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Yealink T21PE2 - Page 215

Yealink T21PE2
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Account Settings
209
Default 1
Parameter
account.X.sip_server.Y.expires
[1][2]
<MAC>.cfg
Description
It configures the registration expiration time (in seconds) of SIP server Y.
Example:
account.1.sip_server.1.expires = 3600
Permitted
Values
Integer from 30 to 2147483647
Default 3600
Web UI Account->Register->SIP Server Y->Server Expires
Parameter
account.X.sip_server.Y.retry_counts
[1][2]
<MAC>.cfg
Description
It configures the retry times for the IP phone to resend requests when the SIP server Y is unavailable or
there is no response from the SIP server Y.
Example:
account.1.sip_server.1.retry_counts= 3
The IP phone moves to the next available server after three failed attempts.
Permitted
Values
Integer from 0 to 20
Default 3
Web UI Account->Register->SIP Server Y->Server Retry Counts
Parameter
account.X.sip_server.Y.only_signal_with_registered
[1][2]
<MAC>.cfg
Description
It enables or disables the IP phone to only send requests to the registered server when encountering a fail-
over.
Note: It works only if account.X.sip_server.Y.register_on_enable” is set to 1 (Enabled) and account.X.sip_
server.Y.failback_mode is set to 1, 2 or 3.
Permitted
Values
0-Disabled
1-Enabled
Default 0
Parameter
account.X.sip_server.Y.invite_retry_counts
[1][2]
<MAC>.cfg
Description
It configures the number of retries attempted before sending requests to the next available server when
encountering a failover.
Permitted
Values
Integer from 1 to 10
Default 3
Parameter
account.X.sip_server.Y.failback_mode
[1][2]
<MAC>.cfg
Description
It configures the mode for the IP phone to retry the primary server in failover.
Note: It works only if account.X.sip_server.Y.address” is set to the domain name of the SIP server.
Permitted
Values
0-newRequests: all requests are sent to the primary server first, regardless of the last server that was used.
1-DNSTTL: the IP phone will send requests to the last registered server first. If the time defined by DNSTTL

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