
ZYXEL COMMUNICATIONS CORPORATION

U-336S

Card Type                    Modem (synchronous/asynchronous), fax
Chip Set                     Unidentified
Maximum Modem Rate           33.6Kbps
Maximum Fax Rate             14.4Kbps
Data Modulation Protocol     Bell 103/212A

                             ITU-T V.21, V.22, V.22bis, V.32, V.32bis,
                             V.34
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

  DC power                       CN1       Scroll left              SW1

  25-pin serial port             CN2       Scroll up                SW2

  Line in                        CN3       Scroll right             SW3

  Line out                       CN4       Scroll down              SW4

  Leased line                    CN5       Power switch             SW5







































                             DIAGNOSTIC LED(S)

   LED         Color           Status                Condition

   PWR     Unidentified          On                 Power is on

   PWR     Unidentified         Off                 Power is off

   TXD     Unidentified          On          Modem is transmitting data

   TXD     Unidentified         Off        Modem is not transmitting data

   RXD     Unidentified          On           Modem is receiving data

   RXD     Unidentified         Off         Modem is not receiving data

   CD      Unidentified          On           Carrier signal detected

   CD      Unidentified         Off         Carrier signal not detected

   DTR     Unidentified          On             Computer is ready to
                                                 send/receive data

   DTR     Unidentified         Off           Computer is not ready to
                                                 send/receive data

   DSR     Unidentified          On        Modem is ready to send/receive
                                                        data

   DSR     Unidentified         Off             Modem is not ready to
                                                 send/receive data

   RTS     Unidentified          On          DTE requesting to send data
                                                  for transmission

   RTS     Unidentified         Off          DTE not requesting to send
                                               data for transmission

   CTS     Unidentified          On             Modem clear to send

   CTS     Unidentified         Off           Modem not clear to send

   OH      Unidentified          On              Modem is off-hook

   OH      Unidentified         Off               Modem is on-hook

   AA      Unidentified          On         Modem is in auto-answer mode

   AA      Unidentified         Off          Modem is not in auto-answer
                                                        mode

   AA      Unidentified       Blinking       Modem is ringing; In error
                                            control mode, indicates that
                                              modem is retransmitting

                  SUPPORTED COMMAND SET

                    Basic AT Commands

  AT, +++, A/

  A, B, E, H, M, O, T, V

  &C, &F, &J, &M, &R, &T, &X, &Z

                       S Registers

  S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S16

                         Proprietary AT Command Set

                              BREAK HANDLING

  Type:          Configuration

  Format:        AT [cmds] &Yn [cmds]

  Description:   Break handling

    Command                              Function

      &Y0        Break sent to remote modem immediately

      &Y1        Break sent to remote modem and buffer cleared

      &Y2        Send break with transmitted data

                          CONFIGURATION PROFILES

  Type:          Immediate

  Format:        AT [cmds] &Vn [cmds]

  Description:   Displays active and stored configuration profiles

    Command                              Function

      &V0        View current active settings

      &V1        View user profile 1

      &V2        View user profile 2

      &V3        View user profile 3

      &V4        View user profile 4

      &V5        View factory default settings

                                 DATA RATE

  Type:          Configuration

  Format:        AT [cmds] &Bn [cmds]

  Description:   Controls the DTE rate

    Command                              Function

      &B0        Serial speed follows connect speed

      &B1        Serial speed locked

                           DATA SET READY (DSR)

  Type:          Configuration

  Format:        AT [cmds] &Sn [cmds]

  Description:   Selects DSR options

    Command                              Function

      &S0        DSR forced high

      &S1        DSR according to CCITT (ITU-TSS)

                         DATA TERMINAL READY (DTR)

  Type:                  Configuration

  Format:                AT [cmds] &Dn [cmds]

  Description:           Selects modem response to DTR

            Note: The action each variant of &D causes depends on the
            setting of &Q

        Command                              Function

          &D0            Modem does not respond to DTR

          &D1            Modem goes to command mode after DTR goes is off

          &D2            Modem goes to command mode and disconnects
                         (hangs up) after DTR goes off; Auto-Answer is
                         disabled.

          &D3            Modem is initialized after DTR goes off

                                   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,             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.

