjustment enabled, power level
                       determined by modem

         )M2           Power level adjustment enabled, power level
                       remains fixed

                            REPORT INFORMATION

  Type:          Immediate

  Format:        AT [cmds] In [cmds]

  Description:   Displays information requested

    Command                              Function

       I0        Reports product code

       I1        Reports ROM checksum

       I2        Reports ROM checksum

       I3        Reports product revision code

       I4        Reports product ID

       I5        Reports country code

       I6        Reports modem data pump version number

       I7        Reports DAA code from MCU interrogation

                                SLEEP TIMER

  Type:                   Register

  Format                  AT [cmds] S24=n [cmds]

  Default:                0

  Range:                  0-255

  Unit:                   1 second

  Description:            Maximum duration of DTE and DCE inactivity
                          allowed prior to initiating low-power sleep
                          mode.

                       TRANSMISSION LEVEL - CELLULAR

  Type:           Configuration

  Format:         AT [cmds] @Mn [cmds]

  Default:        0

  Range:          11-31

  Unit:           -1dBm

  Description:    Sets the signal level for transmission while in
                  cellular mode

    Command                              Function

      @M0         -26 dBm

      @M1         -30 dBm

    @M2-@M10      -10 dBm

                         TRANSMISSION LEVEL - FAX

  Type:          Register

  Format:        AT [cmds] S92=n [cmds]

  Default:       10

  Range:         0-15

  Unit:          -1 dBm

  Description:   Sets the signal level for transmission while in fax mode

                        TRANSMISSION LEVEL - PSTN

  Type          Register or Configuration

  Format        AT [cmds] S91=n [cmds]

  Default       10

  Range         0-15

  Unit          -1 dBm

  Description   Sets the signal level for transmission over PSTN

                        V.32 - COMPROMISE EQUALIZER

  Type:          Configuration

  Format:        AT [cmds] :En [cmds]

  Description:   Controls V.32 compromise equalizer

    Command                              Function

      :E0        Equalizer disabled

      :E1        Equalizer enabled

