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       # ZYXEL COMMUNICATIONS CORPORATION
       
          OMNI TA128, OMNI TA128U
       
          Card Type                 ISDN TA                              
          Chipset                   Siemens                              
          ISDN Protocol             V.110, V.120, X.75, PPP              
          Switch Type               5ESS, DMS100, 1TR6, EWSD, DSS1, NI-1 
          Transfer Rate             64Kbps x 2                           
          Data Bus                  Serial                               
          Error                     V.42bis                              
          Correction/Compression    
       
   IMG IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |       Function       | Label  |      Function      | Label |
          |----------------------+--------+--------------------+-------|
          | Analog line 1 in     |  CN1   | Serial port 1      |  CN5  |
          |----------------------+--------+--------------------+-------|
          | Analog line 2 in     |  CN2   | DC power in        |  CN6  |
          |----------------------+--------+--------------------+-------|
          | ISDN line out        |  CN3   | Power switch       |  SW1  |
          |----------------------+--------+--------------------+-------|
          | Serial port 2        |  CN4   | Auto-dial switch   |  SW2  |
          |------------------------------------------------------------|
          |      Note: Pressing the auto-dial switch while connected   |
          |      will disconnect the call.                             |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                DIAGNOSTIC LED(S) (POWER-UP)                |
          |------------------------------------------------------------|
          |  LED  |     Color     |  Status   |       Condition        |
          |-------+---------------+-----------+------------------------|
          |  LNK  | Unidentified  |    On     |  TA is testing memory  |
          |-------+---------------+-----------+------------------------|
          |  LNK  | Unidentified  | Blinking  |   Memory test failed   |
          |-------+---------------+-----------+------------------------|
          |  B1   | Unidentified  |    On     |   TA is testing ISDN   |
          |       |               |           |  controller interface  |
          |-------+---------------+-----------+------------------------|
          |  B1   | Unidentified  | Blinking  |    ISDN controller     |
          |       |               |           | interface test failed  |
          |-------+---------------+-----------+------------------------|
          |  B2   | Unidentified  |    On     |   TA is testing ISDN   |
          |       |               |           |  controller functions  |
          |-------+---------------+-----------+------------------------|
          |  B2   | Unidentified  | Blinking  |    ISDN controller     |
          |       |               |           |  function test failed  |
          |-------+---------------+-----------+------------------------|
          |  AA   | Unidentified  |    On     |   TA is testing HDLC   |
          |       |               |           |       functions        |
          |-------+---------------+-----------+------------------------|
          |  AA   | Unidentified  | Blinking  |   HDLC function test   |
          |       |               |           |         failed         |
          |-------+---------------+-----------+------------------------|
          |  LNK  | Unidentified  |    On     |    All tests passed    |
          |------------------------------------------------------------|
          |      Note: On power-up, the LEDs should indicate the tests |
          |      in progress in the order indicated above. A blinking  |
          |      LED or any pattern other than the ones shown above    |
          |      indicate an error. The final indication should remain |
          |      lit for one-half of one second.                       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |            DIAGNOSTIC LED(S) (NORMAL OPERATION)            |
          |------------------------------------------------------------|
          | LED  |    Color     |  Status  |         Condition         |
          |------+--------------+----------+---------------------------|
          | PWR  | Unidentified |    On    |        Power is on        |
          |------+--------------+----------+---------------------------|
          | PWR  | Unidentified |   Off    |       Power is off        |
          |------+--------------+----------+---------------------------|
          | LNK  | Unidentified |    On    |    Physical ISDN layer    |
          |      |              |          |          active           |
          |------+--------------+----------+---------------------------|
          | LNK  | Unidentified |   Off    |    Physical ISDN layer    |
          |      |              |          |         inactive          |
          |------+--------------+----------+---------------------------|
          | LNK  | Unidentified | Blinking |  D-channel link layer in  |
          |      |              |          |     multi-frame mode      |
          |------+--------------+----------+---------------------------|
          |  B1  | Unidentified |    On    |   B1 channel connected    |
          |------+--------------+----------+---------------------------|
          |  B1  | Unidentified |   Off    | B1 channel not connected  |
          |------+--------------+----------+---------------------------|
          |  B1  | Unidentified |  Random  |       B1 channel is       |
          |      |              |  blink   |  retransmitting packets   |
          |------+--------------+----------+---------------------------|
          |  B1  | Unidentified | 1 blink  |  B1 channel is protected  |
