AudioCodes Mediant 800B MSBR User Manual page 823

Mediant 800B MSBR
Parameter
Web/EMS: PRACK Mode
CLI: prack-mode
[PrackMode]
Web/EMS: Enable Early
Media
CLI: early-media
[EnableEarlyMedia]
Version 6.8
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.6.80A.227.005
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 311.
Notes:

If this functionality is configured for a specific IP Profile, the settings
of this global parameter is ignored for calls associated with the IP
Profile.
823
67. Configuration Parameters Reference
Description
314 or in the Tel Profile
Mediant 800B MSBR