CONTROLLING THE MODEM

 Selecting the fourth option of the Configuration Menu shows a
 screen-full of default settings that Telix uses to control the
 modem and its output. The default configuration that Telix
 comes with is set up for Hayes compatible modems. These modems
 use the 'AT' command set. By changing these settings Telix can
 work with almost any modem. The parameters are:

     A: Modem initialization string. This string will be sent
        to the modem when Telix first starts. Different modems
        might need different strings. The default string is set
        up for Hayes compatible modems. It is:

           'ATZ^M~~AT S7=45 S0=0 V1 X1^M   where:


           AT   is the modem attention code.
           Z         resets the modem to default state
           ^M        sends the terminating Carriage Return
                     character to the modem.

           ~~        pauses to give the modem time
           AT        is the modem attention code.

           S7=45     makes the modem wait 45 seconds for a con-
                     nection.
           S0=0      turns off auto answer.
           V1        makes the modem respond with words.
           X1        makes the modem give extended result
                     codes. It is important that if your modem
                     supports a higher 'X' value, you use that
                     instead. For example, on a Hayes 2400,
                     'X4' enables BUSY signal detection.

           ^M        sends the terminating Carriage Return
                     character to the modem.

     B: Dialing prefix 1. A Dialing prefix is what Telix sends
        to the modem when dialing, before the number, for exam-
        ple, 'ATDT' for Hayes compatible modems. There are
        three dialing prefixes allowed, and in the dialing di-
        rectory you may chose which one to use for each entry.
        One use for this is if your modem support MNP, to de-
        fine two prefixes which turn MNP support on and off,
        thus avoiding the delay when you call a system that
        doesn't support MNP.

     C: Dialing prefix 2:

     D: Dialing prefix 3.

     E: Dialing postfix. This is the string Telix should send
        after the number when dialing. On Hayes compatible
        modems this is just a Carriage Return character, '^M'.

     F: Connect string. This is the string which the modem
        sends upon getting a connection. e.g., 'CONNECT'

     G: No connect strings. These are up to four strings which
        the modem sends when it has failed to make a connection
        while dialing, for example 'NO CARRIER', 'BUSY', etc.

     H: Hang-up string. This is the string Telix should send to
        the modem to make it hang up. The default string works
        for Hayes compatible modems and is:

           '~~~+++~~~ATH0^M'       where

           ~~~       pauses Telix for 1 1/2 secs.
           +++       escapes the modem into command mode.
           ~~~       pauses Telix for 1 1/2 secs.

           AT        is the modem attention code.
           H0        tells the modem to hang up.
           ^M        sends the terminating Carriage Return
                     character to the modem.

        Before sending this string to the modem Telix always
        tries to hang-up the modem by a faster way that works
        with MOST modems. This is done by dropping (turning
        off) a special signal called the DTR (Data Terminal
        Ready) line on the RS-232 port. If dropping the DTR
        makes the modem hang-up then the hang-up string is not
        sent to the modem.

     I: Auto Answer string. This is the string that Telix
        should send to the modem upon entering Host Mode. This
        string should allow the modem to automatically pick up
        the phone when it rings, and initialize it in any other
        ways that might be necessary.

     J: Dial cancel string. This is the string Telix should
        send to the modem to cancel the current dialing at-
        tempt. On most modems all that is necessary is a Car-
        riage Return character, "^M".

     K: Dial time. This is the amount of time Telix should wait
        for a connection while dialing. This should usually be
        set to be greater than the amount of time the modem
        waits for the connection.

     L: Redial pause;. This is the number of seconds Telix
        should wait between attempts while redialing.

     M: Auto baud detect (on/off). If this option is on and
        Telix dials a number, it will check the modem connect
        message for a baud rate indication. If the baud is dif-
        ferent than was specified for the entry being dialed,
        Telix switches to the new baud rate. This option only
        works with Hayes compatible modems. This option must
        not be enabled when you have told the modem to maintain
        a constant or locked baud rate between the computer and
        the modem, as is often done with high-speed, error cor-
        recting modems, or modems supporting MNP (e.g. USR HST,
        Hayes V-Series, etc.).