PBXes (http://www1.pbxes.com/forum/index.php)
- English (http://www1.pbxes.com/forum/board.php?boardid=16)
-- Providers (http://www1.pbxes.com/forum/board.php?boardid=22)
--- RE: Betamax - SIP response 480 (http://www1.pbxes.com/forum/threadid.php?threadid=1220030901)

Posted by telagente01 on 29.08.2008 at 19:28:

traurig SIP response 480

Hi,
I am getting a lot of failed calls with either a SIP response 480 or no final SIP response at all in the log. PBXes plays the 'all circuits are busy' message for the SIP 480. I have checked that the dialled numbers are correct, and that the numbers answer when called from a mobile or landline.
I have changed the trunk provider from Voicetrading to Voipcheap but no difference.
Unfortunately I don't know when it started because it has only just been brought to my attention and the log only goes back a week. Possibly its been happening since 'go live'.
Any ideas ?

Posted by Diafora on 10.09.2008 at 14:51:

RE: SIP response 480

Is this message being heard when trying to place outgoing calls? If it is happening on every call or on every second or third call?

Let us know the FQDNs you are using in the "SIP server" field of your trunks.

Posted by telagente01 on 10.09.2008 at 23:23:

RE: Betamax - SIP response 480

Only outgoing calls, maybe 10% at most.
Using sip.voicetrading.com in sip server field.
Regards

Posted by Diafora on 10.09.2008 at 23:41:

RE: Betamax - SIP response 480

The sip.voicetrading.com FQDN resolves into two IPs:

;; ANSWER SECTION:
sip.voicetrading.com. 883 IN A 194.120.0.198
sip.voicetrading.com. 883 IN A 194.221.62.198

So one of them should be having an issue routing certain calls. Are the failed calls concentrated at certain times of the day?

Posted by telagente01 on 11.09.2008 at 00:08:

RE: Betamax - SIP response 480

Seem to come in clusters,
today:
4 between 9 and 10am
4 between 1 and 3pm
4 between 4 and 5pm

Outgoing calls are pretty evenly spread over the day

Update
This issue seems to have disappeared of its own accord, I assume related to the trunk rather than the PBX.
Regards
Ron

Posted by Diafora on 04.12.2008 at 00:25:

RE: Betamax - SIP response 480

Definitely a trunk related issue.

Posted by telagente01 on 04.12.2008 at 01:42:

RE: Betamax - SIP response 480

Everything motoring very smoothly now, and all other issues and queries are resolved.
Thanks for the help and support In these threads, hopefully they have helped others as well.
Regards
Ron

Powered by: Burning Board Lite 1.0.2 © 2001-2004 WoltLab GmbH
English translation by Satelk