          |      |              |          |    by single DES mode     |
          |      |              |          |        encryption         |
          |------+--------------+----------+---------------------------|
          |  B1  | Unidentified | 3 blinks |  B1 channel is protected  |
          |      |              |          |    by triple DES mode     |
          |      |              |          |        encryption         |
          |------+--------------+----------+---------------------------|
          |  B2  | Unidentified |    On    |   B2 channel connected    |
          |------+--------------+----------+---------------------------|
          |  B2  | Unidentified |   Off    | B2 channel not connected  |
          |------+--------------+----------+---------------------------|
          |  B2  | Unidentified |  Random  |       B2 channel is       |
          |      |              |  blink   |  retransmitting packets   |
          |------+--------------+----------+---------------------------|
          |  B2  | Unidentified | 1 blink  |  B2 channel is protected  |
          |      |              |          |    by single DES mode     |
          |      |              |          |        encryption         |
          |------+--------------+----------+---------------------------|
          |  B2  | Unidentified | 3 blinks |  B2 channel is protected  |
          |      |              |          |    by triple DES mode     |
          |      |              |          |        encryption         |
          |------+--------------+----------+---------------------------|
          |  AA  | Unidentified |    On    |    Auto-answer enabled    |
          |------+--------------+----------+---------------------------|
          |  AA  | Unidentified |   Off    |   Auto-answer disabled    |
          |------+--------------+----------+---------------------------|
          |  AA  | Unidentified | Blinking |     Phone is ringing      |
          |------+--------------+----------+---------------------------|
          | DTR1 | Unidentified |    On    | DTR signal of serial port |
          |      |              |          |         1 is high         |
          |------+--------------+----------+---------------------------|
          | DTR1 | Unidentified |   Off    | DTR signal of serial port |
          |      |              |          |         1 is low          |
          |------+--------------+----------+---------------------------|
          | TX1  | Unidentified | Blinking |     Serial port 1 is      |
          |      |              |          |  transmitting data to TA  |
          |------+--------------+----------+---------------------------|
          | TX1  | Unidentified |   Off    |   Serial port 1 is not    |
          |      |              |          |  transmitting data to TA  |
          |------+--------------+----------+---------------------------|
          | RX1  | Unidentified | Blinking |     Serial port 1 is      |
          |      |              |          |  receiving data from TA   |
          |------+--------------+----------+---------------------------|
          | RX1  | Unidentified |   Off    |   Serial port 1 is not    |
          |      |              |          |  receiving data from TA   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |        DIAGNOSTIC LED(S) (NORMAL OPERATION, CON’T)         |
          |------------------------------------------------------------|
          | LED  |    Color     |  Status  |         Condition         |
          |------+--------------+----------+---------------------------|
          | DTR2 | Unidentified |    On    | DTR signal of serial port |
          |      |              |          |         2 is high         |
          |------+--------------+----------+---------------------------|
          | DTR2 | Unidentified |   Off    | DTR signal of serial port |
          |      |              |          |         2 is low          |
          |------+--------------+----------+---------------------------|
          | TX2  | Unidentified | Blinking |     Serial port 2 is      |
          |      |              |          |  transmitting data to TA  |
          |------+--------------+----------+---------------------------|
          | TX2  | Unidentified |   Off    |   Serial port 2 is not    |
          |      |              |          |  transmitting data to TA  |
          |------+--------------+----------+---------------------------|
          | RX2  | Unidentified | Blinking |     Serial port 2 is      |
          |      |              |          |  receiving data from TA   |
          |------+--------------+----------+---------------------------|
          | RX2  | Unidentified |   Off    |   Serial port 2 is not    |
          |      |              |          |  receiving data from TA   |
          |------+--------------+----------+---------------------------|
          |  1   | Unidentified |    On    | Analog line 1 is off-hook |
          |------+--------------+----------+---------------------------|
          |  1   | Unidentified |   Off    | Analog line 1 is on-hook  |
          |------+--------------+----------+---------------------------|
          |  2   | Unidentified |    On    | Analog line 2 is off-hook |
          |------+--------------+----------+---------------------------|
          |  2   | Unidentified |   Off    | Analog line 2 is on-hook  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                SUPPORTED STANDARD COMMANDS                 |
          |------------------------------------------------------------|
          |                     Basic AT Commands                      |
          |------------------------------------------------------------|
          | +++, ‘comma’, A/                                           |
          |------------------------------------------------------------|
          | A, E, L, M, O, Q, V, X, Z                                  |
