asterisk users - Feb 2005 - E1 and/or Euro-ISDN specifications?

Where can I get E1 and/or Euro-ISDN specifications/data sheets?
Are there specs for other E./G./Q./etc. protocols as well?

Thanks!

On Tue, 15 Feb 2005, Daniel Nystr?m wrote:
> Where can I get E1 and/or Euro-ISDN specifications/data sheets?
> Are there specs for other E./G./Q./etc. protocols as well?
The specifications are built one on top of another. Each just lists the 
changes and clarifications relative to the underlaying specification. 
E.g. for the Swedish incumbent operator Telia you have:

 * Telia ISDN Notes for Suppliers
 * ETSI specifications (e.g. ETSI ETS 300 403 01 etc)
 * ITU specifications (e.g. Q.931, Q.921 and lots and lots of others)

The Telia implementation specification is free, as are the ETSI 
specification (at least for some uses). The ITU specifications are a bit 
expensive, but you can download three for free.

Most of the time the ITU specifications are at the "bottom level", but
not
always.

Peter

Go to the ITU website www.itu.org there you can buy all the specifications
you're looking for.

-----Original Message-----
From: asterisk-users-bounces@lists.digium.com
[mailto:asterisk-users-bounces@lists.digium.com]On Behalf Of Daniel
Nystr?m
Sent: Tuesday, February 15, 2005 8:47 AM
To: asterisk-users@lists.digium.com
Subject: [Asterisk-Users] E1 and/or Euro-ISDN specifications?


Where can I get E1 and/or Euro-ISDN specifications/data sheets?
Are there specs for other E./G./Q./etc. protocols as well?

Thanks!
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