          DL             Repeat last ATD command

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

                             DOWNLOAD FIRMWARE

  Type:          Configuration

  Format:        AT [cmds] UPX [cmds]

  Description:   Download firmware to the Flash EPROM using Xmodem
                 protocol

                               ERROR CONTROL

  Type:          Configuration

  Format:        AT [cmds] &Kn [cmds]

  Description:   Enables error control options

    Command                              Function

      &K0        Error control disabled

      &K1        Error control enabled

      &K2        MNP4 and MNP5 error control enabled

      &K3        V.42 and MNP4 error control enabled

      &K4        V.42 and V.42bis error control enabled

                                GUARD TONE

  Type:           Configuration

  Format:         AT [cmds] &Gn [cmds]

  Description:    Commands the modem to transmit a guard tone in
                  V.22/V.22bis

            Note: Used primarily for international data transmission

    Command                              Function

      &G0         Guard tone disabled

      &G2         1800Hz guard tone enabled

                                   HELP

  Type:          Immediate

  Format:        AT [cmds] $ [cmds]

  Description:   Display help screen

    Command                              Function

       $         Basic command summary

       &$        Extended command summary

       *$        Extended command summary

                                 LINE TYPE

  Type:          Configuration

  Format:        AT [cmds] &Ln [cmds]

  Description:   Selects line type

    Command                             Line Type

      &L0        Switched line (PSTN/Dial-up)

      &L1        2W leased-line

      &L2        4W leased-line

                                RE-EXECUTE

  Type:                   Immediate

  Format:                 A> <CR>

  Description:            Re-executes the last command once or the last
                          call up to 9 times.

            Note: Do not precede this command with AT. This version of
            the escape sequence is used in non-Hayes modems.

                            REPORT INFORMATION

  Type:          Immediate

  Format:        AT [cmds] In [cmds]

  Description:   Displays information requested

    Command                              Function

       I0        Reports modem model and speed

       I1        Reports ROM checksum

       I2        Report modem link status

      I12        Report physical layer status

                               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         Modem returns result code but quiet after answering on
                  a RING

                                RING VOLUME

  Type:           Configuration

  Format:         AT [cmds] Nn [cmds]

  Default:        5

  Range:          0-7

  Description:    Ring volume control. NO will disable the audio ring
                  function

                              MODEM LINK MODE

  Type:          Configuration

  Format:        AT [cmds] &Nn [cmds]

  Description:   Modem link mode options

    Command                                Mode

      &N0        Multi-Auto, auto negotiate highest possible link rate

      &N1        V.33 14400/12000

      &N2        V.33 12000

      &N3        V.32 9600T/9600/7200T/4800

      &N4        V.32 9600/7200/4800

      &N5        V.32 4800

      &N12       V.23 1200/75

      &N13       V.23 600/75

      &N14       V.22bis 2400/1200

      &N15       V.22 1200

      &N16       V.21 300

      &N17       V.32bis 14400/12000/9600/7200/4800

      &N18       V.32bis 12000/9600/7200/4800

      &N19       V.32bis 7200/4800

      &N24       BELL 212A 1200

      &N25       BELL 103 300

      &N32       G3 Fax V.17/V.29/V.27ter 14400/12000/9600/7200/4800/2400

      &N34       ZyXEL 19200

      &N35       ZyXEL 16800

      &N36       ZyXEL 14400

      &N37       ZyXEL 12000

      &N38       ZyXEL 9600

      &N39       ZyXEL 7200

      &N42       CELL 14400

      &N43       CELL 12000

      &N44       CELL 9600

      &N45       CELL 7200

      &N46       CELL 4800T

      &N62       V.34 28800

      &N63       V.34 26400

      &N64       V.34 24000

      &N65       V.34 21600

      &N66       V.34 19200

      &N67       V.34 16800

      &N68       V.34 14400

      &N69       V.34 12000

      &N70       V.34 9600

      &N71       V.34 7200

      &N72       V.34 4800

      &N73       V.34 2400

                            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)

                     SELECT CALL PROGRESS RESULT CODES

  Type:                   Immediate

  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 enabled.

           X2             Busy tone detection disabled, dial tone
                          detection enabled; result codes 0 - 6 & 10
                          enabled.

           X3             Busy tone detection enabled, dial tone
                          detection disabled; result codes 0 - 5, 7 & 10
                          enabled.

           X4             Busy and dial tone detection enabled; result
                          codes 0 - 7 & 10 enabled.

