Yealink SIP-T2 Series Administrator's Manual page 168

Administrator's Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
It configures the pickup code.
Note: It is only applicable when "linekey.X.type" is set to 13, 14, 16, 24 or 39. It is not applicable to T19(P)
E2/CP920 IP phones.
For multicast paging:
0 to 31
Permitted
Values
For BLF/BLF list/intercom feature:
String within 256 characters
Default Blank
Web UI Dsskey->Line Key->Line KeyX->Extension
Menu->Features->DSS Keys->Line Key X->Channel or
Phone UI Menu->Features->DSS Keys->Line Key X->PIN/ID or
Menu->Features->DSS Keys->Line Key X->Extension
Parameter linekey.X.xml_phonebook
It specifies a specific group/phone book when multiple groups/phone books are configured on the IP
phone.
For example, both Remote Phone Book 1 "Sell" and Remote Phone Book 2 "Market" are configured on the
Description phone, you can configure "linekey.X.xml_phonebook = 0" to specify the Remote Phone Book 1 "Sell" for
the specific line key. The user can press this line key to access the Remote Phone Book 1 "Sell".
Note: It is only applicable when "linekey.X.type" is set to 22 or 45. It is not applicable to T19(P) E2/CP920
IP phones.
Permitted
Integer from 0 to 48
Values
Default 0
Web UI Dsskey->Line Key->Line KeyX->Line
Parameter features.flash_url_dsskey_led.enable
It enables or disables the LED indicator of the URL DSS key.
The LED indicator behavior depends on the response message from the server when you press the URL
Description
DSS key on the phone.
Note: It is not applicable to T19(P) E2/CP920 IP phones.
0-Disabled
Permitted
Values
1-Enabled
Default 1
Parameter features.block_linekey_in_menu.enable <y0000000000xx>.cfg
It enables or disables the phone to prevent the user from using line keys when browsing the menu.
Description
Note: It is not applicable to T48S/T48G/T19(P) E2/CP920 IP phones.
0-Disabled
Permitted
Values
1-Enabled, it prevents the user from using line keys.
Default 0
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<y0000000000xx>.cfg
<y0000000000xx>.cfg