Version 6.2 699 February 2011
SIP User's Manual 12. Configuration Parameters Reference
Parameter Description
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
,REFER,INFO,SUBSCRIBE,UPDATE
User-Agent: Sip-Gateway-/v.6.2A.008.006
Reason: Q.850 ;cause=16 ;text="local"
Content-Length: 0
Web/EMS: PRACK Mode
[PrackMode]
PRACK (Provisional Acknowledgment) mechanism mode for SIP 1xx
reliable responses.
[0] Disable
[1] Supported (default)
[2] Required
Notes:
The Supported and Required headers contain the '100rel' tag.
The device sends PRACK messages if 180/183 responses are
received with '100rel' in the Supported or Required headers.
Web/EMS: Enable Early
Media
[EnableEarlyMedia]
Enables the device to send a 183 Session Progress response with SDP
instead of a 180 Ringing, allowing the media stream to be established
prior to the answering of the call.
[0] Disable = Early Media is disabled (default).
[1] Enable = Enables Early Media.
For Analog interfaces: Note that to send a 183 response, you must also
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