Unsupported SIP TRUNK - unsupported

[PiotrQQ]

Hello

I have problem with incoming connection from local provider on sip trunk.
In debug/pcap i see wrong VIA address in RINGING and TRYING.

masked:
A.A.A.A - is my address
B.B.B.B - is a provider address
10000 - CID

SIP/2.0 100 Trying
Via: SIP/2.0/UDP B.B.B.B:5280;branch=z9hG4bK9ker8l3058e5iqb58vl0.1 (Must be Via: SIP/2.0/UDP A.A.A.A:5060)
To: "XXXXXXX XXXXXXX"<sip:[email protected];rinstance=586a3866b8ce344c>
From: <sip:[email protected];user=phone>;tag=405867843-1663146281820-
Call-ID: [email protected]
CSeq: 496969135 INVITE
Content-Length: 0

SIP/2.0 180 Ringing
Via: SIP/2.0/UDP A.A.A.A:5060;branch=z9hG4bK9ker8l3058e5iqb58vl0.1 (Must be Via: SIP/2.0/UDP B.B.B.B:5060)
Contact: <sip:[email protected]:5060;transport=UDP>
To: "XXXXXXX XXXXXXX"<sip:[email protected];rinstance=586a3866b8ce344c>;tag=7c2b1a5f
From: <sip:[email protected];user=phone>;tag=405867843-1663146281820-
Call-ID: [email protected]
CSeq: 496969135 INVITE
User-Agent: 3CXPhoneSystem 18.0.4.965 (965)
Content-Length: 0

When i change option "Put Public IP in SIP VIA Header" from my public adress A.A.A.A to address provider B.B.B.B, all incoming connection working fine.
In my opinion VIA in 100 and 180 headers in version 3cx 18.0 (Build 965) have a wrong VIA variables.
On provider side, sip trunk gateway is running on Oracle SBC.
On asterisk platform all sip trunk connection working fine.

Thx for resposne and Help
Peter

 

[leejor]

Who is your provider?

 

[PiotrQQ]

Who is your provider?

Hello leejor, It is a large service provider in Poland. It is not on the list of supported provider.

 

[leejor]

The reason I asked is because if you say "I'm using a non-supported provider, and it's not working", you may not get a responce. If you mention who the provider is, someone else, that uses the same provider, might have some suggestions, because they may have had the same, or similar issues. It always helps to provide as much information as possible.

 

[N_G]

So you can not use this trunk with 3CX. You can contact the tech support of this provider if you like but your instance will be unsupported.