Yealink W52P IP DECT Phones Configuring Guide
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Example:
The user registers a SIP account for the IP phone and then set the value of Timer T1,
Timer T2 respectively (Timer T1: 0.5, Timer T2: 4). The SIP registration request message
will be re-transmitted between the IP phone and SIP server. The re-transmitting and
doubling of Timer T1 (0.5) will continue until the retransmitting time reaches the Timer T2
(4). The total registration request retry time will be less than 64 times of T1 (64 * 0.5 = 32).
The re-transmitting interval in sequence is: 0.5s, 1s, 2s, 4s, 4s, 4s, 4s, 4s, 4s and 4s.
Timer T4
Timer T4 represents the time the network will take to clear messages between the SIP
client and server.
To configure SIP session timer via CommPortal phone configurator:
1. Click on Line X-> Session Timer.
2. Enter the desired value in the SIP Session Timer T1 field.
The valid value is 0.5-10s, and the default value is 0.5s.
3. Enter the desired value in the SIP Session Timer T2 field.
The valid value is 2-40s, and the default value is 4s.
4. Enter the desired value in the SIP Session Timer T4 field.
The valid value is 2.5-60s, and the default value is 5s.
5. Click Save changes to accept the change.
6. Perform auto provisioning on the phone to download above configurations. For
more information on how to perform auto provisioning, refer to Downloading
Configuration Files on page 17.
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