           X5             Busy and dial tone detection enabled: result
                          codes 0 - 7 & 10 enabled. Reports DTE speed,
                          all CARRIER & PROTOCOL extended result codes
                          enabled

           X6             Busy and dial tone detection enabled; result
                          codes 0 - 7 & 10 enabled. Reports DCE speed,
                          all extended result codes disabled

           X7             Busy and dial tone detection enabled; result
                          codes 0 - 7 & 10 enabled. Reports DCE speed,
                          all CARRIER & PROTOCOL extended result codes
                          enabled

                                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 setting 0

          Z1           Restore setting 1

          Z2           Restore setting 2

          Z3           Restore setting 3

          Z4           Restore factory settings

                              SPEAKER VOLUME

  Type:          Configuration

  Format:        AT [cmds] Ln [cmds]

  Default:       4

  Range:         0-7

  Description:   Controls speaker volume

                           STORE ACTIVE PROFILE

  Type:            Configuration

  Format:          AT [cmds] &Wn [cmds]

  Description:     Writes the values for the user profile n into the
                   non-volatile RAM

                           TERMINATE CONNECTION

  Type:                  Immediate

  Format:                <any key> <CR>

  Description:           Terminate current connection attempt when enter
                         in handshaking state.

            Note: Do not precede this command with AT. This version of
            the escape sequence is used in non-Hayes modems.

                          Extended AT Command Set

                            AUTO HANDSHAKE MODE

  Type:          Configuration

  Format:        AT [cmds] *Mn [cmds]

  Description:   Leased line auto-handshake mode selection

    Command                              Function

      *M0        Set to Originate mode

      *M1        Set to Answer mode

                                 CALLER ID

  Type:          Configuration

  Format:        AT [cmds] *T [cmds]

  Description:   Recall the last CND (Caller ID) information

                             CHARACTER LENGTH

  Type:             Configuration

  Format:           AT [cmds] *Cn [cmds]

  Description:      Controls the character length, including start, stop
                    and parity bit

     Command                              Function

       *C0          10-bit character length

       *C1          11-bit character length

       *C2          9-bit character length

       *C3          8-bit character length

                                COMMAND SET

  Type:          Configuration

  Format:        AT [cmds] *In [cmds]

  Description:   Command set selection

    Command                              Function

      *I0        AT command set

      *I1        V.25bis command set

      *I2        Dumb mode

                           CONFIGURATION PROFILE

  Type:                  Configuration

  Format:                AT [cmds] *Wab [cmds]

  Description:           Write local configuration profile a to remote
                         user profile b and reset modem from profile b

        Command                              Function

          a=0            Assign local user profile 0 to "a"

          a=1            Assign local user profile 1 to "a"

          a=2            Assign local user profile 2 to "a"

          a=3            Assign local user profile 3 to "a"

          b=0            Assign local user profile 0 to "b"

          b=0            Assign local user profile 1 to "b"

          b=0            Assign local user profile 2 to "b"

          b=0            Assign local user profile 3 to "b"

          a=4            Local active configuration

          a=5            Local factory default configuration

                           DEFAULT DIAL POINTER

  Type:          Configuration

  Format:        AT [cmds] *Dn [cmds]

  Range:         0-49

  Description:   Set default dial pointer at telephone directory location
                 n

                               LINE QUALITY

  Type:          Configuration

  Format:        AT [cmds] *Qn [cmds]

  Description:   Action taken when line quality changes

    Command                              Function

      *Q0        No action to poor signal quality

      *Q1        Retrain action taken in signal quality is poor

      *Q2        Adaptive rate, automatic fall-back or forward

      *Q3        Disconnect if signal quality is poor

                      MODEM ERROR CONTROL NEGOTIATION

  Type:              Configuration

  Format:            AT [cmds] *En [cmds]

  Description:       Modem error control negotiation

      Command                              Function

        *E0          If error control negotiation fails, keep the
                     non-error control connection

        *E1          If error control negotiation fails, disconnect the
                     call (hang-up)

                              PASSWORD TABLE

  Type:          Immediate

  Format:        AT [cmds] *V [cmds]

  Description:   View the Password table

                           REMOTE CONFIGURATION

  Type:          Configuration

  Format:        AT [cmds] *Fn [cmds]

  Description:   Remoter configuration enable

    Command                              Function

      *F0        Deny remote configuration

      *F1        Accept remote configuration

                              REMOTE PROFILE

  Type:          Configuration

  Format:        AT [cmds] *Rab [cmds]

  Description:   Read the remote profile "b" to local user profile "a"

