Solved Inbound call fails: 5 trunks with different telephone numbers and one registrar

[Voipist]

I have 5 trunks with different telephone numbers at a provider. All trunks use the same registrar. I can only use the first trunk in the list. For all others, I get the infomation that the number is unreachable. In the 3CX call log, the destination is N / A. Can someone help here

 

[eddv123]

You have just said trunks. I am going to assume these are SIP trunks as you are using a registrar and not FXO/ISDN via a gateway?

Are you splitting these DID numbers into different trunks or using them all on the same trunk?

Have you confirmed with your provider that they are all live? You may have a console you can login to and check.

 

[YiannisH_3CX]

Hello @Voipist

Are you using a supported provider? If so then who? You may be experiencing source identification issues since all trunks have the same registrar and might need to enable source identification under inbound parameters of all trunks to get this working. You will need to enable both "Call source Identification" and the option "Use both "Source Identification" rules and "Caller Number/Name" field mappings (Note: Disables catch all routing capability)"

What you will use in the Call source Identification though depends on what the provider sends in his Invite message and what we can use to identify the call. The DID's need to be unique however.

 

[Voipist]

Hello @YiannisH_3CX


We configured following inbound parameters:

"Request Line URI: User Part" und "AuthID authenitication"

and we activated

"Use both "Source Identification" rules and "Caller Number/Name" field mappings (Note: Disables catch all routing capability)"

Now everything is fine .

Thank you for the help!!!

 

[YiannisH_3CX]

Glad to see the issue has been resolved.