Yealink SIP-T2 Series

Configuring Basic Features
401
180 Ring Workaround
180 ring workaround defines whether to deal with the 180 message received after the 183
message. When the caller receives a 183 message, it suppresses any local ringback tone and
begins to play the media received. 180 ring workaround allows IP phones to resume and play
the local ringback tone upon a subsequent 180 message received.
Procedure
180 ring workaround can be configured using the following methods.
Central Provisioning
(Configuration File)
<y0000000000xx>.cfg
Configure 180 ring workaround.
Parameter:
phone_setting.is_deal180
Web User Interface
Configure 180 ring workaround.
Navigate to:
http://<phoneIPAddress>/servlet?p
=features-general&q=load
Details of the Configuration Parameter:
Parameter
Permitted Values
Default
phone_setting.is_deal180
0 or 1
1
Description:
Enables or disables the IP phone to deal with the 180 SIP message received after the 183 SIP
message.
0-Disabled
1-Enabled
If it is set to 1 (Enabled), the IP phone will resume and play the local ringback tone upon a
subsequent 180 message received.
Web User Interface:
Features->General Information->180 Ring Workaround
Phone User Interface:
None