    Options                              Function

      a=0        Assign local user profile 0 to "a"

      a=1        Assign local user profile 1 to "a"

      a=2        Assign local user profile 2 to "a"

      a=3        Assign local user profile 3 to "a"

      b=0        Assign local user profile 0 to "b"

      b=0        Assign local user profile 1 to "b"

      b=0        Assign local user profile 2 to "b"

      b=0        Assign local user profile 3 to "b"

      b=4        Remote active configuration

      b=5        Remote factory default configuration

                             SECURITY FUNCTION

  Type:                  Configuration

  Format:                AT [cmds] *Gn [cmds]

  Description:           Security function selection

        Command                              Function

          *G0            Disable security functions

          *G1            Enable type 1 security, with password check

          *G2            Enable type 1 security, with password check and
                         call back

          *G3            Enable type 2 security, with password check

          *G4            Enable type 2 security, with password check and
                         call back

          *G5            Enable type 2 security, with password check and
                         call back, remote user enters the call back
                         number.

                            SUPERVISOR PASSWORD

  Type:          Configuration

  Format:        AT [cmds] *HS [cmds]

  Description:   Modify supervisory password (default: "ZyXEL")

                         TRANSMISSION POWER LEVEL

  Type:          Configuration

  Format:        AT [cmds] *Pn [cmds]

  Default:       9

  Range:         0-15

  Description:   Set leased line transmission power level

                               USER PASSWORD

  Type:          Configuration

  Format:        AT [cmds] *Hn [cmds]

  Range:         0-49

  Description:   Modify user password table at location n

                            S(status) -REGISTERS

                          BIT-MAPPED REGISTER S13

  Format:        AT [cmds] S13=n [cmds]

  Default:       170

  Unit:          Bit-mapped

  Description:   Capture modem information

                          BIT-MAPPED REGISTER S14

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

  Default:         170

  Unit:            Bit-mapped

  Description:     Controls auto-handshake

   Bit    Value                           Function

    0          0   Modem auto-handshake on Originate mode

              1    Modem auto-handshake on Answer mode

    1          0   Grant remote Digital Loop-back test request

              1    Deny remote Digital Loop-back test request

   3,2         0   Dial-up line

               1   2-wire leased line

              8    4-wire leased line

   5,4         0   Internal clock

              16   External clock

             32    Remote clock

   7,6         0   Asynchronous data with buffering

              64   Asynchronous command, synchronous data

             128   Direct asynchronous, no data buffering

            192    Synchronous

                          BIT_MAPPED REGISTER S15

  Type:            Register

  Format:          AT [cmds] S15=n [cmds]

  Description:     Controls parity

   Bit    Value                           Function

   0,1         0   Even parity

               1   Odd parity

              2    No parity

    2          0   1 stop bit

              4    2 stop bits

   4,3         0   10 bit character length

               8   11 bit character length

              16   9 bit character length

             24    8 bit character length

   7-5         0   Profile 0 as active settings after power on

              32   Profile 1 as active settings after power on

              64   Profile 2 as active settings after power on

              96   Profile 3 as active settings after power on

            128    Factory default as active settings after power on

                          BIT-MAPPED REGISTER S17

  Type:            Register

  Format:          AT [cmds] S17=n [cmds]

  Unit:            Bit-mapped

  Description:     Controls dialing

   Bit    Value                           Function

    0         0    Disable secondary channel

   4-1     0-30    Set leased line transmit power level from 0 to 15 dBn.

    5          0   Normal dial

             32    Reverse dial, go on-line in answer mode

   7,6         0   AT command set

              64   V.25bis command set

            128    Dumb mode

                                 BAUD RATE

  Type:                  Register

  Format                 AT [cmds] S18=n [cmds]

  Description:           Force modem to fix baud rate when answering

    Bit        Value                         Function

     0              0    Disable fixed baud rate

    1-46         1-2E    Enable baud rate to be fixed when answering.
                         Baud rate value settings (n) the same as S20

                           MODEM CONNECTION MODE

  Type:           Register

  Format          AT [cmds] S19=n [cmds]

  Description:    MODEM CONNECTION MODE

            Note: S18=0 disables the timer and allows an indefinite
            duration.

