
PHILIPS CONSUMER ELECTRONICS, CO.

PCA28EM (USA)

Card Type                    Modem
Chip Set                     Unidentified
I/O Options                  Line out, line in, 25-pin DTE port, power
Maximum Modem Rate           115.2Kbps
Maximum Fax Rate             14.4Kbps
Data Modulation Protocol     Bell 103/212A

                             ITU-T V.22, V.22bis, V.32, V.32bis, V.34,
                             V.FC
Fax Modulation Protocol      ITU-T V.17, V.27ter, V.29
Error Correction/Compression MNP5, V.42, V.42bis
Fax Class                    Class I & II
Data Bus                     External

[Image]

                                CONNECTIONS

         Function            Label            Function             Label

  Line out (RJ-11)               CN1       Power                    CN4

  Line in (RJ-11)                CN2       Power switch             SW1

  25-pin DTE port                CN3



                             DIAGNOSTIC LED(S)

  LED         Color          Status                 Condition

   MR     Unidentified         On                  Power is on

   MR     Unidentified        Off                 Power is off

   TR     Unidentified         On              DTR signal is high

   TR     Unidentified        Off               DTR signal is low

     SD       Unidentified       On         Modem is transmitting data

     SD       Unidentified      Off       Modem is not transmitting data

     RD       Unidentified       On          Modem is receiving data

     RD       Unidentified      Off        Modem is not receiving data

     OH       Unidentified       On             Modem is off hook

     OH       Unidentified      Off              Modem is on hook

   CD     Unidentified         On        Carrier signal detected or error
                                         correction negotiation completed

   CD     Unidentified        Off          Carrier signal not detected

   AA     Unidentified         On              Auto-answer enabled

   AA     Unidentified        Off             Auto-answer disabled

   AA     Unidentified      Blinking         Incoming ring detected

   HS     Unidentified         On         Mdem is connected at 28.8Kbps

   HS     Unidentified        Off           Modem is not connected or
                                          connected at speed lower than
                                                    28.8Kbps

  TST     Unidentified         On           Normal operation; no error
                                                    detected

  TST     Unidentified        Off         Error detected and corrected

                           SUPPORTED COMMAND SET

                             Basic AT Commands

  AT, +++, A/

  A, E, H, M, P, T, V, X, Y, Z

  &C, &G, &M, &R, &T, &V, &W, &X, &Z

                           Extended AT Commands

  %A, %C

  \A, \B, \C, \E, \G, \J, \K, \O, \Q, \T, \U, \X, \Y, \Z

                                S Registers

  S0, S1, S2, S3, S4, S5, S6, S7, S8, S9,S10, S11, S12, S14, S18, S25,
  S26



  Note: See MHI Help File for full command documentation.

                         PROPRIETARY AT COMMAND SET

                        AUTO-FALLBACK/FALL-FORWARD

  Type:          Configuration

  Format:        AT [cmds] &En [cmds]

  Description:   Controls fallback/fall-forward

    Command                              Function

      &E0        Auto-fallback/fall-forward disabled

      &E1        Auto-fallback/fall-forward enabled



                          COMMUNICATION PROTOCOLS

  Type:                          Configuration

  Format:                        AT [cmds] Bn [cmds]

  Description:                   Selects the communication protocol for
                                 data calls

    Command                 Speed(s)                      Mode(s)

       B0        300bps                            V.21

                 1200bps                           V.22

                 2400bps                           V.22bis, V.22, Bell
                                                   212A
                 4800bps, 9600bps
                                                   V.32, V.22bis, V.22,
                 14.4kbps                          Bell 212A

                 19.2Kbps,28.8Kbps,38.4Kbps,       V.32bis, V.32,
                                                   V.22bis, V.22, Bell
                 57.6kbps, 115Kbps                 212A

                                                   V.34,V.FC, V.32bis,
                                                   V.32, V.22bis, V.22,
                                                   Bell 212A

       B1       300bps                            Bell 103

                 1200bps                           Bell 212A

                 2400bps                           V.22bis, V.22, Bell
                                                   212A
                 4800bps, 9600bps
                                                   V.32, V.22bis, V.22,
                 14.4kbps                          Bell 212A

                 19.2Kbps,28.8Kbps,38.4Kbps,       V.32bis, V.32,
                                                   V.22bis, V.22, Bell
                 57.6kbps, 115Kbps                 212A