          |------------------------------------------------------------|
          | &C, &D, &F, &H, &S, &W, &Z                                 |
          |------------------------------------------------------------|
          |                        S-Registers                         |
          |------------------------------------------------------------|
          | S0, S1, S2, S3, S4, S5, S7, S8, S16, S21, S23, S25, S31,   |
          | S32                                                        |
          |------------------------------------------------------------|
          |      Note: See MHI documentation for complete information. |
          +------------------------------------------------------------+
       
                            Proprietary AT Command Set
       
          +------------------------------------------------------------+
          |                       AUTO-CALLBACK                        |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] *GCn [cmds]                       |
          |--------------+---------------------------------------------|
          | Description: | Selects the auto-callback feature. The      |
          |              | modem will compare the caller ID            |
          |              | information to the five auto-callback       |
          |              | numbers stored with the *HC command. If one |
          |              | of them matches, the modem will reject the  |
          |              | call before it connects and call that       |
          |              | number back.                                |
          |------------------------------------------------------------|
          |        Command         |             Function              |
          |------------------------+-----------------------------------|
          |         í *GC0         | Auto-callback disabled.           |
          |------------------------+-----------------------------------|
          |          *GC1          | Auto-callback enabled.            |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                AUTO-CALLBACK NUMBER DISPLAY                |
          |------------------------------------------------------------|
          | Type:        | Immediate                                   |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] *VC [cmds]                        |
          |--------------+---------------------------------------------|
          | Description: | Displays all auto-callback numbers.         |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  AUTO-CALLBACK NUMBER SET                  |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] *HCn=<#>                          |
          |--------------+---------------------------------------------|
          | Description: | Sets auto-callback number n to the number   |
          |              | specified. n must be between 0 and 4.       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  BIT-MAPPED REGISTER S24                   |
          |------------------------------------------------------------|
          | Format       | AT [cmds] S24=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Default:     | Unidentified                                |
          |--------------+---------------------------------------------|
          | Range:       | 0-63                                        |
          |--------------+---------------------------------------------|
          | Description: | Controls ring volume, speaker volume, and   |
          |              | speaker control for analog line DTMF tone   |
          |              | generation.                                 |
          |--------------+---------------------------------------------|
          | Bit  | Value |                  Function                   |
          |------+-------+---------------------------------------------|
          | 1,0  |    00 | Ring volume off.                            |
          |      |       |                                             |
          |      |    01 | Ring volume low.                            |
          |      |       |                                             |
          |      |    10 | Ring volume medium.                         |
          |      |       |                                             |
          |      |    11 | Ring volume high.                           |
          |------+-------+---------------------------------------------|
          |  2   |     0 | DTMF tones from analog line 1 follow        |
          |      |       | setting of M command.                       |
          |      |     1 |                                             |
          |      |       | DTMF tones from analog line 1 audible       |
          |      |       | regardless of setting of M command.         |
          |------+-------+---------------------------------------------|
          |  3   |     0 | DTMF tones from analog line 2 follow        |
          |      |       | setting of M command.                       |
          |      |     1 |                                             |
          |      |       | DTMF tones from analog line 2 audible       |
          |      |       | regardless of setting of M command.         |
          |------+-------+---------------------------------------------|
          | 5,4  |    00 | Speaker volume off.                         |
          |      |       |                                             |
          |      |    01 | Speaker volume low.                         |
          |      |       |                                             |
          |      |    10 | Speaker volume medium.                      |
          |      |       |                                             |
          |      |    11 | Speaker volume high.                        |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  BIT-MAPPED REGISTER S118                  |
