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SIP Release Notes 88 Document #: LTRT-26901
CPE SIP Products
Parameter Description
QoS statistics in SIP
Release Call
[QoSStatistics]
Determines whether the device includes call quality of service (QoS)
statistics in SIP BYE and SIP 200 OK response to BYE, using the
proprietary SIP header, X-RTP-Stat.
[0] = Disable (default)
[1] = Enable
The X-RTP-Stat header provides the following statistics:
Number of received and sent voice packets
Number of received and sent voice octets
Received packet loss, jitter (in ms), and latency (in ms)
The X-RTP-Stat header contains the following fields:
PS=<voice packets sent>
OS=<voice octets sent>
PR=<voice packets received>
OR=<voice octets received>
PL=<receive packet loss>
JI=<jitter in ms>
LA=<latency in ms>
Below is an example of the X-RTP-Stat header in a SIP BYE
message:
BYE sip:302@10.33.4.125 SIP/2.0
Via: SIP/2.0/UDP 10.33.4.126;branch=z9hG4bKac2127550866
Max-Forwards: 70
From: <sip:401@10.33.4.126;user=phone>;tag=1c2113553324
To: <sip:302@company.com>;tag=1c991751121
Call-ID: 991750671245200001912@10.33.4.125
CSeq: 1 BYE
X-RTP-Stat:
PS=207;OS=49680;;PR=314;OR=50240;PL=0;JI=600;LA=40;
Supported: em,timer,replaces,path,resource-priority
Allow:
REGISTER,OPTIONS,INVITE,ACK,CANCEL,BYE,NOTIFY,PRACK,REF
ER,INFO,SUBSCRIBE,UPDATE
User-Agent: Sip-Gateway-/v.6.2A.008.006
Reason: Q.850 ;cause=16 ;text="local"
Content-Length: 0
RTP-Only Mode
RTP Only Mode
[RTPOnlyMode]
Enables the device to start sending and/or receiving RTP packets to
and from remote endpoints without the need to establish a SIP
session. The remote IP address is determined according to the
Outbound IP Routing table. The port is the same port as the local RTP
port (configured by the parameter BaseUDPPort and the channel on
which the call is received).
[0] Disable (default)
[1] Transmit & Receive = Send and receive RTP
[2] Transmit Only= Send RTP only
[3] Receive Only= Receive RTP only
Notes:
To configure the RTP Only mode per trunk, use the
RTPOnlyModeForTrunk_ID.
If per trunk configuration (using RTPOnlyModeForTrunk) is set to a