Yes, this is possible. See the questions that deal with msg_apply_changes():

https://www.kamailio.org/wiki/tutorials/faq/main

— Sent from mobile, with due apologies for brevity and errors.

On Feb 7, 2021, at 9:37 AM, alirsm alirsm@protonmail.com wrote:

 Hi,

Call to a number forwarded to a FAX by using two Kamailio proxies.

(INVITE) --> KamailioA --> GW1 --> KamailioB --> GW2 --> FAX FAX --> (RE-INVITE) --> GW2 --> KamailioB --> (TO Header being corrupted)

KamailioB is corrupting TO header when receiving RE-INVITE and causing the call to fail.

1. Only one "uac_replace_from()" is being used in each Kamailio.
2. GW1 is adding +1 (using E164 format) to URI and FROM headers.

I was wondering if any of the above might cause the TO header corruption.

Any help would be appreciated. AL

---

Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users