          |------------------------------------------------------------|
          | Format:      | AT [cmds] S118=n [cmds]                     |
          |--------------+---------------------------------------------|
          | Default:     | Unidentified                                |
          |--------------+---------------------------------------------|
          | Range:       | 0 - 245                                     |
          |--------------+---------------------------------------------|
          | Description: | Controls dial-in mode, default line speed,  |
          |              | low-speed service type, and analog call     |
          |              | acceptance.                                 |
          |--------------+---------------------------------------------|
          | Bit  | Value |                  Function                   |
          |------+-------+---------------------------------------------|
          |  0   |     0 | Dial-in calls may be answered.              |
          |      |       |                                             |
          |      |     1 | Dial-in calls may not be answered.          |
          |------+-------+---------------------------------------------|
          |  1   |     0 | Not used.                                   |
          |------+-------+---------------------------------------------|
          |  2   |     0 | Use 64Kbps speed for ISDN.                  |
          |      |       |                                             |
          |      |     1 | Use 56Kbps speed for ISDN.                  |
          |------+-------+---------------------------------------------|
          |  3   |     0 | Not used.                                   |
          |------+-------+---------------------------------------------|
          |  4   |   í 0 | Use 3.1KHz service for analog line 2.       |
          |      |       |                                             |
          |      |     1 | Use voice service for analog line 2.        |
          |------+-------+---------------------------------------------|
          |  5   |   í 0 | Use 3.1KHz service for analog line 1.       |
          |      |       |                                             |
          |      |     1 | Use voice service for analog line 1.        |
          |------+-------+---------------------------------------------|
          |  6   |   í 0 | All analog calls will be answered.          |
          |      |       |                                             |
          |      |     1 | Only analog calls with matching MSN will be |
          |      |       | answered.                                   |
          |------+-------+---------------------------------------------|
          |  7   |   í 0 | Incoming analog calls will be answered.     |
          |      |       |                                             |
          |      |     1 | Incoming analog calls will be ignored.      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   CONFIGURATION PROFILES                   |
          |------------------------------------------------------------|
          | Type:        | Immediate                                   |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] &Vn [cmds]                        |
          |--------------+---------------------------------------------|
          | Description: | Displays active and stored configuration    |
          |              | profiles.                                   |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |     &V0      | Displays current settings.                  |
          |--------------+---------------------------------------------|
          |     &V1      | Displays profile 0.                         |
          |--------------+---------------------------------------------|
          |     &V2      | Displays profile 1.                         |
          |--------------+---------------------------------------------|
          |     &V3      | Displays profile 2.                         |
          |--------------+---------------------------------------------|
          |     &V4      | Displays profile 3.                         |
          |--------------+---------------------------------------------|
          |     &V5      | Displays factory defaults.                  |
          |--------------+---------------------------------------------|
          |     &V6      | Displays analog line 1 settings.            |
          |--------------+---------------------------------------------|
          |     &V7      | Displays analog line 2 settings.            |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                        HOOK CONTROL                        |
          |------------------------------------------------------------|
          | Type:        | Immediate                                   |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] Hn [cmds]                         |
          |--------------+---------------------------------------------|
          | Description: | Hangs up ISDN and analog lines.             |
          |------------------------------------------------------------|
          |    Command    |                  Function                  |
          |---------------+--------------------------------------------|
          |      H0       | Hangs up line currently in use.            |
          |---------------+--------------------------------------------|
          |      H3       | Hangs up analog line 1.                    |
          |---------------+--------------------------------------------|
          |      H4       | Hangs up analog line 2.                    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    I-FIELD DATA LENGTH                     |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S114=n S115=n [cmds]              |
