Path: utzoo!telecom-request Date: Sun, 9 Jun 91 14:06:40 PDT From: portal!cup.portal.com!TRADER@uunet.uu.net Newsgroups: comp.dcom.telecom Subject: Re: Questions on LAPD Message-ID: 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 11, Issue 444, Message 9 of 10 Lines: 18 I've been working on an ISDN interface and I have also had questions about Layer 3 services (call control). I have a copy of the CCITT Q.931 specs, but I also have a copy of Bellcore Technical Reference TR-TSY-000776, "Network Interface Description for ISDN Customer Access" (You can get this from the CIC). The manual states that the call control protocol is a subset of Q.931, sort of a generic ISDN call control protocol. What's the status on this? From what I can see, the generic call control stuff looks like it would work with AT&T 5ESS switches and probably others, although there aren't many features that are used. If I wrote code for this kind of generic switch, would that be enough for simple call setup?? Paul McGinnis / TRADER@cup.portal.com