[Asterisk-Users] (UN)structured E1

[Peter Svensson]

On Tue, 11 Jan 2005, Alex G Robertson wrote:

> http://ckp.made-it.com/g704.html says:
> "G.704 is the framing specification for G.703. A carrier can 'steal' a 64kbps 
> time slot (TS0) from a 2.048 Mbps line and use this to provide timing. The 
> result is that 31 time slots are left for data, which equals in a bandwidth of 
> 1.984 Mbps.
> 
> Normally G.703 lines with G.704 framing is called Structured G.703. Carriers 
> offer G.704 when their network is built up on a cross-connect basis, and will 
> offer unstructured G.703 when their infrastructure is based upon multiplexers."
> 
> But, what about Asterisk and Digium TDM interface TE405/TE410 ?
> Does it support Structured and Unstructured framing?

If you ask your telco to set up an ISDN PRI they should have most of the 
information they need. 

A PRI is carried over a structured T1/E1. I don't think the Digium cards 
can be operated as a raw (unstructured, non-channelized) T1/E1.

Peter