          |--------------+---------------------------------------------|
          | Default:     | Unidentified                                |
          |--------------+---------------------------------------------|
          | Range:       | 0-65535                                     |
          |--------------+---------------------------------------------|
          | Unit:        | N/A                                         |
          |--------------+---------------------------------------------|
          | Description: | These registers set the data length for the |
          |              | I-field. S114 stores the Most Significant   |
          |              | Byte, and S115 stores the Least Significant |
          |              | Byte. To set the correct value for S114,    |
          |              | use the formula S114 = INT(value/256). To   |
          |              | set S115, use the formula S115 = value -    |
          |              | S114 * 256.                                 |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  LOCAL SERIAL PORT SPEED                   |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S20=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Description: | Sets the speed of the local serial port.    |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |    S20=0     | Sets 921.6Kbps speed.                       |
          |--------------+---------------------------------------------|
          |    S20=1     | Sets 460.8Kbps speed.                       |
          |--------------+---------------------------------------------|
          |    S20=2     | Sets 230.4Kbps speed.                       |
          |--------------+---------------------------------------------|
          |   í S20=3    | Sets 115.2Kbps speed.                       |
          |--------------+---------------------------------------------|
          |    S20=8     | Sets 57.6Kbps speed.                        |
          |--------------+---------------------------------------------|
          |    S20=9     | Sets 38.4Kbps speed.                        |
          |--------------+---------------------------------------------|
          |    S20=10    | Sets 19.2Kbps speed.                        |
          |--------------+---------------------------------------------|
          |    S20=11    | Sets 9600bps speed.                         |
          |--------------+---------------------------------------------|
          |    S20=12    | Sets 4800bps speed.                         |
          |--------------+---------------------------------------------|
          |    S20=13    | Sets 2400bps speed.                         |
          |--------------+---------------------------------------------|
          |    S20=14    | Sets 1200bps speed.                         |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |           LOCAL SERIAL PORT SPEED ON AUTO-ANSWER           |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S18=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Description: | Sets serial port speed when modem           |
          |              | auto-answers an incoming call.              |
          |--------------+---------------------------------------------|
          |   Command    |                  Function                   |
          |--------------+---------------------------------------------|
          |     í 0      | Auto-detect current speed.                  |
          |--------------+---------------------------------------------|
          |      1       | Sets 921.6Kbps speed.                       |
          |--------------+---------------------------------------------|
          |      2       | Sets 460.8Kbps speed.                       |
          |--------------+---------------------------------------------|
          |      3       | Sets 230.4Kbps speed.                       |
          |--------------+---------------------------------------------|
          |      4       | Sets 115.2Kbps speed.                       |
          |--------------+---------------------------------------------|
          |      9       | Sets 57.6Kbps speed.                        |
          |--------------+---------------------------------------------|
          |      10      | Sets 38.4Kbps speed.                        |
          |--------------+---------------------------------------------|
          |      11      | Sets 19.2Kbps speed.                        |
          |--------------+---------------------------------------------|
          |      12      | Sets 9600bps speed.                         |
          |--------------+---------------------------------------------|
          |      13      | Sets 4800bps speed.                         |
          |--------------+---------------------------------------------|
          |      14      | Sets 2400bps speed.                         |
          |--------------+---------------------------------------------|
          |      15      | Sets 1200bps speed.                         |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                       METERING PULSE                       |
          |------------------------------------------------------------|
          | Format       | AT [cmds] S89=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Default:     | Unidentified                                |
          |--------------+---------------------------------------------|
          | Range:       | 0-96                                        |
          |--------------+---------------------------------------------|
          | Description: | Controls the generation of metering pulses  |
          |              | on the analog adapters.                     |
          |--------------+---------------------------------------------|
