[SR-Users] handling rejected REFER messages

[Daniel-Constantin Mierla]

Hello,

converting a REFER to an INVITE and sending out is not going to solve
anything. The REFER is to trigger a different call to another target,
while the invite is to renegotiate the session (eventually with a
replace indication). If the endpoints do not support REFER, then you
need SIP application servers (b2bua) like Asterisk, FreeSwich or SEMS to
handle it and initiate new calls.

Cheers,
Daniel

On 12.01.21 21:20, Jaime Gajardo wrote:
> 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
>
>
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-- 
Daniel-Constantin Mierla -- www.asipto.com
www.twitter.com/miconda -- www.linkedin.com/in/miconda
Funding: https://www.paypal.me/dcmierla

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