     Value                               Function

      0-73        Setting value as AT&Nn command

                          BIT-MAPPED REGISTER S20

  Format         AT [cmds] S20=n [cmds]

  Default:       Unidentified

  Unit:          Bit-mapped

  Description:   DTE speed (bps). Auto detect from AT Command

     Value                               Function

     S20=0       230400bps

     S20=1       115200bps

     S20=2       76800bps

     S20=3       57600bps

     S20=4       38400bps

     S20=5       19200bps

     S20=6       16800bps

     S20=7       14400bps

     S20=8       12000bps

     S20=9       9600bps

     S20=10      7200bps

     S20=11      4800bps

     S20=12      2400bps

     S20=13      1200bps

     S20=14      460800bps

     S20=15      300bps

     S20=16      307200bps

     S20=17      153600bps

     S20=18      102400bps

     S20=20      61440bps

     S20=21      51200bps

     S20=22      62400bps

     S20=24      124800bps

     S20=25      62400bps

     S20=26      41600bps

     S20=27      31200bps

     S20=28      24960bps

     S20=29      20800bps

     S20=46      92160bps

                          BIT-MAPPED REGISTER S21

  Format                 AT [cmds] S21=n [cmds]

  Default:               Unidentified

  Unit:                  Bit-mapped

  Description:           Auto speed detection

    Bit       Value                          Function

     0               0   Maintain non-error control connection when modem
                         error control handshake fails
                    1
                         Drop connection when modem error control
                         handshake fails

    1-2              0   Speaker always off

                     2   Speaker on until carrier is detected

                     4   Speaker always on

                    6    Speaker on after last digit is dialed out until
                         carrier is detected

     3               0   DSR always on

                    8    According to CCITT

     4               0   CD always on

                   16    CD tracks presence of data carrier

     5              0    CTS follows RTS in synchronous mode.

                         Response delay set in S26.

                   32    Ignore RTS (CTS always on) in synchronous mode.

    6-7              0   Assume DTR always on

                    64        108.1 DTR off-on transition causes dial of
                              the default number
                   128
                              108.2 Data Terminal Ready. DTR off causes
                  192         the modem to hang up and return to command
                              mode

                         108.2 DTR off causes the modem to hang up and
                         reset the modem to profile #0 after DTR dropped

                          BIT-MAPPED REGISTER S23

  Format           AT [cmds] S23=n [cmds]

  Default:         Unidentified

  Unit:            Bit-mapped

  Description:     Bit mapped register

   Bit    Value                           Function

    0          0   Command echo disabled

              1    Command echo enabled

    1          0   Tone dial

              2    Tone dial

    2          0   Pulse dial make/break ratio = 39% / 61%

              4    Pulse dial make/break ratio = 33% / 67%

   3-5         0   ATX0

               8   ATX1

              16   ATX2

              24   ATX3

              32   ATX4

              40   ATX5

              48   ATX5, error control result code enabled

             56    ATX6, error control result code enabled

    6          0   Display result code in verbose format (see S35.7)

             64    Display result code in verbose format

    7          0   Modem returns result state

            128    Modem does not return result code

                          BIT MAPPED REGISTER S24

  Type:              Register

  Format             AT [cmds] S24=n [cmds]

  Default:           Unidentified

  Unit:              Unidentified

  Description:       Bit mapped register

   Bit      Value                          Function

   2-0       0-7     Ring volume control

   6-4     16-112    Speaker volume control

                              DTR TIME DELAY

  Type:                  Register

  Format                 AT [cmds] S25=n [cmds]

  Default:               0

  Range:                 Unidentified

  Unit:                  .1 second

  Description:           Specify the time delay that DTR signal needs to
                         be off before it will be recognizedIf S25=0, the
                         delay time is set to 4ms.

                               RTS/CTS DELAY

  Type:                  Register

  Format                 AT [cmds] S26=n [cmds]

  Default:               0

  Range:                 0 - 255

  Unit:                  .1 second

  Description:           Set the delay, in 10ms units between the RTS and
                         modems CTS response in synchronous mode.

                          BIT-MAPPED REGISTER S27

  Format             AT [cmds] S27=n [cmds]

  Default:           Unidentified

  Unit:              Bit-mapped

  Description:       Bit mapped register

   Bit     Value                          Function

   0-2          0  No error control

                1  MNP4 and MNP3 error control

                2  MNP4 and MNP5 error control

                3  V.42 and MNP4 error control

               4   V.42 and V.42bis error control

   3-5           0   Flow control disabled

                24   Hardware (RTS/CTS) flow control

                32   Software (XON/XOFF) flow control

               40    Reserved

   6-7           0   No response to poor signal quality

                64   Retrain action taken if signal quality *Q1 is poor

               128   Adaptive rate (auto fall back/forward) when signal
                     quality changes
              192
                     Disconnect when signal quality is poor

                          BIT-MAPPED REGISTER S28

  Format           AT [cmds] S28=n [cmds]