                                                   V.34,V.FC, V.32bis,
                                                   V.32, V.22bis, V.22,
                                                   Bell 212A

       B2        Any speed                         V.34,V.FC, V.32bis,
                                                   V.32, V.22bis, V.22,
                                                   Bell 212A

       B3        Any speed                         V.23

       B4        Any speed                         V.21 at 300bps

       B5        Any speed                         V.22 at 1200bps

       B6        Any speed                         V.22bis at 2400bps

       B7        Any speed                         V.32 at 4800bps

       B8        Any speed                         V.32 at 9600bps

       B9        Any speed                         V.32bis at 14.4kbps

      B10        Any speed                         V.34/V.FC at 16.8Kbps

      B11        Any speed                         V.34/V.FC at 19.6Kbps

      B12        Any speed                         V.34/V.FC at 21.6Kbps

      B13        Any speed                         V.34/V.FC at 24.0Kbps

      B14        Any speed                         V.34/V.FC at 26.4Kbps

      B15        Any speed                         V.34/V.FC at 28.8Kbps

                           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

                         DATA TERMINAL READY (DTR)

  Type:          Configuration

  Format:        AT [cmds] &Dn [cmds]

  Description:   Selects modem response to DTR

    Command                              Function

      &D0        DTR ignored

      &D1        DTR toggle causes online command mode

      &D2        DTR toggle causes modem to go on-hook

      &D3        Modem reset on DTR toggle



                                   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

          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@             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.

                          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            Recalls factory defaults with V.42bis error
                         correction and hardware flow control enabled

          &F1            Recalls factory defaults with software flow
                         control enabled

          &F2            Recalls factory defaults with V.42bis error
                         correction and hardware flow control enabled

          &F3            Recalls factory defaults with software flow
                         control enabled. DTR ignored

          &F4            Recalls factory defaults with V.42bis error
                         correction and hardware flow control enabled.
                         DTR ignored

          &F5            Recalls factory defaults with V.42bis error
                         correction and hardware flow control disabled

                                HELP SCREEN

  Type:          Immediate

  Format:        AT [cmds] &Hn [cmds]

  Description:   Displays Help screens on all available commands

                                 LINE TYPE

  Type:          Configuration

  Format:        AT [cmds] &Ln [cmds]

  Description:   Selects line type

    Command                             Line Type

      &L0        Switched line (PSTN/Dial-up)

      &L1        Leased line

      &L2        Power-on leased line



                                  ON-LINE

  Type:           Immediate

  Format:         AT [cmds] On [cmds]

  Description:    Controls on-line command (data transmission) state
                  options.

            Note: The O command must be placed at the end of the command
            string.

     Command                             Function

       O0         On-line command mode with no retraining enabled

       O1         On-line command mode with retraining enabled

       O2         On-line command mode with retraining and fall-forward
                  enabled

       O3         On-line command mode with retraining and fall-back
                  enabled

                            PULSE DIALING RATIO

  Type:          Configuration

  Format:        AT [cmds] &Pn [cmds]

  Description:   Selects pulse dial make/break ratio

    Command                              Function

      &P0        39/61ms at 10pps (North America)

      &P1        33/67ms at 10pps (Europe)

                            REPORT INFORMATION

  Type:          Immediate

  Format:        AT [cmds] In [cmds]

  Description:   Displays information requested

    Command                              Function

       I0        Reports product ID code

       I1        Reports ROM checksum

       I2        Tests and reports ROM checksum

       I3        Reports modems V.42bis ID

       I4        Reports modems internal ID

                               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        Result code sending enabled in originate mode

                              SPEAKER VOLUME

  Type:          Configuration

  Format:        AT [cmds] Ln [cmds]

  Description:   Controls speaker volume

    Command                              Function

       L0        Low volume setting

       L1        Low volume setting

       L2        Medium volume setting

       L3        Highest volume setting





                          EXTENDED AT COMMAND SET

                               AUTO-RETRAIN

  Type:          Configuration

  Format:        AT [cmds] %En [cmds]

  Description:   Controls auto-retrain mode

    Command                              Function

      %E0        Auto-retrain disabled

      %E1        Auto-retrain enabled

                             CLEAR-DOWN SIGNAL

  Type:           Configuration

  Format:         AT [cmds] %Dn [cmds]

  Description:    Enables/disables clear down signal to expidate
                  disconnection

    Command                              Function

      %D0         Clear-down signal disabled

      %D1         Clear-down signal 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        MNP reliable mode enabled

