Problem with sip trunk and remote phones since friday

[hsanchez]

Help need !!!

Since las friday I'm having problems registering the sip trunks and ip phones. The PBX has been working fine for more than six months.

Called the sip provider, no changes there
Full backup and reinstall from 0, debian 9
Ping works to sip trunk ip
Delete the trunk a created it again.

The system is in a cloud server with public ip, no additional firewal. All the sip phones are remote, no one registering. Android app works.

Having the same problem with 2 installs.

I think it may be the version, I upgraded to 16.0.5.612 last week.

Anybody else with the same problem?
Is there any way to revert to the previous version?

Please help

This is the registration log:

05/07/2020 11:06:17 AM - Sent registration forLc:10000(@CMW Syscom880[<sip:[email protected]:0/UDP>]) :ClientReg Send Req REGISTER from 0.0.0.0:0 tid=3e277128148eab05 Call-ID=eslPqnPuOSRXMwvNpaSreQ..: REGISTER sipbx.1900internacional.com SIP/2.0 Via: SIP/2.0/ ;branch=z9hG4bK-524287-1---3e277128148eab05;rport Max-Forwards: 70 Contact: <sip:[email protected]:5060;rinstance=dea42edce33d8542> To: "40000880"<sip:[email protected]> From: "40000880"<sip:[email protected]>;tag=46ed393f Call-ID: eslPqnPuOSRXMwvNpaSreQ.. CSeq: 1 REGISTER Expires: 600 Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REGISTER, SUBSCRIBE, NOTIFY, REFER, INFO, MESSAGE, UPDATE Supported: replaces, timer Content-Length: 0

 

[innotip]

Hi,

- is it a supported SIP trunk ?
- is your firewall check all green ?

 

[hsanchez]

Sip trunk not supported, but has been configured and working for 6 months, firewall check shows some ports with the full cone nat in red but it has been always that way and it was working fine.

The server has a public ip, no other firewall that the iptables rules that 3cx install sets up.

 

[innotip]

I would double check sip trunk parameters with sip providers, and ask if they work well with 3CX. That's why there are some "supported" sip trunks, they make sure parameters are ok and fixed as should be. Could definitely work during years and because of some changes, stops working.

 

[hsanchez]

Already did, they provide a guide to configure a 3cx trunk, yesterday they asked me for screen shots of my config an confirmed it was ok.

I think the problem is on the pbx side because sip phones also stopped working. Only Android app is working, but that work with the tunnel, not directly with sip

 

[innotip]

If you have a proper backup, just restart from scratch, would be very fast and maybe good solution

 

[hsanchez]

moving to vultr right now, I'm going to restore the full backup there.

 

[hsanchez]

In Vultr the sip phones registered and the sip trunk too. I'm opening a support ticket with the other cloud server provider, it is weird that with a public ip and no firewall we have these problems.

Thank you for the help !!!

 

[JohnS_3CX]

Hi

The remote phones have a list of prerequisites to check (even if they worked before - don't rely on that alone).

Where they STUN phones or SBC?