Yealink SIP-T2 SERIES Administrator's Manual page 587

―call-info‖ for call appearance state notification

―line-seize‖ for the IP phone to ask to seize the line

SCA supports the IP phones barging in an active call. In addition, SCA has the call pull
capability. Call pull feature allows users to retrieve an existing call from another shared
phone that is in active or public hold status.
If the call is placed on public hold, the held call is available for any shared party to
retrieve. If the call is placed on private hold, the held call is only available for the hold
party to retrieve. You need to configure either the private hold soft key or a private hold
key before you place the call on private hold.
Procedure
SCA can be configured using the configuration files or locally.
Configuration File
<MAC>.cfg
<y0000000000xx>.cfg
Configuring Advanced Features
Configure the registration line
type.
Parameters:
account.X.shared_line
Configure the call pull feature
access code.
Parameters:
account.X.shared_line_callpull_c
ode
Configure the private hold soft
key.
Parameters:
phone_setting.custom_softkey_e
nable
custom_softkey_talking.url
Assign a private hold key.
Parameters:
linekey.X.type/
expansion_module.X.key.Y.type
linekey.X.label/
expansion_module.X.key.Y.label
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