[SR-Users] MS Teams Direct routing with kamailio

[Karsten Horsmann]

Hello List,

i search for the right place in kamailio to manipulate the dispatcher
OPTIONS packets to add an Contact header.

For uac generated traffic i can use the event_route[tm:local-request] from
the tm module.
But how can i manipulate kamailio *self* generated OPTION pings from the
dispatcher?

OPTIONS request for MS Teams must contain the Contact header of such a
format:
Contact: <sip:SBC_FQDN:5061;transport=tls>

I follow this guide (for opensips) and try to adapt that step by step to
kamailio:

https://blog.opensips.org/2019/09/16/opensips-as-ms-teams-sbc/

CentOS 7 / kamailio 5.2.x (and maybe soon 5.3.x) / rtpengine
-- 
Cheers
*Karsten Horsmann*
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