Administrator’s Guide for SIP-T4X IP Phones
88
2.
Select the desired value from the pull-down list of Use Outbound Proxy in Dialog.
3.
Click Confirm to accept the change.
SIP session timers T1, T2 and T4 are SIP transaction layer timers defined in RFC 3261.
Timer T1 is an estimate of the Round Trip Time (RTT) of transactions between a SIP client
and SIP server. Timer T2 represents the maximum retransmitting time of any SIP request
message. The re-transmitting and doubling of T1 will continue until the retransmitting
time reaches the T2 value. Timer T4 represents the time the network will take to clear
messages between the SIP client and server. These session timers are configurable on IP
phones.
Procedure
SIP session timer can be configured using the configuration files or locally.
Configuration File
<MAC>.cfg
Configure SIP session timer.
For more information, refer to
SIP
Session Timer
on page
291
.
Local
Web User Interface
Configure SIP session timer.
Navigate to:
http://<phoneIPAddress>/servlet
?p=account-adv&q=load&acc=
0
Summary of Contents for SIP-T4X
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