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Hi all,

I am running the latest version 2.1.0 (build 1543).

I changed the IP address of the Operator installation on our VM yesterday due to changing our router and IP address range.

After this, I have been seeing errors in the SIP Debug log (pasted below).

So far, I can only see one significant issue with the system - after exactly 9m :58s during a call in progress, the audio drops out to complete silence in both directions; the call remains connected.

I can't see any other functional issues, but the below is the only recurring error I've noticed so far:

[10/Apr/2013 00:04:46] {sip} asterisk[1326]: VERBOSE[1347]: chan_sip.c:25679 in handle_request_do: --- (6 headers 0 lines) ---
[10/Apr/2013 00:04:46] {sip} asterisk[1326]: VERBOSE[1347]: chan_sip.c:15621 in get_destination: Looking for watchdog in sip-locals (domain operator)
[10/Apr/2013 00:04:46] {sip} asterisk[1326]: VERBOSE[1347]: chan_sip.c:4239 in send_response: #012<--- Transmitting (NAT) to --->#012SIP/2.0 404 Not Found#015#012Via: SIP/2.0;received=;rport=49700#015#012From: <sip:watchdog@operator>;tag=55a66b#015#012To: <sip:watchdog@operator>;tag=as3b9a50b2#015#012Call-ID: watchdog@operator#015#012CSeq: 3985 OPTIONS#015#012Server: Asterisk PBX#015#012Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH#015#012Supported: replaces, timer#015#012Accept: application/sdp#015#012Content-Length: 0#015#012#015#012#012<------------>
[10/Apr/2013 00:04:46] {sip} asterisk[1326]: VERBOSE[1347]: chan_sip.c:3999 in sip_scheddestroy: Scheduling destruction of SIP dialog 'watchdog@operator' in 32000 ms (Method: OPTIONS)
[10/Apr/2013 00:04:56] {sip} asterisk[1326]: VERBOSE[1347]: chan_sip.c:25669 in handle_request_do: #012<--- SIP read from UDP: --->#012OPTIONS sip:watchdog<_at_>operator SIP/2.0#012Via: SIP/2.0 <sip:watchdog@operator>;tag=55a66b#012To: <sip:watchdog@operator>#012Call-ID: watchdog@operator#012CSeq: 3986 OPTIONS#012#012<------------->
[10/Apr/2013 00:04:56] {sip} asterisk[1326]: VERBOSE[1347]: chan_sip.c:25679 in handle_request_do: --- (6 headers 0 lines) ---

Some background:

I have checked firewall settings extensively; the new router is a Cisco 547w and I've disabled SPI Firewall, forwarded all ports (5060-5061 on TCP and UDP and the higher UDP ports), and configured QoS.

[Updated on: Wed, 10 April 2013 02:16]


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Hi all,

I have had a successful, but probably unhelpful outcome - I completely scrapped our Operator VM and installed it from scratch - now it's working perfectly...

Filip Jenicek (Kerio)

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the error mentioned above appears in the log every 10 seconds. It's an asterisk watchdog which tries to register a nonexistent extension every 10 seconds and restart asterisk in case it doesn't respond within a minute. It is safe to ignore it.

Regarding dropouts, the best way to debug them is to create a packet dump (screen "Network" => "Packet Sniffer"). You can analyze it later in Wireshark.

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