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asterisk / SIP calls dropping

Posted on 2014-07-13
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Last Modified: 2014-11-12
Hi I have an issue where my calls in Asterisk will just drop randomly after a random amount of time,  asterisk seems to have a hissy fit and then the call just crashes out.  I have turn on advanced logging (Verbosity 5 Debug 5 SIP Debug on) and have attached a cut down version of the logs,  wondering if anyone could make any sense of them (Logs are just the tail of when twice this issue happened)
terry120714-droppedwithComperSMALL.txt
terry120714-droppedwithArielSMALL.txt
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Question by:ncomper
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by:Phonebuff
ID: 40193426
Back up please --  Asterisk what, 1.4 or 11,  on what OS and through a Firewall ?  

We need a few details before looking at log files --
---
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by:ncomper
ID: 40195399
Hi sorry this is hosted on the Amazon AWS cloud using their Firewall using NAT.  I.e Default external IP address and an internal IP address. The Version is "Asterisk (Ver. 1.8.20.1)".  Im a little lost seems that people find it tough to read these logs :(.   Its running on the default Freepbx instance of Ubuntu which I believe is 10.0.4
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Phonebuff earned 1000 total points
ID: 40197659
I would start by talking with your provider and see what this series of messages is all about --  Way to many of them is the short log

<--- SIP read from UDP:193.104.103.6:5060 --->
SIP/2.0 401 Unauthorized
Via: SIP/2.0/UDP 54.72.144.181;received=54.72.144.181;branch=z9hG4bK76a29781;rport=5060
From: <sip:IPT-442035882580@sipgw3.orbtalk.co.uk>;tag=as3604d0b8
To: <sip:IPT-442035882580@sipgw3.orbtalk.co.uk>
CSeq: 163 REGISTER
Call-ID: 4785356a0d89474560bc2d29285711ff@127.0.1.1
WWW-Authenticate: Digest realm="orbtalk.co.uk", nonce="c8a5a79899c0695e85d5e1120f9bc995", algorithm=MD5, opaque="1759901906"
Content-Length: 0
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Author Closing Comment

by:ncomper
ID: 40238032
This did not 100% solve it but lead me down the right path
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