Path: utzoo!utgpu!attcan!uunet!husc6!soi!sam
From: sam@soi.UUCP (Sam Lipson)
Newsgroups: sci.electronics
Subject: how do you interface to the analog side of a Codec? (AT&T 7500)
Keywords: Codec amplifiers? telephone handset levels
Message-ID: <385@soi.UUCP>
Date: 8 Aug 88 17:30:52 GMT
Organization: Software Options Inc.,  Cambridge,  Mass.
Lines: 25


	I'm in the process of building a (pair of) ISDN cards
for the PC bus.  I've got one B channel allocated for data
and the other for voice.

	I've got an AT&T 7500 Codec for the voice channel,  but
am having difficulty understanding how I should interface to a
telephone handset.

	I'd appreciate pointers,  references,  helpful hints,
tutorials or any other information.  Pointers to application notes
for other Codec's,  or handset info. are also welcome.  [My AT&T
salesperson leads me to believe there is no application note for
the 7500.]

	I'm also looking for modular (i.e. telephone) connectors
with wire wrap connections.  Anyove ever seen such a thing?

		Thanks in advance,

			Sam Lipson
			Software Options

		harvard!soi!sam
		soi!sam%harvard.harvard.edu