All clients of course from Internet and behind Nat. Main problem is amount of traffic going through Kamailio and Asterisk. We need to pay for every additional GB behind limit in
tariff plan to hosting provider.
So we decided to try route all rtp traffic between users directly.
UserA ---sip--> Kamailio --> Asterisk --> UserB
\-rtp--> --> --> UserB
Is it possible at all? Maybe someone already did it …