Yealink SIP-T3 Administrator's Manual page 287

0-Disabled (power LED indicator does not flash)
1-Enabled (power LED indicator slowly flashes (1s) yellow)
2-Enabled (if there are unread voice mails or text messages, the power LED indicator slowly flashes
(1s) yellow even when the phone is busy, but value set by "phone_setting.talk_and_dial_power_led_
enable" has a higher priority.)
Default 1
Supported
All phones except CP920/CP925/CP935W
Devices
Web UI Features > Power LED > Voice/Text Mail Power Light Flash
Parameter phone_setting.mute_power_led_flash_enable
Description It enables or disables the power LED indicator to flash when a call is muted.
0-Disabled (power LED indicator does not flash)
1-Enabled (power LED indicator fast flashes (0.3s) red)
Permitted
For T19(P) E2 phones:
Values
0-Disabled (power LED indicator does not flash)
1-Enabled (power LED indicator fast flashes (0.3s) yellow)
Default 0
Supported
All phones except CP920/CP925/CP935W
Devices
Web UI Features > Power LED > Mute Power Light Flash
Parameter phone_setting.hold_and_held_power_led_flash_enable
Description It enables or disables the power LED indicator to flash when a call is placed on hold or is held.
0-Disabled (power LED indicator does not flash)
1-Enabled ( power LED indicator fast flashes (0.5s) red)
Permitted
For T19(P) E2 phones:
Values
0-Disabled (power LED indicator does not flash)
1-Enabled ( power LED indicator fast flashes (0.5s) yellow)
Default 0
Supported
All phones except CP920/CP925/CP935W
Devices
Web UI Features > Power LED > Hold/Held Power Light Flash
Parameter phone_setting.talk_and_dial_power_led_enable
Description It enables or disables the power LED indicator to be turned on when the phone is busy.
0-Disabled (power LED indicator is off)
1-Enabled (power LED indicator glows red)
Permitted
Values
For T19(P) E2 phones:
0-Disabled (power LED indicator is off)
Phone Customization
<y0000000000xx>.cfg
<y0000000000xx>.cfg
<y0000000000xx>.cfg
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