I've read your article about Kamailio as an SBC
and found uac module
description with uac_restore_from() and uac_restore_to(). It looks
like suitable for me, so I'll try to use it.
uac_restore_from() and uac_restore_to() works fine, but next I need to
modify ip address in SDP headers in responce - so it will be more
suitable to use SEMS or FreeSWITCH.
--
WBR,
Eugene Prokopiev