See inline.
I need help to understand ser+rtpproxy.
How may I configure rtpproxy options to run with
ser/nathelper on the same box ?
rttproxy options :
usage: rtpproxy [-2fv] [-l addr1[/addr2]] [-6
addr1[/addr2]] [-s path] [-t tos] [-r rdir [-S sdir]]
Just start rtpproxy without options and it will listen on the standard
socket compiled into rtpproxy and nathelper.so.
SER communicated with RTPPROXY via unix socket.
Does RTPPROXY rewrite INVITE/REGISTER message with
info from SER?
Yes, when you call the appropriate functions. Read the Getting Started
document (chapter 1 + the rtpproxy example chapter) to get detailed info.
private-------FW+NAT------SER+RTPPROXY------ public
network network
which ports must be opened on FW box for INVITE and/or
REGISTER methods are they the same than on rtpproxy ?
If you have a firewall that denies all outgoing ports except those
explicitly opened (most home routers/FW allow outgoing):
SIP messages: udp (and TCP if you use that) port 5060
RTP: udp 35000-65000 (can be changed in rtpproxy's rttp_defines.h)
Both to your SER+RTPPROXY server.
g-)
g-)