Preserve parameter in the From URI

1. Brekeke Product Name and Version:

Version 3.6.3.1, Pro

2. Java version:

1.7.0_171

3. OS type and the version:

CENTOS 6

4. UA (phone), gateway or other hardware/software involved:

5. Your problem:

I would like the PBX to preserve a parameter in the From uri.
For example:
Before PBX:
From: sip:123456@192.168.1.26;cd40rs=res
After PBX, I would like that cd40rs parameter is preserved.

Hi,

You may be able to retrieve the parameter from the "from" header by using ARS-IN or dialplan(To PBX), and add it to the "from" header with ARS-OUT or dialplan (from PBX).

For detail, I recommend to ask brekeke support.

thank you

I do not know how to do that you say. How can I save the from header in ARS-IN or dialplan(To PBX) and add it to the "from" header with ARS-OUT or dialplan (from PBX)?