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<p>Hello,</p>
<p>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.</p>
<p>Cheers,<br>
Daniel<br>
</p>
<div class="moz-cite-prefix">On 12.01.21 21:20, Jaime Gajardo wrote:<br>
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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 <br>
call to another destiny. On the other NAt side we have our
public carrier. <br>
When some node sends to kamailio the REFER message and
kamailio reroutes this message to the carrier. The call is
rejected due company policies.<br>
<br>
We want to know how we can convert or modify the REFER
message into INVITE for finally transfer the call.<br>
<br>
<br>
kamailio -v:<br>
version: kamailio 5.4.2 (x86_64/linux) 4fdc21<br>
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<br>
ADAPTIVE_WAIT_LOOPS 1024, MAX_RECV_BUFFER_SIZE 262144,
MAX_URI_SIZE 1024, BUF_SIZE 65535, DEFAULT PKG_SIZE 8MB<br>
poll method support: poll, epoll_lt, epoll_et, sigio_rt,
select.<br>
id: 4fdc21 <br>
compiled on 20:43:45 Dec 1 2020 with unknown<br>
<br>
Uname -a:<br>
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<br>
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<pre class="moz-quote-pre" wrap="">_______________________________________________
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<pre class="moz-signature" cols="72">--
Daniel-Constantin Mierla -- <a class="moz-txt-link-abbreviated" href="http://www.asipto.com">www.asipto.com</a>
<a class="moz-txt-link-abbreviated" href="http://www.twitter.com/miconda">www.twitter.com/miconda</a> -- <a class="moz-txt-link-abbreviated" href="http://www.linkedin.com/in/miconda">www.linkedin.com/in/miconda</a>
Funding: <a class="moz-txt-link-freetext" href="https://www.paypal.me/dcmierla">https://www.paypal.me/dcmierla</a></pre>
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