          | Bit  | Value |                  Function                   |
          |------+-------+---------------------------------------------|
          |  5   |     0 | Metering pulse for analog line 1 disabled.  |
          |      |       |                                             |
          |      |     1 | Metering pulse for analog line 1 enabled.   |
          |------+-------+---------------------------------------------|
          |  6   |     0 | Metering pulse for analog line 2 disabled.  |
          |      |       |                                             |
          |      |     1 | Metering pulse for analog line 2 enabled.   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                      PORT ASSIGNMENTS                      |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S125=n [cmds]                     |
          |--------------+---------------------------------------------|
          | Description: | Selects which ports may be in use.          |
          |------------------------------------------------------------|
          |    Command    |                  Function                  |
          |---------------+--------------------------------------------|
          |   í S125=0    | Serial port 2 disabled; analog port 2      |
          |               | enabled.                                   |
          |---------------+--------------------------------------------|
          |    S125=1     | Serial port 2 enabled; analog port 2       |
          |               | disabled.                                  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  PPP IDLE OUT PREVENTION                   |
          |------------------------------------------------------------|
          | Type:        | Register                                    |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S124=n [cmds]                     |
          |--------------+---------------------------------------------|
          | Default:     | 0                                           |
          |--------------+---------------------------------------------|
          | Range:       | 0-255                                       |
          |--------------+---------------------------------------------|
          | Unit:        | 1 second                                    |
          |--------------+---------------------------------------------|
          | Description: | Sends an empty packet after being idle for  |
          |              | the time specified to avoid disconnection   |
          |              | on PPP connections.                         |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     REPORT INFORMATION                     |
          |------------------------------------------------------------|
          | Type:        | Immediate                                   |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] In [cmds]                         |
          |--------------+---------------------------------------------|
          | Description: | Returns requested information about the TA. |
          |------------------------------------------------------------|
          |     Command     |                 Function                 |
          |-----------------+------------------------------------------|
          |       I0        | Displays product code.                   |
          |-----------------+------------------------------------------|
          |       I1        | Displays product information and ROM     |
          |                 | checksum.                                |
          |-----------------+------------------------------------------|
          |       I9        | Displays Plug-N-Play code.               |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 SERIAL PORT 2 DATA FORMAT                  |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] *Nn [cmds]                        |
          |--------------+---------------------------------------------|
          | Description: | Sets the parity used for the second serial  |
          |              | port.                                       |
          |------------------------------------------------------------|
          |     Command     |                 Function                 |
          |-----------------+------------------------------------------|
          |       *N0       | 8 data bits, no parity, 1 stop bit.      |
          |-----------------+------------------------------------------|
          |       *N1       | 7 data bits, even parity, 1 stop bit.    |
          |-----------------+------------------------------------------|
          |       *N2       | 7 data bits, odd parity, 1 stop bit.     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 SERIAL PORT 2 DATA FORMAT                  |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S46=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Description: | Sets the parity used for the second serial  |
          |              | port.                                       |
          |------------------------------------------------------------|
          |     Command     |                 Function                 |
          |-----------------+------------------------------------------|
          |      S46=0      | 8 data bits, no parity, 1 stop bit.      |
          |-----------------+------------------------------------------|
          |      S46=1      | 7 data bits, even parity, 1 stop bit.    |
          |-----------------+------------------------------------------|
          |      S46=2      | 7 data bits, odd parity, 1 stop bit.     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 SERIAL PORT 2 FLOW CONTROL                 |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] *Mn [cmds]                        |
          |--------------+---------------------------------------------|
