Hi all,
I have Kamailio connected to PSTN gateway.
Sometimes gateway replies with "503 temporary unavailable". PSTN gateway
adds a "reason" header with ISUP code.
But according to RFC 3261 kamailio doesn't forward 503 replies
transparently. When 503 reply is received Kamailio replaces 503 with a
500 which is created from original request (build_res_buf_from_sip_req).
I have tried append_hf from textops module, but it's not working with a
locally generated replies.
How can i copy Reason header from 503 to 500 ?
I will appreciate your help with this situation.
Best regards,
Vitaliy Aleksandrov.
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