31 May
2017
31 May
'17
5:31 p.m.
Hi
I'm looking to check if what I'm trying to configure is feasible .
UA -> WAN(X.X.X.X) -> Kamailio(LAN 192.X.X.148) -> internal PBX(LAN
192.X.X.131)
I have a WN IP forwarded to and internal Kamailio server which is sitting in
front of an asterisk server. SIP requests are sent to asterisk from Kamailio
via dispatcher .
SIP client can register via WAN and Kamailio to asterisk , I have rtpenine
configured as below.
/usr/sbin/rtpengine --interface=192.X.X.148!X.X.X.X --listen-ng=7722
--timeout=60 --silent-timeout=3600
--pidfile=/var/run/ngcp-rtpengine-daemon.pid --table=0 --log-level=6
--log-facility=local7 --log-facility-rtcp=local7 --homer=192.168.200.5:9060
--homer-protocol=udp --homer-id=2002
But SIP SDP when sent to asterisk is still show the WAN IP of the Sip client
in the SDP offer that goes to asterisk , ive tried adding parameter
"via-branch=" and "auto-bridge" to rtpengine_offer but they don't
seem to
make a difference , is there anyone way I can force the SDP offer that goes
to the backend PBX to use the IP of Kamailio server that rtpengine is
running on rather that the WAN IP that I'm advertising(X.X.X.X) ?
Example SIP SDP from WAN client to asterisk
INVITE sip:*97@sip.domain.com;transport=UDP SIP/2.0
Via: SIP/2.0/UDP
Client-IP:29345;branch=z9hG4bK-524287-1---e38082af1f110ad1;rport
Max-Forwards: 70
Contact: <sip:21@Client-IP:29345;transport=UDP> To:
<sip:*97@sip.domain.com;transport=UDP>
From: <sip:21@sip.domain.com;transport=UDP>;tag=e637343b
Call-ID: jvqeIB9f48_OGcTq0UxP7w..
CSeq: 2 INVITE Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, MESSAGE,
OPTIONS, INFO, SUBSCRIBE
Content-Type: application/sdp
User-Agent: Zoiper rv2.8.40
o=Z
0 0 IN IP4 Client-IP
s=Z
c=IN IP4 Client-IP
t=0 0
m=audio 29344 RTP/AVP 8 0 101
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-16
a=sendrecv
and SDP that Kamailio sends to asterisk
INVITE sip:*97@sip.domain.com;transport=UDP SIP/2.0
Record-Route: <sip:192.X.X.148;lr>
Via: SIP/2.0/UDP
192.X.X.148;branch=z9hG4bKd924.bcc4248735b53e9cf783c87c81dfee28.0
Via: SIP/2.0/UDP
Client-IP:29345;received=Client-IP;branch=z9hG4bK-524287-1---e38082af1f110ad
1;rport=29345 Max-Forwards: 69
Contact: <sip:21@Client-IP:29345;transport=UDP> To:
<sip:*97@sip.domain.com;transport=UDP>
From: <sip:21@sip.domain.com;transport=UDP>;tag=e637343b
Call-ID: jvqeIB9f48_OGcTq0UxP7w..
CSeq: 2 INVITE Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, MESSAGE,
OPTIONS, INFO, SUBSCRIBE
Content-Type: application/sdp User-Agent: Zoiper rv2.8.40
Path: <sip:192.X.X.148;lr;received=sip:Client-IP:29345>
v=0
o=Z 0 0 IN IP4 Client-IP
s=Z c=IN IP4 X.X.X.X
t=0 0
m=audio 32550 RTP/AVP 8 0 101
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-16
a=sendrecv
a=rtcp:32551
a=ice-ufrag:Dwd23Dem
a=ice-pwd:9Itp6Cq7lkYJxMkeDeA1I2kkzw
a=candidate:KZyzUR5lXJJpt1Et 1 UDP 2130706431 X.X.X.X 32550 typ host
a=candidate:KZyzUR5lXJJpt1Et 2 UDP 2130706430 X.X.X.X 32551 typ host
Gerry Kernan
Infinity IT | 17 The Mall | Beacon Court | Sandyford |
Dublin D18 E3C8 | Ireland
Tel: +353 - (0)1 - 293 0090 | E-Mail:
<mailto:gerry.kernan@infinityit.ie> gerry.kernan(a)infinityit.ie
Managed IT Services Infinity IT - <http://www.infinityit.ie/>
www.infinityit.ie
IP Telephony Asterisk Consulting -
<http://www.asteriskconsulting.com> www.asteriskconsulting.com
Contact Centre Total Interact -
<http://www.totalinteract.com> www.totalinteract.com
