AudioCodes Mediant 4000 SBC User Manual page 962

CHAPTER 60 Configuration Parameters Reference
Parameter
'Enable Early Media'
early-media
[EnableEarlyMedia]
'Session Expires
Disconnect Time'
configure voip >
sip-definitions
settings > sess-
exp-disc-time
[SessionExpiresDisco
nnectTime]
[RemoveToTagInFailu
reResponse]
Via: SIP/2.0/UDP
10.33.4.126;branch=z9hG4bKac2127550866
Max-Forwards: 70
From:
<sip:401@10.33.4.126;user=phone>;tag=1c211355332
4
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,PR
ACK,REFER,INFO,SUBSCRIBE,UPDATE
User-Agent: Sip-Gateway-/7.20A.252.011
Reason: Q.850 ;cause=16 ;text="local"
Content-Length: 0
Global parameter enabling the Early Media feature for sending media
(e.g., ringing) before the call is established.
You can also configure this feature per specific calls, using IP
Profiles (IpProfile_EnableEarlyMedia). For a detailed description of
the parameter and for configuring the feature, see
Profiles.
Note: If the feature is configured for a specific profile, the settings of
the global parameter is ignored for calls associated with the profile.
Defines a session expiry timeout.
The new session expiry timeout is calculated by subtracting the
configured value from the original timeout as specified in the
Session-Expires header. However, the new timeout must be greater
than or equal to one-third (1/3) of the Session-Expires value. If the
refresher does not send a refresh request within the new timeout, the
device disconnects the session (i.e., sends a SIP BYE).
For example, if you configure the parameter to 32 seconds and the
Session-Expires value is 180 seconds, the session timeout occurs
148 seconds (i.e., 180 minus 32) after the last session refresh. If the
Session-Expires header value is 90 seconds, the timeout occurs 60
seconds after the last refresh. This is because 90 minus 32 is 58
seconds, which is less than one third of the Session-Expires value
(i.e., 60/3 is 30, and 90 minus 30 is 60).
The valid range is 0 to 32 (in seconds). The default is 32.
Determines whether the device removes the 'to' header tag from
final SIP failure responses to INVITE transactions.
■ [0] = (Default) Do not remove tag.
■ [1] = Remove tag.
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Mediant 4000 SBC | User's Manual
Description
Configuring IP