ZYXEL COMMUNICATIONS CORPORATION

U-1496P/U-1496P+

Modem Type                  Data (synchronous/asynchronous)/Fax/Voice
Maximum Data Rate           19.2Kbps
Maximum Fax Rate            14.4Kbps
Data Bus                    External
Fax Class                   Class I & II
Data Modulation Protocol    Bell 103A/212A

                            CCITT V.21, V.22, V.22bis, V.23, V.26bis,
                            V.27bis, V.29, V.32, V.32bis, V.33

                            ZyXEL 16.8Kbps, 19.2Kbps, ZyCELL
                            4800bps-19.2Kbps cellular
Fax Modulation Protocol     ITU-T V.17, V.21CH2, V.27ter, V.29
Error                       MNP2-5, V.42, V.42bis
Correction/Compression

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                                CONNECTIONS

        Purpose           Location            Purpose            Location

  Line in                   CN1       DC power                     CN3

  Line out                  CN2       RS-232/422                   CN4

                             DIAGNOSTIC LED(S)

    Color            Status                       Condition

    Green              On              Power is on, and modem is idle.

    Green           2s blink                  Modem is dialing.

    Green           1s blink                Modem is handshaking.

    Green          Fast blink        Modem is receiving/transmitting data

    Green      2s on/4s off blink             Line is ringing.

     Red               On                  Signal quality is poor.

  Red/Green         Blinking               An error has occurred.

                          Proprietary Command Set

               See document V1036 for a full command summary.