  Default:         unidentified

  Unit:            Bit-mapped

  Description:     Bit mapped register

   Bit    Value                           Function

    0          0   Reserved

              1    Multiple phone/modem line

    1          0   Panel key is normal

              1    Panel key is locked

   2-3         0   Destructive, expedited break

               1   Non-destructive expedited break

             10    Non-destructive, un-expedited break

   4-5         0   No guard tone

              16   Reserved

             32    1800Hz guard tone

    6          0   DTE/DCE rate follows link rate

              1    DTE/DCE rate is fixed at the DTE setting

    7          0   Select V.22 for 1200bps communications

            128    Select Bell 212A for 1200bps communication

                           PHONE NUMBER POINTER

  Type:              Register

  Format             AT [cmds] S29=n [cmds]

  Default:           0

  Range:             0-49

  Description:       Set default dial phone number pointer, use AT&Zn=s
                     to store phone numbers

                                 XON VALUE

  Type:          Register

  Format         AT [cmds] S31=n [cmds]

  Default:       0

  Range:         0-255

  Description:   Holds the ASCII decimal value of the XON

                                XOFF VALUE

  Type:          Register

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

  Default:       0

  Range:         0-255

  Description:   Holds the ASCII decimal value of the XOFF

                          BIT MAPPED REGISTER S35

  Type:                  Register

  Format:                AT [cmds] S35=n [cmds]

  Description:           Bit mapped register

    Bit       Value                          Function

     0               1   Use CELL 4800T trellis coded 4800 for V.32 4800
                         (available with cellular mode only)

     1               2   Disable aborting from terminal during modem
                         handshaking

     2               4   V.26 alternative A.

     3               8   Add 12dBm attenuation to the leased line

     4              16   When Data/Voice with is pressed, modem will dial
                         the default number

     5              32   Enable Selective Reject in V.42

     6              64   Enable password protection to profile saving.
                         When AT&W0 is issued, and profile 0 in the
                         NVRAM has this bit set, the supervisory password
                         will be requested. This bit in profile 0 also
                         protects the supervisory password from a
                         hardware reset.

     7             128   Enable extended numerical result codes from
                         50-71 when an error corrected connection is
                         made. Use with ATV0.

                            BIT MAPPED REGISTER

  Type:                  Register

  Format                 AT [cmds] S36=n [cmds]

  Description:           Bit mapped register

   Bit        Value                          Function

    0                0   Deny remote request for configuration

                    1    Grant remote request for configuration

    1                0   Write from local profile to remote profile

                    2    Read from local profile to remote profile

   7-5               0   Disable security function

                    32   Enable type 1 security with password check

                    64   Enable type 1 security with password check and
                         call-back (ZyXEL to ZyXEL only)
                    96
                         Enable type 2 security with password check
                   128
                         Enable type 2 security with password check and
                  160    call-back

                         Enable type 2 security with password check and
                         call-back, remote site enters the call-back
                         number

                          BIT MAPPED REGISTER S37

  Type:             Register

  Format            AT [cmds] S37=n [cmds]

  Description:      Bit mapped register for remote configuration using
                    panel menu control

   Bit     Value                          Function

   3-0       0-5    Remote profile number

   7-4      0-80    Local profile number

                          BIT MAPPED REGISTER S38

  Type:                   Register

  Format                  AT [cmds] S38=n [cmds]

  Description:            Bit mapped register

    Bit        Value                         Function

     0               1    Repeatedly dialing default number

     3               8    DCD ON/OFF sequence follows UNIX standard, DCD
                          high before connect message is sent, DCD off
                          after last DCE response is sent.

     4              16    Auto-mode fax receiving disabled

     5              32    Disable MNP5

                          BIT MAPPED RIGESTER S39

  Type:                Register

  Format               AT [cmds] S39=n [cmds]

  Description:         Bit mapped register

   Bit       Value                          Function

    2              4   Answer in originating mode

    3              8   Class 2 Fax Bitfax compatibility: +FCON at 2400
                       next phase at 19200

    4             16   Class 2 Fax mode DTE shifting: +FCON at current
                       DTE, shift to 19,200 when entering into the next
                       phase

    5             32   Disable scrambler/descrambler in V.26bis mode.

