Yealink SIP-T2 SERIES Administrator's Manual page 237

The number of the DSS keys associated with an account must meet the following:
Phone Model
SIP-T48G/S
SIP-T46G/S
SIP-T29G
SIP-T27P/G
SIP-T42G/T42S/T41P/T41S
SIP-T40P/T40G/T23P/T23G
SIP-T21(P) E2
SIP-T19(P) E2
The following shows two line keys associated with a registered account 101:
When you customize multiple line keys to be associated with an account, you can configure the
IP phone whether to transfer a call or set up a conference call using a new line key.
Procedure
Multiple line keys per account can be configured using the following methods.
Central Provisioning
(Configuration File)
Line Key
<=29
<=27
<=27
<=21
<=15
<=3
<=2
<y0000000000xx>.cfg
Configuring Basic Features
Ext Key (with expansion
modules connected)
<=240
<=240
<=228
<=228
/
Configure auto linekeys.
Parameter:
features.auto_linekeys.enable
Configure whether to transfer a call using
a new line key on a phone basis.
Parameter:
phone_setting.call_appearance.transfer_vi
a_new_linekey
Configure whether to set up a conference
call using a new line key on a phone basis.
/
/
/
/
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