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From: jhf@cblpe.att.com (Jeffri H Frontz)
Newsgroups: comp.dcom.telecom
Subject: Re: Distinctions and Definitions Needed
Message-ID: <14207@accuvax.nwu.edu>
Date: 31 Oct 90 18:23:43 GMT
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X-Telecom-Digest: Volume 10, Issue 779, Message 7 of 13


In article <14030@accuvax.nwu.edu>, 0004056081@mcimail.com (George S
Thurman) writes:

> Could some of you Telecom Experts out there tell me (in simple terms)
> the difference between SS7 and CCIS.

Well, here in CNI (Common Network Interface -- we do the signaling
portion of all US versions and some international versions of AT&T's
switches, STPs and NCPs), we use SS7 and CCS7 interchangeably to refer
to the North American adaptation of the CCITT Signaling System #7
(commonly referred to around here as CCITT7).

CCIS is usually used to refer to CCS6 or to CCS6 traffic transported
via CCS7 (actually, ECIS, Embedded Common channel Interoffice
Signaling, is a more appropriate term for the latter).


Jeff Frontz                  Work:  +1 614 860 2797
AT&T-Bell Labs (CB 1C-356)   Cornet:       353-2797
att!jeff.frontz              jeff.frontz@att.com