[Asterisk-Users] E&M DID config question

[Steven Critchfield]

First off, caller ID should be in the q.931 packets and not on the B
channels of a PRI. So if the fsk spill is causing problems, go back to
full PRI and turn off callerid from your telco.

One thing I noticed below is you don't have your D channel defined in
zapata.conf.

I think for e&m you need immediate= no. It appears that from your
message below that you are picking up the line, and you are not getting
DTMF so it is trying to go to a s extension that doesn't exist.

It seems odd that the telco would split a PRI to give E&M on the same
T1. If they aren't doing that, it would explain the lack of DTMF, but
then I don't think you would get ring events. Ring events for a PRI are
in the D channel where E&M are in the robbed bit.

On Sat, 2003-07-05 at 13:57, Daryl Jones wrote:
> I am trying to make an in/out trunk group comprised of 4 DS0's using
> E&M Wink signalling.  The first four channels of a DS1 on a T100P
> are being used for the group.  Outbound calls work fine, but inbound
> calls fail.  The other 20 DS0 channels are used for a PRI. Does the
> configuration shown below look okay?  I've tried setting 'immediate => yes'
> without success, but it doesn't seem to make any difference..
> 
> It seems like Asterisk never gets any digits from the upstream switch. I don't
> think the upstream switch gets a wink from Asterisk, but I am not sure.
> 
> Here's what the console log shows.
> 
> -- Starting simple switch on 'Zap/1-1'
>    File chan_zap.c, Line 3772 (ss_thread): getdtmf on channel 1: Operation now in progress
> == Unknown extension 's' in context 'default' requested
> -- Playing 'ss-noservice'
> -- Hungup 'Zap/1-1'
> 
> Incidentally, inbound calls on the PRI are immediately disconnected when
> inbound caller-id info is present. The E&M trunk group is an attempt to
> workaround this problem.
> 
> =================
> zapata.conf
> 
> [channels]
> 
> group => 1
> context => default
> switchtype => national
> signalling => pri_cpe
> callerid => asreceived
> amaflags => billing
> pri_dialplan => national
> echocancelwhenbridged => yes
> echocancel => 128
> channel => 5-23
> 
> group => 2
> signalling => em_w
> context => default
> immediate => no
> amaflags => billing
> echocancelwhenbridged => yes
> channel => 1-4
> 
> =================
> zaptel.conf
> 
> span=1,0,0,esf,b8zs
> bchan=5-23
> dchan=24
> loadzone=us
> defaultzone=us
> e&m=1-4
> 
> 
> 
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-- 
Steven Critchfield <critch at basesys.com>