AudioCodes Mediant 1000B User Manual page 774

Parameter
Web/EMS: PRACK Mode
CLI: prack-mode
[PrackMode]
Web/EMS: Enable Early
Media
CLI: early-media
[EnableEarlyMedia]
User's Manual

[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,PRAC
K,REFER,INFO,SUBSCRIBE,UPDATE
User-Agent: Sip-Gateway-/v.6.2A.008.006
Reason: Q.850 ;cause=16 ;text="local"
Content-Length: 0
Determines the 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.
Global parameter that enables the Early Media feature for sending
media (e.g., ringing) before the call is established. You can also
configure this functionality per specific calls, using IP Profiles
(IpProfile_EnableEarlyMedia) or Tel Profiles. For a detailed description
of this parameter and for configuring this functionality in the IP Profile
table, see ''Configuring IP Profiles'' on page
table, see Configuring Tel Profiles on page 299.
774
Mediant 1000B Gateway & SBC
Description
302 or in the Tel Profile
Document #: LTRT-27034