I have two asterisk servers connected using IAX. Server A has a
TE410P running on a Xeon 2.4Ghz with 2GB RAM and 36G IDE HD on Debian
2.6.11-1-686 and Asterisk CVS-Nv1-0-7-06/01/05-01:27:25.
Server B does not have any Digium board, but has ztdummy and zaptel
loaded. It's runnin on a P4 1.6Ghz with 1GB RAM and 36G SCSI RAID 10
on Gentoo 2.6.11-gentoo-r9 and Asterisk 1.0.7.
The relevant section of iax.conf looks like:
[gateway0]
type=friend
user=gateway0
secret=guess
context=default
host=10.0.10.199
trunk=yes
notransfer=yes
canreinvite=no
disallow=all
allow=ulaw
When I dial from Server B thru Server A, I simply issue: Dial($
{GATEWA}/${EXTEN},,r), where ${GATEWAY} points to the IAX2 trunk
information.
The problem I have is that every once in a while, people complained
that voice quality gets really bad, even to the point that one party
doesn't hear the other. This probably happens once or twice a day.
What I did to resolve it, was simply to run 'restart now' on Server
B, and that fixed the problem.
I am looking at the server today and I see that there is only two
people on the phone. However, when I do show channels on Server B, it
seems like there were 52 active channels, all of them showing
outbound calls thru Server A and a similarly high count on Server A.
I guess what is happening is that the calls don't seem to be getting
disconnected. I don't know if the actual leg to the PSTN is still
open (and I'm being billed) or if it's simply the channel in the
trunk between the two machines. How can I find out what is exactly
happening? When I do the show channels in Server A, it does show the
channels going out on Zap/g?, which leads me to think that I'm being
billed for these calls which were disconnected a while ago.
Also, I think the fact that calls are not getting disconnected and
keep the trunk open are the cause of the audio quality being reported
and when doing a restart now, it simply terminates all those calls.
Is there something in the config I can change to fix this or should I
upgrade to a newer CVS version? Help please.
Could it have something to do with ztdummy? I used to run Server B
without ztdummy for about a week and I don't really recall getting
the audio quality complaints. Of course, I haven't tested again
Server B without ztdummy running.
Thanks,
Waldo
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