                          BIT-MAPPED REGISTER S40

  Format           AT [cmds] S40=n [cmds]

  Default:         Unidentified

  Unit:            Bit-mapped

  Description:     Bit mapped register

   Bit    Value                           Function

    1         2    No result code displayed in answer mode

    2         4    Enables caller ID detection

    3         8    Enables type 1 ring detection

    4        16    Enables type 2 ring detection

    5        32    Enables type 3 ring detection

    6        64    Enables type 4 ring detection

                          BIT-MAPPED REGISTER S41

  Format                AT [cmds] S41=n [cmds]

  Default:              Unidentified

  Unit:                 Bit-mapped

  Description:          Bit mapped register

   Bit        Value                         Function

    0              1    Special MNP compatibility.

    2              4    Disable retrain abort, up to 5 min. for special
                        satellite line condition

    3              8    Enable CCITT signals 140 and 141 on EIA232D
                        interface

    4             16    In X2-X7 setting, modem waits for S6 seconds
                        before dialing and ignors dial tone detection

    5             32    DSR follows DCD and pulses

    6             64    Force S0>=2

    7            128    Ignore calling tone, not to be used as fax
                        detection

                          BIT MAPPED REGISTER S42

  Type:                     Register

  Format:               AT [cmds] S42=n [cmds]

  Description:          Bit mapped register

      Bit         Value                       Function

       1              2    Enable throughput averaging

       2              4    CND message will be forced on even if AT02 is
                           set

       3              8    Disable escape sequence code in answer mode

       4             16    Disable V.17, 14,400 fax in calling made, no
                           effect to answering mode &N32

       5             32    Disable Data/Voice button

       6             64    Disable RINGING result code

       7            128    DCD forced on but pulse off for 0.5 seconds at
                           carrier loss

                          BIT MAPPED REGISTER S43

  Type:                          Register

  Format:                   AT [cmds] S43=n [cmds]

  Description:              Bit mapped register

        Bit           Value                     Function

         0                 1    Disable ZyXEL 16800 in Multi-Auto mode

         1                 2    Disable ZyXEL 19200 in Multi-Auto mode

         2                 4    Disable cellular mode automatic transmit
                                power adjustment

         3                 0    Enable cellular mode in Multi-Auto mode

                           8    Disable cellular mode in Multi-Auto mode

         6                64    Enable 1.5sec., p[ause between off-hook
                                and modem answering

         7               128    Modem hang-up if the line condition does
                                not permit modem to run highest speed set
                                by &Nn command

                          BIT MAPPED REGISTER S44

  Type:                          Register

  Format:                   AT [cmds] S44=n [cmds]

  Description:              Bit mapped register

        Bit           Value                     Function

         3                 8    ATDSn initiates auto-dial of the stored
                                numbers consecutively until connection is
                                made

         4                16    DSR follows DTR

         5                32    Enable V.13 half-duplex simulation in
                                synchronous mode

         6                64    When selected with &Bo. DTE speed fixed
                                at 38400 when the link speed is above
                                9600. DTE speed fixed at 9600 if link
                                speed is 7200, DTE speed follows link
                                speed. When selected with &B1, DTE speed
                                fixed at current rate when an ARQ
                                connection is made, when a non-ARQ
                                connection is made, DTE speed follows the
                                link speed. (see also S18)

         7               128    Enable UK type short-to-short ring-back
                                detection.

                                CND SILENCE

  Type:           Register

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

  Range:         0-255

  Units:         20ms

  Description:   Delay during which the CND silence detection is disabled

                                CND SILENCE

  Type:                   Register

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

  Range:                  0-255

  Units:                  20ms

  Description:            CND silence detection interval. To process the
                          CND, silence must be detected for the specified
                          interval







                          BIT MAPPED REGISTER S48

  Type:                     Register

  Format:               AT [cmds] S48=n [cmds]

  Description:          Bit mapped register

      Bit         Value                       Function

       0              1    Cause CND information to be reported in raw
                           format

       1              2    Enable data only mode. Auto-detect
                           V.34/ZyX/V.32bis/V.22bis/V.23/V.21 Bell 103
                           when answering. If the connection try fails,
                           the modem will continuously recycle the
                           handshaking procedure until the S7 register
                           times out

       2              4    Enable data calling tone (CNG) send

       3              8    Reverse the V.23 channel speed. Originate mode
                           modem speed (Send/Receive) 1200/75; Answer
                           mode modem speed (Send/Receive) 75/1200

       4             16    (work with &D1 command) DTR ON will have the
                           modem dial the default number and DTR OFF will
                           have the modem hang-up and reset to profile 0.
                           When the modem is idle, it will not dial any
                           number when DTR changes from on to off

                          BIT MAPPED REGISTER S49

  Type:                  Register

  Format:            AT [cmds] S49=n [cmds]

  Description:       Bit mapped register

     Bit        Value                       Function

     3-0         0-15    Set cellular mode transmit power level -9 to -24
                         dBn.

