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Plan 9 - man page for telco (plan9 section 4)

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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 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 dk(3) and 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

	      turn on compression (default off)

	      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 facsimile 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 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 are:

       MT1432 Multitech's 14400 baud modem

       MT2834 Multitech's 28800 baud modem

	      the 14400 baud modem in Safaris

       VOCAL  the 14400 baud Vocal modem

       All other modems are assumed to be compatible with the standard Hayes command subset.

       Faxreceive  is normally started by /rc/bin/service/telcofax.  It inputs 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 /mail/faxqueue.

       -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 queues PostScript, G3, or text files to be transmitted to a fax
       machine.  A standard cover sheet, derived from /sys/lib/fax/h.ps, is sent before the  mes-
       sage.   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 sent.

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

	      telco /dev/eia1
	      con -l telco!18005551212

       Since cu (see con(1)) knows about telco, this is equivalent:

	      cu 18005551212

       The connection will be made at the highest negotiable baud rate.  To use  the  best  nego-
       tiable compression scheme as well:

	      cu 18005551212!compress



       con(1), dk(3), 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.

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