Examples: RTPEngine

RTPEngine

The Sipwise NGCP rtpengine is a proxy for RTP traffic and other UDP based media traffic. It's meant to be used with the Kamailio SIP proxy and OpenSIPS SIP proxy and forms a drop-in replacement for any of the other available RTP and media proxies.

RTPEngine supports HEP3 Encapsulation and can mirror RTCP packets relayed between streams to HOMER complete with SIP correlation Call-IDs from the respective signaling session.

Parameters

 --homer=IP46:PORT           Address of Homer server for RTCP stats
 --homer-protocol=udp|tcp    Transport protocol for Homer (must be defined)
 --homer-id=INT              'Capture ID' to use within the HEP protocol

Setup

Configure RTPEngine to send RTCP reports to Homer using the same HEP settings you used in your Kamailio/OpenSIPS/Captagent configuration to achieve SIP session correlation:

Example HEP Settings

 --homer=10.0.0.20:9060 
 --homer-protocol=udp  
 --homer-id=999

/usr/sbin/rtpengine --interface=10.0.0.1 --listen-tcp=25060 \
--listen-udp=12222 --listen-ng=22222 --listen-cli=9900 --timeout=60 \
--silent-timeout=3600 --pidfile=/var/run/ngcp-rtpengine-daemon.pid \
--table=0 --log-level=6 --log-facility=daemon --homer=10.0.0.20:9060 \
--homer-id=999 --homer-protocol=udp

Example RTCP Report

{"sender_information":
{"ntp_timestamp_sec":3667834977,"ntp_timestamp_usec":2355549043,
"octets":82240,"rtp_timestamp":84679,"packets":514},
"ssrc":3724882677,"type":200,"report_count":1,"report_blocks":
[{"source_ssrc":2062957521,"highest_seq_no":4663,"fraction_lost":0,
"ia_jitter":13,"packets_lost":0,"lsr":3093100159,"dlsr":296222}],
"sdes_ssrc":3724882677,"sdes_report_count":1,"sdes_information": [] }