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Asterisk unable to register to external SIP provider

I've been trying to get my head around this.

Just noticed today that my SIP trunk isn't registreing at the provider.

The Asterisk log only shows timeouts, and I can't see anything in the logs on Sophos.

[2017-10-08 21:25:33] NOTICE[2462] chan_sip.c: -- Registration for 'xxxxxxxx@sip.viptel.dk' timed out, trying again (Attempt #4)
[2017-10-08 21:25:33] NOTICE[2462] chan_sip.c: -- Registration for 'yyyyyyyy@sip.viptel.dk' timed out, trying again (Attempt #4)
[2017-10-08 21:25:53] NOTICE[2462] chan_sip.c: -- Registration for 'xxxxxxxx@sip.viptel.dk' timed out, trying again (Attempt #5)
[2017-10-08 21:25:53] NOTICE[2462] chan_sip.c: -- Registration for 'yyyyyyyy@sip.viptel.dk' timed out, trying again (Attempt #5)

The SIP module is loaded on Sophos (tried unloading it which changed absolutely nothing)

Any ideas to test?



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  • I see nothing in the logs that indicate anything have been blocked from Asterisk.

    And the server that is running Asterisk is hit by a firewall (above normal LAN-to-WAN rule) that disables IPS, APS and web filter for clientless servers.

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