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Joined: Sep 2006
Posts: 3,290
Member
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OP
Member
Joined: Sep 2006
Posts: 3,290 |
A friend who collects old phone stuff, but who is not a member of this forum, has asked me to forward this request:
I'm looking for the above document,
(AT&T/Harris-Dracon Installation Manual II722022-001)
which is related to an AT&T/Harris PagePac-I voice paging amplifier and/or the final version of the PagePac-i Voice Paging System Installation Instructions, or any other user document. I have the preliminary version "11/86-1" of the installation instructions.
The unit is a compact desk-top paging amplifier capable of driving (24) 45 Ohm speakers, i.e. an ~2 Ohm load, powered by a wall wart. Curiously, it contains a Mitel Touchtone receiver chip and a Zilog Z8 MCU.
I'd like to find out what purpose they serve in an audio power amplifier. Presumably there is some DTMF code sequence which performs some special function. There's no way to determine the code sequence without a more detailed user or installer doc. than what I have.
Arthur P. Bloom
"30 years of faithful service...15 years on hold"
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