Hi Group
I have started a new thread although this is a continuation of my intermittent
issues with sip trunks not coming back after a network outage.
After some testing in the lab I have realised that most of these problems are
related to DNS resolution.
Basically I am using sip domain names for all my providers so DNS resolution is
necessary. What I have found is that if for some reason DNS resolution is not
possible (e.g. network is down), if the system is rebooted or Asterisk loses
the resolved address, it no longer sends the OPTIONS pings as it cant find the
address obviously.
Yes that makes sense however the problem arises when the network is restored,
Asterisk is completely unaware and therefore makes no attempt in resolving the
address.
I believe this is what is causing my intermittent issues which is easily
resolved by doing an Asterisk Reload when network connectivity is restored. I
have also enabled the Asterisk dnsmgr which does not fix the problem. I suspect
that if it couldn't initially resolve it then it gives up totally.
So what is the fix. Here are some of my options:
1. Don't use DNS but just use the IP Address instead. This will most
certainly resolve the issue but is it the best way? Something in the Hosts file
maybe?
2. Perform sip monitoring using the SIP Monitor script or Monit. If the SIP
URL is resolvable but the status is UNKNOWN then issue a module reload of
chan_sip
3. Something else
PS the SIP Monitor does not seem to work for me. It only sends me an email when
the system is rebooted.
Thanks all.
Regards
Michael Knill
------------------------------------------------------------------------------
Check out the vibrant tech community on one of the world's most
engaging tech sites, Slashdot.org! http://sdm.link/slashdot
_______________________________________________
Astlinux-users mailing list
Astlinux-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/astlinux-users
Donations to support AstLinux are graciously accepted via PayPal to
pay...@krisk.org.
