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where to find statistics about Linux installation in the telco industry
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TELCO(4) Kernel Interfaces Manual TELCO(4) NAME
telco, faxreceive, faxsend, fax, telcofax, telcodata - telephone dialer network SYNOPSIS
telco [ -p ] [ -i source-id ] [ -v ] dialer-devs aux/faxsend address page1 ... aux/faxreceive [ -s spool-dir ] [ -v ] fax telno recipient [ files ] service/telcofax service/telcodata DESCRIPTION
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 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 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 sup- ported are: 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 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 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 sent. EXAMPLE
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 negotiable compression scheme as well: cu 18005551212!compress FILES
/mail/faxqueue/* /rc/bin/service/telcodata /rc/bin/service/telcofax /sys/log/telco /sys/lib/fax/receiverc /sys/lib/fax/recipients /sys/lib/fax/h.ps /sys/log/fax SOURCE
/sys/src/cmd/telco/* /sys/src/cmd/fax/* SEE ALSO
con(1), dk(3), ip(3) BUGS
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. TELCO(4)
