AN/TTC-42 Automatic Telephone Central Office
The AN/TTC-42 is a sheltered automatic telephone switch which provides automatic
switch and subscriber service for the TRI-TAC family or 4-wire analog and digital
telephones including DSVT (secure telephone), DNVT (non-secure telephone), and
analog telephones. The switch has six modems with 18 channel capability and one
modem with 72 channel capability. The maximum number of single channel telephone
subscribers is 100. The switch provides access to all other switches in the tactical
network as well as commercial and Autovon circuits.
The TTC-42 Automatic Telephone Central is a state of the art digital telephone
communications switch. It is extremely reliable and provides maximum user service with
very minimal down time. The TTC-42 is designed to interoperate with most any type of
communications equipment including Joint Service and world wide NATO networks.
The TTC-42ís modem capabilities include seven modems, with six modems capable of
17 assignable channels, and one modem capable of using 71 assignable channels. There
are six trunk encryption devices which are used one per modem if desired. The
TTC-42ís single channel capabilities consist of 100 terminationís. The TTC-42 has 36
analog and 64 digital terminationís, which translates into 36 possible analog telephones
and 64 possible digital telephones. It can also provide COMSEC parent functions for
up to 16 COMSEC subordinate switches and provide end to end loop encryption for
any connected KY-68.
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Updated Saturday, January 09, 1999 10:27:01 AM