          | Description: | Selects the flow control used on the second |
          |              | serial port.                                |
          |------------------------------------------------------------|
          |       Command       |               Function               |
          |---------------------+--------------------------------------|
          |         *M0         | Flow control disabled.               |
          |---------------------+--------------------------------------|
          |         *M1         | RTS/CTS flow control enabled.        |
          |---------------------+--------------------------------------|
          |         *M2         | XON/XOFF flow control enabled.       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 SERIAL PORT 2 FLOW CONTROL                 |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S45=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Description: | Selects the flow control used on the second |
          |              | serial port.                                |
          |------------------------------------------------------------|
          |       Command       |               Function               |
          |---------------------+--------------------------------------|
          |        S45=0        | Flow control disabled.               |
          |---------------------+--------------------------------------|
          |        S45=1        | RTS/CTS flow control enabled.        |
          |---------------------+--------------------------------------|
          |        S45=2        | XON/XOFF flow control enabled.       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    SERIAL PORT 2 SPEED                     |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] *An [cmds]                        |
          |--------------+---------------------------------------------|
          | Description: | Sets the speed of the second serial port.   |
          |--------------+---------------------------------------------|
          | Note:        | This command may only be issued through     |
          |              | port 1.                                     |
          |------------------------------------------------------------|
          |     Command      |                Function                 |
          |------------------+-----------------------------------------|
          |      í *A1       | Set serial port speed to 115.2Kbps.     |
          |------------------+-----------------------------------------|
          |       *A2        | Set serial port speed to 76.8Kbps.      |
          |------------------+-----------------------------------------|
          |       *A3        | Set serial port speed to 57.6Kbps.      |
          |------------------+-----------------------------------------|
          |       *A4        | Set serial port speed to 38.4Kbps.      |
          |------------------+-----------------------------------------|
          |       *A5        | Set serial port speed to 19.2Kbps.      |
          |------------------+-----------------------------------------|
          |       *A6        | Set serial port speed to 9600bps.       |
          |------------------+-----------------------------------------|
          |       *A7        | Set serial port speed to 2400bps.       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    SERIAL PORT 2 SPEED                     |
          |------------------------------------------------------------|
          | Type:        | Configuration                               |
          |--------------+---------------------------------------------|
          | Format:      | AT [cmds] S43=n [cmds]                      |
          |--------------+---------------------------------------------|
          | Description: | Sets the speed of the second serial port.   |
          |------------------------------------------------------------|
          |     Command      |                Function                 |
          |------------------+-----------------------------------------|
          |      S43=0       | Set serial port speed to 230.4Kbps.     |
          |------------------+-----------------------------------------|
          |     í S43=1      | Set serial port speed to 115.2Kbps.     |
          |------------------+-----------------------------------------|
          |      S43=2       | Set serial port speed to 76.8Kbps.      |
          |------------------+-----------------------------------------|
          |      S43=3       | Set serial port speed to 57.6Kbps.      |
          |------------------+-----------------------------------------|
          |      S43=4       | Set serial port speed to 38.4Kbps.      |
          |------------------+-----------------------------------------|
          |      S43=5       | Set serial port speed to 19.2Kbps.      |
          |------------------+-----------------------------------------|
          |      S43=6       | Set serial port speed to 9600bps.       |
          |------------------+-----------------------------------------|
          |      S43=7       | Set serial port speed to 2400bps.       |
          +------------------------------------------------------------+
       
          See ZYXEL COMMUNICATIONS CORPORATION ELITE 2864I-U for a full
                                 command summary.
       
          +------------------------------------------------------------+
          |               MISCELLANEOUS TECHNICAL NOTES                |
          |------------------------------------------------------------|
          | When the referenced document refers to "A/B adapter",      |
          | these commands apply to analog line 1. When it refers to   |
          | "fax/data modem", they apply to analog line 2.             |
          +------------------------------------------------------------+