Try DialPlan rule like this. [Matching Patterns] $request = ^REGISTER $addrtype = 6 $param(Via,"received") = \[(.+)\] $removeparam(Via,"received") = (.+) [Deploy Patterns] Via = %2;received=%1 $continue = true Hello. A bit more on topic. Brackets in "received" param also live in status messages ...

It just works. Thanks a lot.

1. Brekeke Product Name and Version: 3.14.3.5/560 2. Java version: OpenJDK 64-Bit Server VM 11.0.20 3. OS type and the version: Ubuntu Linux OS verion 5.4.0-163-generic OS architecture amd64 4. UA (phone), gateway or other hardware/software involved: TG2492 cable modem 5. Your problem: During ...