Yealink SIP-T23, Provisioning Manual

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Yealink IP Phones Auto Provisioning Guide
100
Parameter
Permitted
Values
Descriptions Web Setting Path
256 characters in the SIP server address.
The default value is blank.
sip.limit_server_reason
String within
256 characters
It configures the string returned as the reason
of the register failure due to misconfiguration
of the SIP server (not contains the string
configured by the parameter
“sip.limit_server_name”).
The default value is blank.
sip.escape_characters.enable 0 or 1
It enables or disables the IP phone to convert
ASCII characters.
0-Disabled
1-Enabled
The default value is 0.
sip.listen_mode 0, 1or 2
It configures the listening mode.
0-according to the transport protocol
1-listening TCP and UDP
2-listening TCP and UDP, and subscribe for BLF
List containing transport=TCP in the contact
header.
The default value is 0.