      \N3        Auto-reliable mode enabled

      \N4        V.42 reliable mode enabled

      \N5        V.42/MNP mode enabled

      \N6        V.42/MNP/Normal mode enabled

                           EXTENDED RESULT CODES

  Type:          Configuration

  Format:        AT [cmds] \Vn [cmds]

  Description:   Selects extended result codes

    Command                              Function

      \V0        DCE speed displayed; extended result codes disabled

      \V1        DCE speed displayed; extended result codes enabled

      \V2        DTE speed displayed; extended result codes disabled

      \V3        DTE speed displayed; extended result codes enabled



                            PASSWORD SELECTION

  Type:                   Immediate

  Format:                 AT [cmds] \P=n [cmds]

  Unit:                   ASCII

  Description:            Stores passwords in modems NVRAM. Password is
                          a case sensitive 7 digit string. Modem is
                          factory set with no password stored. \P=?
                          displays password

                           POWER-ON AUTO CONNECT

  Type:          Configuration

  Format:        AT [cmds] %Pn [cmds]

  Description:   Enables/disables power-on auto connect

    Command                              Function

      %P0        Power-on auto connect disabled

      %P1        Power-on auto connect enabled

                             SECURITY CALLBACK

  Type:          Configuration

  Format:        AT [cmds] %Sn [cmds]

  Description:   Controls password check and callback security features

    Command                              Function

      %S0        Password check and callback security features disabled

      %S1        Password check and callback security features enabled

      %S2        Password check enabled. Callback disabled

                            S(status) -REGISTERS

                          BIT-MAPPED REGISTER S14

  Format:             AT [cmds] S14=n [cmds]

  Range:              0-174

  Unit:               Bit-mapped

  Description:        Controls echo, result codes and display, dial mode,
                      and answer/originate mode.

   Bit       Value                         Function

    0              0  Command echo disabled

                  1   Command echo enabled

    1             00  Result codes enabled

                  01  Result codes disabled

                 11   Result code sending enabled in originate mode

    2             0   Not used

    3              0  Display result codes in numeric format

                  1   Display result codes in verbose format

    4              0  Smart mode

                  1   Dumb mode

    5              0  Tone dial enabled

                  1   Pulse dial enabled

    6              0  Restore profile 0 on power-up

                  1   Restore profile 1 on power-up

    7           0 1   Answer mode enabled

                      Originate mode enabled



                          BIT-MAPPED REGISTER S16

  Type:                Register

  Format:              AT [cmds] S16=n [cmds]

  Range:               0-125

  Unit:                Bit-mapped

  Description:         Controls loopback tests, clear-down signal,
                       retraining, and result code sending

    Bit      Value                          Function

     0             0   Remote digital loopback not requested

                  1    Remote digital loopback requested

     1             0   Clear-down signal disabled

                  1    Clear-down signal enabled

     2             0   Retraining disabled

                  1    Retraining enabled

     3            0    Not used

     4             0   DCE speed displayed; extended result codes
                       disabled
                  1
                       DCE speed displayed; extended result codes enabled

     5             0   DTE speed displayed; extended result codes
                       disabled
                  1
                       DTE speed displayed; extended result codes enabled

    6-7           0    Not used

                          BIT-MAPPED REGISTER S21

  Format                AT [cmds] S21=n [cmds]

  Range:                0-253

  Unit:                 Bit-mapped

  Description:          Selects operating mode, line type, low DTR
                        action, and the long space disconnect function.

   Bit        Value                         Function

    0               0   Originate-only mode disabled

                   1    Originate-only mode enabled

    1               0   Switched line (PSTN/Dial-up)

                   1    Leased line

    2               0   CTS follows RTS

                   1    CTS forced high

   4, 3            00   DTR signal ignored

                   01   Modem goes to command mode on low DTR

                   10   Modem disconnects on low DTR; Auto-Answer is
                        disabled.
                  11
                        Modem is initialized on low DTR

    5               0   DCD forced high

                   1    DCD normal

    6               0   DSR forced high

                   1    DSR normal

    7               0   Long space disconnect function disabled

                   1    Long space disconnect function enabled



                          BIT-MAPPED REGISTER S22

  Format                 AT [cmds] S22=n [cmds]

  Range:                 0-255

  Unit:                  Bit-mapped

  Description:           Controls speaker volume and controls, limits
                         results codes, and pulse dial make/break ratio.

