CallerID on forward

[Pratt]

Using Twilio as an Elastic SIP trunk
I have a DVR set up in 3cx, with an option to choose an extension.
That extension is set to foward to an external number, also a sip line

I have no caller id set on the extension, nor on the outbound rule
I am trying to get 3cx to pass the original caller id to the receiving external sip line, but it keeps rejecting it
I have tried every possible combination of callerid control on the trunk, including custom caller ids in all three options for editable segments

I have then tried capturing the packets and analyzing on wireshark and can see the sip headers
even when I have set custom fields in the header segments, I am seeing the user part: 10001@ which I assume is the 3cx call handler?

How can i get the user part to be a valid callerid so the call can be forwarded correctly, but using the callerid of the original caller?

 

[YiannisH_3CX]

Hello @Pratt

Twilio does not support Clip No Screening unless it's with a Refer header which 3CX does not support. There is no way to send the originator CallerID with Twilio at the moment..
Please revert the trunk settings the their default values to be sure nothing else will break.