      7             0    For cellular mode only. Modem is installed in
                         office

                  128    For cellular mode only. Modem is connected to a
                         mobile phone

                          BIT MAPPED REGISTER S50

  Type:                   Register

  Format:                 AT [cmds] S50=n [cmds]

  Range:                  0-255

  Units:                  10 second

  Description:            Inactivity timer. The modem counts when there
                          is no data flow in or out of the RS-232 serial
                          port. A connection is disengaged when the
                          counter reaches the preset value. Set value to
                          0 to disable this function

                          BIT MAPPED REGISTER S51

  Type:                  Register

  Format:            AT [cmds] S51=n [cmds]

  Description:       Bit mapped register

     Bit        Value                       Function

     1-0             0  Disables EDR

                     1  Reports RING twice

                     2  Reports RING four times

                    3   Reports RING six times

     3-2             0  Disables DTMF tone

                     4  Reports RING for a DTMF tone

                     8  Reports RING DTMF for a DTMF tone

                    12  Reserved

                    1   Reports RING twice

     5-4             0  Disables fax-CNG tone detection

                    16  Reports RING for fax CNG tone

                    32  Reports RING 1 for a CNG tone

                   48   Reports RING 2 for a CNG tone

     7-6             0  Disables data CNG tone detection

                    64  Reports RING for data CNG tone

                   128  Reports RING 1 for data CNG tone

                  192   Reports RING 3 for data CNG tone

                          BIT MAPPED REGISTER S52

  Type:             Register

  Format            AT [cmds] S52=n [cmds]

  Description:      Bit mapped register

   Bit     Value                          Function

   4-3       0-24   Receive level adjustment

                0   -43dBm

                8   -33dBn

               16   -26dBn

              24    -26dBm

    7          0    Select Mark as the first signal of the V.23
                    handshaking sequence

             128    Select Space as the first signal of the V.23
                    handshaking sequence

                          HOOK FLASH DETECT TIME

  Type:          Register

  Format         AT [cmds] S56 [cmds]

  Range:         0-255

  Units:         0.1 seconds

  Description:   Bit mapped register

                          HOOK FLASH DETECT TIME

  Type:              Register

  Format             AT [cmds] S57 [cmds]

  Description:       Bit mapped register

   Bit      Value                          Function

    4          16    Enables the reporting of Class 1 capability in the
                     response to +FCLASS=?

    6           0    Disabled busy detection when dialing is proceeding

               64    Enables busy detection in dialing period

                          BIT MAPPED REGISTER S62

  Type:                Register

  Format:              AT [cmds] S62=n [cmds]

  Unit:                1 minute

  Description:         Bit mapped register

    Bit      Value                          Function

     0             0   Force the modem to use the new values of S18 to
                       fix the baud rate when
                  1
                       answering.

                       Force the modem to use the old values of S18 to
                       fix the baud rate when answering.

             RESULT CODES

  ATV0               ATV1

   0     OK

   1     CONNECT

   2     RING

   3     NO CARRIER

   4     ERROR

   5     CONNECT 1200

   6     NO DIAL TONE

   7     BUSY

   8     NO ANSWER

   9     RINGING

   10    CONNECT 2400

   11    CONNECT 4800

   12    CONNECT 9600

   14    CONNECT 19200

   15    CONNECT 7200

   16    CONNECT 12000

   17    CONNECT 14400

   18    CONNECT 16800

   19    CONNECT 38400

   20    CONNECT 47600

   21    CONNECT 76800

   22    CONNECT 115200

   23    CONNECT 230400

   24    CONNECT 460800

   25    CONNECT 921600



   BIT MAPPED REGISTER S62 (CONT)

  ATV0               ATV1

   26    CONNECT 307200

   27    CONNECT 153600

   28    CONNECT 102400

   29    CONNECT 21440

   30    CONNECT 51200

   31    CONNECT 624000

   32    CONNECT 124800

   33    CONNECT 62400

   34    CONNECT 41600

   35    CONNECT 31200

   36    CONNECT 24960

   37    CONNECT 20800

   38    CONNECT 33600

   39    CONNECT 28800

   40    CONNECT 26400

   41    CONNECT 24000

   42    CONNECT 21600

