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- Path: sparky!uunet!zaphod.mps.ohio-state.edu!news.acns.nwu.edu!telecom-request
- Date: Tue, 18 Aug 92 01:12:25 EDT
- From: Tony Harminc <TONY@VM1.MCGILL.CA>
- Newsgroups: comp.dcom.telecom
- Subject: Information Wanted: Toryo Model CT-100 Phone System
- Message-ID: <telecom12.639.7@eecs.nwu.edu>
- Organization: TELECOM Digest
- Sender: Telecom@eecs.nwu.edu
- Approved: Telecom@eecs.nwu.edu
- X-Submissions-To: telecom@eecs.nwu.edu
- X-Administrivia-To: telecom-request@eecs.nwu.edu
- X-Telecom-Digest: Volume 12, Issue 639, Message 7 of 14
- Lines: 23
-
- A place where I am doing some contract work has an old interphone
- system installed but not in use. The sets have twelve button keypads
- which do not emit tones. The numbering scheme seems to be two digits,
- though the system as installed has only six or seven sets.
-
- There appears to be no central switch -- each set is wired to a common
- five pair cable. There is a central 24V power supply. Each set has
- a plug -- a clip really, that appears to set the address, though it's
- not clear how the dialed digits are related to the plug setting.
-
- The sets look like something from the early 1970s, but if so, I'm
- surprised that enough electronics of that vintage fits in quite small
- packages.
-
- Has anyone heard of these or at least of the company ? I would like
- to get a manual.
-
- Many thanks,
-
-
- Tony Harminc tony@vm1.mcgill.ca
-
-