TELCO(4)                                                 TELCO(4)

          telco, faxreceive, faxsend, fax, telcofax, telcodata -
          telephone dialer network

          telco [ -p ] [ -i source-id ] [ -v ] dialer-devs

          aux/faxsend address page1 ...

          aux/faxreceive [ -s spool-dir ] [ -v ]

          fax [ -v ] telno recipient [ files ]



          Telco is a file server that provides a network interface to
          Hayes telephone dialers.  The interface is the same as that
          provided by ip(3) and can be used by any program that makes
          network connections using dial(2). The network addresses
          used by telco are telephone numbers.

          The options are

          -p   use pulse dialing

          -v   verbose: write to the log file all communications with
               the dialer.

          -i   specify a source-id to be used during FAX transfers

          Some control of outgoing calls can be encoded in the
          address.  Normally, addresses are of the form telco!number,
          where number is a decimal telephone number.  However, commas
          in the telephone number can be used to insert pauses in the
          dialing process.  Dialing options can be added to the end of
          the address, separated by !'s.  The dialing options are

          compress  turn on compression (default off)
          baudrate  a decimal number representing the highest baud
                    rate with which to make the call
          fax       to make a Class 2 facsimile call (used by programs
                    such as faxsend)

          Telco also answers incoming calls.  Upon receiving a facsim-
          ile call, telco starts the script /rc/bin/service/telcofax.
          For data calls it starts /rc/bin/service/telcodata.  Each is
          started with the network connection as both standard input

     Page 1                       Plan 9             (printed 4/23/24)

     TELCO(4)                                                 TELCO(4)

          and standard output and with two arguments, the file name of
          the network connection, e.g., /net/telco/0/data, and the
          type of modem.  Currently, the only modem types supported

          MT1432    Multitech's 14400 baud modem
          MT2834    Multitech's 28800 baud modem
          ATT14400  the 14400 baud modem in Safaris
          VOCAL     the 14400 baud Vocal modem

          All other modems are assumed to be compatible with the stan-
          dard Hayes command subset.

          Faxreceive is normally started by /rc/bin/service/telcofax.
          It reads and spools a CCITT Group 3 (G3) encoded FAX, and
          then starts the script /sys/lib/fax/receiverc, passing it
          four arguments: the spool file name, Y (for success) or N,
          the number of pages, and the id string passed by the caller.
          This script sends by mail(1) notification to a list of
          recipients kept in the file /mail/faxqueue/faxrecipients;
          the script and the list should be edited to match local
          needs.  Faxreceive's options are:

          -s   specify a different spool directory; the default is

          -v   verbose: write to the log file all communications with
               the modem.

          Faxsend transmits a FAX to address. Page1 and all arguments
          that follow are names of files containing G3 encoded FAX
          images, one per page.

          Fax is a shell script that converts to G3 format PostScript,
          G3, text, or other files acceptable to lp(1) and queues the
          result to be transmitted to a FAX machine.  A standard cover
          sheet, derived from /sys/lib/fax/, is sent before the
          message.  Telno is the destination telephone number.
          Recipient is the name of the recipient to be placed on the
          cover sheet.  If no files are specified, standard input is
          converted and sent.  The -v option invokes page(1) on the
          generated G3 files instead of transmitting them via FAX

          Start the dialer on a PC, then use con to phone out.

               telco /dev/eia1
               con -l telco!18005551212

          The connection will be made at the highest negotiable baud
          rate.  To use the best negotiable compression scheme as

     Page 2                       Plan 9             (printed 4/23/24)

     TELCO(4)                                                 TELCO(4)


               con -l telco!18005551212!compress



          con(1), ip(3)

          These programs require the Class 2 facsimile interface.
          This means that faxsend and faxreceive will not work on most
          portable computers since they have Class 1 interfaces.

          The modem specific information is currently built into the
          source.  This should be in a user modifiable file.

     Page 3                       Plan 9             (printed 4/23/24)