    Bit       Value                          Function

   1, 0             00   Low level volume

                    01   Low level volume

                    10   Medium level volume

                   11    High level volume

   3, 2             00   Speaker off

                    01   Speaker off on carrier

                    10   Speaker always on

                   11    Speaker on during handshake

   6 - 4           000   Basic result codes only enabled

                   100   Basic and connection speed result codes enabled

                   101   Basic and connection speed result codes and
                         dialtone detection enabled
                   110
                         All result codes except dialtone detection
                  111    enabled

                         All result codes enabled

     7               0   39/61ms at 10pps (North America)

                    1    33/67ms at 10pps (Europe)

                          BIT-MAPPED REGISTER S23

  Format                AT [cmds] S23=n [cmds]

  Range:                0-189

  Unit:                 Bit-mapped

  Description:          Grants/denies remote digital loopback, controls
                        DTE rate and parity, and sets guard tone.

    Bit       Value                         Function

   3 - 0         0000   Sets serial port speed to 0-300bps

                 0001   Not used

                 0010   Sets serial port speed to 1200bps

                 0011   Sets serial port speed to 2400bps

                 0100   Sets serial port speed to 4800bps

                 0101   Not used

                 0110   Sets serial port speed to 9600bps

                 0111   Not used

                 1000   Sets serial port speed to 14.4Kbps

                 1001   Sets serial port speed to 19.2Kbps

                 1010   Sets serial port speed to 28.8Kbps

                 1011   Sets serial port speed to 38.4Kbps

                 1100   Sets serial port speed to 57.6Kbps

                1101    Sets serial port speed to 115.2Kbps

   5, 4            00   Parity even

                   01   Space Parity

                   10   Parity odd

                  11    Mark or No Parity

   7, 6            00   Guard tone disabled

                   01   Guard tone 550Hz enabled

                  10    Guard tone 1800Hz enabled



                          BIT-MAPPED REGISTER S27

  Format               AT [cmds] S27=n [cmds]

  Range:               0-255

  Unit:                Bit-mapped

  Description:         Selects synchronous/asynchronous mode, clock
                       source, and DCE speed

   Bit       Value                          Function

  1, 0            00   Asynchronous mode, serial port speed follows
                       connect speed
                  01
                       Asynchronous off-line command mode and synchronous
                  10   connect mode

                 11    Asynchronous off-line command mode; modem
                       autodials first number in directory, then
                       synchronous connect mode

                       Asynchronous off-line command mode on low DTR,
                       synchronous connect mode on high DTR

  3, 2            00   Local modem generates transmit clock source

                  01   Local DTE generates transmit clock source

                 10    Remote DCE/DTE generates transmit clock source

   7-4          0000   DCE at 300bps

                0001   Not used

                0010   DCE at 1200bps

                0011   DCE at 2400bps

                0100   DCE at 4800bps

                0101   DCE at 7200bps

                0110   DCE at 9600bps

                0111   DCE at 12.0Kbps

                1000   DCE at 14.4Kbps

                1001   DCE at 16.8Kbps

                1010   DCE at 19.2Kbps

                1011   DCE at 21.6Kbps

                1100   DCE at 24.0Kbps

                1101   DCE at 26.4Kbps

               1110    DCE at 28.8Kbps



                          BIT-MAPPED REGISTER S28

  Format                 AT [cmds] S28=n [cmds]

  Range:                 Unidentified

  Unit:                  Bit-mapped

  Description:           Controls power-on auto connect, security
                         callback, automatic rate negotiation, and DCE
                         protocol options

    Bit       Value                          Function

     0               0   Power-on auto connect disabled

                    1    Power-on auto connect enabled

   2, 1             00   Password check and callback disabled

                    01   Password check and callback enabled

                   11    Password check enabled; callback disabled

     3               0   Automatic rate negotiation disabled

                    1    Automatic rate negotiation enabled

    4-7           0000   CCITT mode

                  0001   Bell mode

                  0010   Auto scan mode

                  0011   CCITT V.23 mode

                  0100   300bps

                  0101   1200bps

                  0110   2400bps

                  0111   4800bps

                  1000   9600bps

                  1001   14.4Kbps

                  1010   16.8Kbps

                  1011   19.2Kbps

                  1100   21.6Kbps

                  1101   24.0Kbps

                  1110   26.4Kbps

                 1111    28.8Kbps





