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Yealink SIP-T53 Administrator's Guide

Yealink SIP-T53
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Advanced Features
452
For other phones, the BLF/BLF list DSS key LED glows green for 1000ms and then goes out.
Note: It works only if “blf.enhanced.hold.enable is set to 1 (Enabled).
Permitted
Values
String
Default
Blank
Supported
Devices
All phones except T48G, T46G, T42G, T41P, T29G, T19(P) E2 and CP920
BLF Key LED/Icon and Behavior for DND State Configuration
The following table lists the parameters you can use to configure BLF key LED/icon and Behavior for DND state
(DND is activated on the monitored phone).
Parameter
blf.enhanced.dnd.enable <y0000000000xx>.cfg
Description
It enables or disables the custom configuration when DND is activated on the monitored phone.
Permitted
Values
0-Disabled
1-Enabled, the phone will display the custom BLF/BLF List DSS key LED status/icon colors.
Default
0
Supported
Devices
All phones except T48G, T46G, T42G, T41P, T29G, T19(P) E2 and CP920
Parameter
blf.enhanced.dnd.led <y0000000000xx>.cfg
Description
It configures the custom BLF/BLF List DSS key LED status/icon colors when DND is activated on the
monitored phone.
This value uses the same macro action string syntax as an Enhanced DSS key.
Example:
blf.enhanced.dnd.led = $LEDrd1000o100yd300$
For T57W/T48U/T48S phones, an infinite loop for the BLF/BLF List DSS key field: displays a red icon
for 1000ms, turns to white for 100ms and then displays a yellow icon for 300ms.
For other phones, an infinite loop for the BLF/BLF list DSS key LED status: glows red for 1000ms, be
in the off state for 100ms and then glows yellow for 300ms.
Note: It works only if “blf.enhanced.dnd.enable” is set to 1 (Enabled).
Permitted
Values
String
Default
Blank
Supported
Devices
All phones except T48G, T46G, T42G, T41P, T29G, T19(P) E2 and CP920
BLF Key for Intercom Configuration
The BLF key (not include BLF List key) can also be used to initiate an intercom call.
The following table lists the parameter you can use to configure BLF key for Intercom.
Parameter
features.blf.intercom_mode.enable <y0000000000xx>.cfg
Description
It enables or disables the phone to initiate an outgoing intercom call with a monitored user when
pressing the BLF key.
Note: To use this feature, you also need to configure the intercom mode (configured by the parameter

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Yealink SIP-T53 Specifications

General IconGeneral
NetworkDual-port Gigabit Ethernet
SIP Accounts12
Lines12
Stand IncludedYes
PoEYes (IEEE 802.3af)
USB Port1 x USB 2.0
Headset SupportRJ9 and USB
Audio FeaturesHD Voice
Expansion Module SupportYes, up to 3
Voice CodecsG.722, G.711
Network FeaturesIPv4/IPv6, VLAN, QoS
Local Phonebook1000 entries
MountingDesk mount, Wall mount
Power SupplyOptional
Weight1.1 kg
Resolution360 x 160

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