Solved Rewrite CID from 3CX when call forwarding

[pellisCMIT]

I'm struggling to get this working, it seems so trivial but I'm also seeing numerous locations to adjust CID.
We currently have all calls using our primary number on our SIP Trunk with Flowroute.
We have some salespeople with specific DIDs on their extensions and that works fine.
We have an answering service to forward to and the intention is to take an incoming call and send it back out to the calling service with the CID of the line that answered the call or even some other CID in our system reserved for this.
I have the call answers on an AA (mainly to filter out robocalls) then forwarded to a system extension that is set with a schedule to always forward to the caller service (currently set to my cell number for testing) but the originating CID always comes through.

While searching I've seen a lot of old posts of the opposite problem, people wanting the CID to flow through, but I'm actually wanting the opposite without impacting the way our CID works overall.
I'm hoping someone with more experience can explain the best practice for something like this. We're on hosted 3CX if that matters at all.

Thanks,
Phil

 

[leejor]

You might want to read through this...

Thread 'Caller ID displayed during Call Forwarding'

May 1, 2021

Hi,

We have a requirement that when the call is forwarded, the caller ID displayed to the forwarded callee should show the DID of the extension.

Below is the configuration :

a. under Extension, the Outbound Caller ID is configured.

b. under SIP Trunk -> Outbound Parameters, the configuration is as below. This is to show the outbound caller ID of the extension.


c. For Call Forwarding, after 20 secs if no answer, forward to an external mobile phone

During call forwarding, instead of displaying the outbound caller ID of the extension, the number of the external caller is...

• Kwang Mien
• Replies: 13
• Forum: Phone System / PBX

It is from a few years ago, so the behavior may have changed in the latest 3CX version, (but probably not).
The forwarded number sent can depend on the type of forwarding done.

 

[pellisCMIT]

Hey, thanks for the nudge, I finally found something that worked for me. Maybe a bit janky, but gets the job done. In that thread, someone had mentioned using an outbound rule as an arbitrary set of digits to prepend to the forward number and then just strip them off and set your CID number in the outbound rule, that did work properly!

My outbound rule is at the top of the list for a 15 digit length and prefix of 5430, set to strip the first 4 digits before sending to trunk. The number I'm wanting to appear is set in the outbound rule.
My extension for this is set to forward to External number 5430{number I want to dial}

 

[leejor]

Glad you were able to get something that worked for you.