Explain how registration retry works

[Yealink_Michael]

hi

here is the answer for your question

1. Server Expires: It configures the registration expiration time (in seconds) of SIP server for the account ,
Valid Value:
(Integer from 30 to 2147483647)
30<X<1200, 2/x to register
X>1200, X-600 to register

2. Server Retry Counts: It configures the retry times for the IP phone to resend requests when the SIP server is unavailable or there is no response from the SIP server for the account .
Valid Value:
(Integer from 0 to 20)

3. SIP Registration Retry Timer(0~1800s): It configures the interval (in seconds) for the IP phone to retry to re-register account when registration fails.
Valid Value:
(Integer from 0 to 1800)

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for your situation, you can try to decrease the value of Server Expires, after that the phone will send register to SIP server more frequently.