[SR-Users] handling rejected REFER messages

[Jaime Gajardo]

Actually we have installed kamailio 5.4.2 and rtpengine like load balancer
in a NAT environment. behind the nat we have 2 identical nodes using REFER
for transfer
call to another destiny. On the other NAt side we have our public carrier.
When some node sends to kamailio the REFER message and kamailio reroutes
this message to the carrier. The call is rejected due company policies.

We want to know how we can convert or modify the REFER message into INVITE
for finally transfer the call.


kamailio -v:
version: kamailio 5.4.2 (x86_64/linux) 4fdc21
flags: USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, USE_RAW_SOCKS, DISABLE_NAGLE,
USE_MCAST, DNS_IP_HACK, SHM_MMAP, PKG_MALLOC, Q_MALLOC, F_MALLOC,
TLSF_MALLOC, DBG_SR_MEMORY, USE_FUTEX, FAST_LOCK-ADAPTIVE_WAIT,
USE_DNS_CACHE, USE_DNS_FAILOVER, USE_NAPTR, USE_DST_BLACKLIST,
HAVE_RESOLV_RES
ADAPTIVE_WAIT_LOOPS 1024, MAX_RECV_BUFFER_SIZE 262144, MAX_URI_SIZE 1024,
BUF_SIZE 65535, DEFAULT PKG_SIZE 8MB
poll method support: poll, epoll_lt, epoll_et, sigio_rt, select.
id: 4fdc21
compiled on 20:43:45 Dec  1 2020 with unknown

Uname -a:
Linux proxy 4.15.0-124-generic #127-Ubuntu SMP Fri Nov 6 10:54:43 UTC 2020
x86_64 x86_64 x86_64 GNU/Linux

rtpengine -v:
Version: 9.2.0.0+0~mr9.2.0.0 git-master-aa5e0244
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