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