[Asterisk-Users] Asterisk without D-Channel possible?

[Peter Svensson]

On Wed, 1 Dec 2004, Steve Underwood wrote:

> Patrick wrote:
> >I'm running an Asterisk 1.0 server with 4 HFC cards and bri-stuff behind an
> >"Anlagenanschluß" with 8 B-channels in Germany. It worked fine with Deutsche
> >Telekom, but since we switched to Arcor nothing works at all.
> >After some debugging, I called Arcor helpdesk who told me that they do not
> >have a D-Channel and cannot signal one at my request either.
> >
> >Is it possible to use Asterisk without a D-Channel? What should my
> >zaptel.conf and zapata.conf look like?
> >  
> >
> Sure its possible. It isn't much use, though :-)
> 
> The D channel carries the signalling. No D channel, no call control. You 
> just have 8 open, but useless voice channels.

Maybe he has NFAS (Non Facility Associated Signalling) where the D channel 
on one of the BRI lines handles the signalling for the B channles on all 4 
BRIs.

There is support for NFAS in Asterisk via "trunkgroups" in the zapata.conf 
config file. I have no idea if this works for bri-stuff as well. It may, 
since both are zapata devices.

Peter