Inbound calls routing incorrectly

[Alphabetic]

18 U5 Build 418
Debian 10 Hosted

Hello,

Last friday we changed our SIP settings in 3CX from the IP to a hostname.

Since doing this, we've found that if we have any other SIPs registered (for the purpose of dialing out to use a caller ID only), any inbound call will use this first and follow that routing despite having an inbound rule set to go to the correct place.

The solution is to delete the SIP used for dialling out and set the caller ID in the "main" SIP.

Why does this happen?

 

[Evolute IT]

Multiple trunks of the same provider? If so, that's why. The Call Source Identification could help but not if you have the same DIDs in multiple trunks.

 

[TheodorosG_3CX]

You may check below guideline where the call source identification is explained:
• https://www.3cx.com/docs/sip-trunk-inbound-calls/

 

[Alphabetic]

You may check below guideline where the call source identification is explained:
• https://www.3cx.com/docs/sip-trunk-inbound-calls/

Is this something that has just been implimented?

We had these trunks in place for years.

only difference was that last friday we changed the server of the SIP from IP to hostname.

 

[TheodorosG_3CX]

Are you using a 3CX Supported Provider?

 

[Alphabetic]

Are you using a 3CX Supported Provider?

Yes its BT Trunk

 

[TheodorosG_3CX]

Which one of the 2 templates are you using?

 

[Alphabetic]

Its the BT WSIPT

 

[TheodorosG_3CX]

This template is for the ip based sip trunk, do you use this template for a registration based sip trunk?

 

[Alphabetic]

This template is for the ip based sip trunk, do you use this template for a registration based sip trunk?

The SIP is IP based registered only that we use.

 

[TheodorosG_3CX]

I would suggest that the configuration of the Sip Trunk follows the guidelines: https://www.3cx.com/docs/bt-wsipt-uk-sip-trunk/
There many facts that depends on the Provider and 3CX and this is how the template is provided. Since the interop tests requires to use an ip address you need to follow this.