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Dialcodes - Contains the initial digits of telephone numbers used to
establish remote connections over a telephone line
The /usr/lib/uucp/Dialcodes file contains the initial digits of telephone
numbers used by the uucp program to establish remote connections over a
telephone line. The Dialcodes file simplifies entries in the
/usr/lib/uucp/Systems file for sites where a number of device telephone
numbers have the same prefix. If users at your site communicate regularly
by way of telephone lines and modems to multiple systems all located at the
same remote site, or to multiple systems located at different remote sites,
use dial-code abbreviations in the /usr/lib/uucp/Systems file rather than
entering the complete telephone number of each remote modem in that file.
The Dialcodes file contains dial-code abbreviations and partial telephone
numbers that complete the telephone entries in the /usr/lib/uucp/Systems
file. Entries in the Dialcodes file contain an alphabetic prefix attached
to a partial telephone number that may include the following information,
in the order listed:
1. Codes for an outside line.
2. Long-distance access codes (1 and the area code, if the modem is out
of the local area).
3. The 3-digit exchange number. The relevant alphabetic prefix
(representing the partial telephone number), together with the
remaining four digits of that number, is then entered in the Phone
field in the /usr/lib/uucp/Systems file.
Following is the form of an entry in a Dialcodes file:
The DialCodeAbbreviation part of the entry is an alphabetic prefix
containing up to eight letters, established when setting up the dial-code
The DialingSequence comprises all the digits in the number that precede the
actual 4-digit telephone number.
Note that if your site uses only a relatively small number of telephone
connections to remote systems, include the complete telephone numbers of
the remote modems in the /usr/lib/uucp/Systems file rather than using
Enter each prefix only once in the Dialcodes file. When you have set up a
dial-code abbreviation, use that prefix in all relevant entries in the
Only someone with superuser authority can edit the Dialcodes file, which is
owned by the uucp program login ID.
The Dialcodes file on system venus contains the following dial-code prefix
for use with a number in the /usr/lib/uucp/Systems file:
The Systems file on system venus contains the following entry for system
zeus, including a telephone number and a dial-code prefix:
zeus Any ACU 1200 local1212 in:--in: nuucp word: thunder
When the uucp program on system venus dials system zeus, it uses the
expanded telephone number =5551212.
Contains all the configuration files for the uucp program, including
the Dialcoddes file
Contains information about available devices
Specifies initial handshaking on a connection
Describes accessible remote systems
Commands: cu(1), tip(1), uucp(1), uuto(1), uux(1)
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