<br><br><div class="gmail_quote">On Fri, Nov 12, 2010 at 1:17 PM, Ernie Dunbar <span dir="ltr"><<a href="mailto:maillist@lightspeed.ca">maillist@lightspeed.ca</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
We have two Asterisk servers. One is a live server supporting our<br>
customers, and the other is a backup server that's being upgraded and<br>
pressed into service. Both servers have a Digium TE405P T1 card in them,<br>
and in order to test the T1 service on the backup server, I've created a<br>
T1 crossover cable (as per<br>
<a href="http://www.voip-info.org/wiki/view/crossover+T1+cable" target="_blank">http://www.voip-info.org/wiki/view/crossover+T1+cable</a>) that goes from port<br>
4 on the live server to port 1 on the backup server. Both TE405P's have<br>
been configured, and I get a green light on port 4 on the live server and<br>
port 1 on the backup server.<br>
<br>
The problem I have is trying to route calls through this T1 connection. To<br>
the best of my knowledge, this configuration on the live server should<br>
work:<br>
<br>
In /etc/asterisk/chan_dahdi.conf:<br>
<br>
group=4<br>
context=local<br>
switchtype = national<br>
signalling = pri_cpe<br>
channel => 73-95<br>
context = default<br>
group = 63<br>
<br>
In /etc/asterisk/extensions.conf:<br>
<br>
exten => _*88,1,Dial(DAHDI/g4/123456789)<br>
<br>
However, in the Asterisk console, I get this error on the live server:<br>
<br>
-- Executing [*88@lightspeedout:1] Dial("SCCP/lightspeed7-00000062",<br>
"DAHDI/g4/123456789") in new stack<br>
[Nov 12 09:24:41] WARNING[1970]: app_dial.c:1286 dial_exec_full: Unable to<br>
create channel of type 'DAHDI' (cause 0 - Unknown)<br>
== Everyone is busy/congested at this time (1:0/0/1)<br>
== Auto fallthrough, channel 'SCCP/lightspeed7-00000062' status is<br>
'CHANUNAVAIL'<br>
<br>
And no messages at all on the backup server, except this one every 4 seconds:<br>
<br>
[Nov 12 10:08:04] WARNING[4473]: chan_dahdi.c:4169 pri_find_dchan: No<br>
D-channels available! Using Primary channel 24 as D-channel anyway!<br>
<br>
Which Googling reveals to be a fairly mundane and harmless warning message<br>
(it happens on real T1's apparently, and isn't related to any kind of<br>
outage).<br>
<br>
Also, I'm not entirely sure how to enable changes to chan_dahdi.conf<br>
without restarting asterisk or otherwise killing the 15+ DAHDI channels in<br>
progress. Doing this at off-peak times is very slow, as I'm asleep during<br>
those times, and thus it can only happen once per day.<br>
<br>
<br></blockquote><div><br>On the main server, if you type, dahdi show channels or whatever, do you see the fourth span? <br><br>Your configuration should probably be signalling = pri_net and the new server should be signalling = pri_cpe<br>
<br>Thanks,<br>Steve T<br></div></div>