remote phones suddently no audio

[evp]

Hi I have a system that has been up and running for over 1 year. Suddenly my remote phones no longer have audio either way. I noticed that the ip of the remote phones is showing up as my firewall lan inerface ip (my pbx gateway), and not the actual remote ip address.

here is a copy of tcpdump for one of the remote extensions (xxx used to hide some detail):

05:24:04.294045 IP (tos 0x60, ttl 64, id 735, offset 0, flags [none], proto: UDP (17), length: 543) 10.10.11.118.sip > 10.10.11.1.20174: SIP, length: 515
OPTIONS sip:[email protected]:20174 SIP/2.0
Via: SIP/2.0/UDP 10.10.11.118:5060;branch=z9hG4bK17321131;rport
From: "Unknown" <sip:[email protected]>;tag=as6b85bed9
To: <sip:[email protected]:20174>
Contact: <sip:[email protected]>
Call-ID: [email protected]
CSeq: 102 OPTIONS
User-Agent: FPBX-2.8.1(1.4.21.2)
Max-Forwards: 70
Date: Thu, 03 Mar 2011 05:24:04 GMT
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY
Supported: replaces
Content-Length: 0

Lan gateway 10.10.11.1
pbx lan ip 10.10.11.118
remote phone ip XX.136.122.4

Any help would be really appreciated.

Thanks

 

[jmullinix]

This could be a NAT problem. Did you change anything on the PBX or the firewall right before this started to happen?

 

[evp]

I just updated pbxiaf. I am noticing that 2 of my remotes are showing the same problem, one however is showing with the correct remote ip address.

 

[jmullinix]

What did you update to and what was the original Asterisk version?

 

[ghurty]

If your ip address changed and you have settings in \etc\asterisk\sip_custom.conf then that will happen. Also if those settings got erased, depending on your setup then you would only have one way audio on remote extensions.