T23G red light flashing for no apparent reason

[complex1]

Hi,

You can find it in the Release Note of V81 on page 111.

Description:
It enables or disables the power indicator LED to flash when the IP phone misses a call.

CFG Configuration:
phone_setting.missed_call_power_led_flash.enable

Valid Value:
(0-Disabled:power indicator LED is off; 1-Enabled:power indicator LED is solid red)

Hope this help.