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From: fmsystm!macy@hal.cwru.edu
Newsgroups: comp.dcom.telecom
Subject: Looking For Tie Line Adapter
Message-ID: <2265@accuvax.nwu.edu>
Date: 19 Dec 89 10:35:21 GMT
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X-Telecom-Digest: Volume 9, Issue 582, message 8 of 10


I'm looking for a tie line adapter card/unit.

It's normal application would to add two way dial repeating tie lines
(probably two wire E&M or loop signalling) to a system not normally
able to provide such a function.

The most desirable configuration would be to accept one loop|ground
start trunk (for outgoing) and one station (for incoming) from the
host system and provide a standard tie trunk function interface:

                      +--------------+
     Station <--------|              |
                      |   Adapter    |<--------> 2W E&M to carrier
     Trunk   -------->|              |
                      +--------------+
                              ^
                              |
                            Power

I saw a unit advertised for this purpose several years ago (for a
Mitel SX-20, I think) but did not remember who made it.  I don't find
this in any of the usual catalogs/source, either.

I could design and build one easily enough, but I have learned from
hard experience over the years that off-the-shelf is usually a better
choice.

Thanks in advance to all.  Regards,


 Macy M. Hallock, Jr.     macy@NCoast.ORG         uunet!aablue!fmsystm!macy
 F M Systems, Inc.      {uunet!backbone}!cwjcc.cwru.edu!ncoast!fmsystm!macy
 150 Highland Drive      Voice: +1 216 723-3000 Ext 251  Fax: +1 216 723-3223
 Medina, Ohio 44256 USA   Cleveland:273-3000 Akron:239-4994 (Dial 251 at tone)
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