Yealink SIP-T2XP, Provisioning Manual

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Yealink IP Phones Auto provisioning Guide
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Parameter Permitted Values Descriptions Web Setting Path
The default value is 0.
It takes effect after a reboot.
sip.reg_surge_prevention = Integer from 0 to 60
It configures the maximum duration (in
seconds) for account register after startup.
The default value is 0.
It takes effect after a reboot.
Network-> Advanced-> Registration
Random-> Registration Random
(0~60s)
sip.send_response_by_request = 0 or 1
It configures from where the phone retrieves
the destination address for response. The
phone will then send all SIP response
messages to the destination address.
0-from VIA header in the request message
1-from source address of the request
message
The default value is 1.
It takes effect after a reboot.
sip.notify_reboot_enable = 0, 1or 2
It configures the phone behavior when
receiving a SIP NOTIFY message which
contains the header “Event: check-sync”.
0-The phone will reboot only if the SIP
NOTIFY message contains an additional
string “reboot=true”.