Your Yealink SIP-T23P or SIP-T23G phone LCD display is blank (shows no time, lines, or messages). There is no dial tone, and you are unable to make or receive calls.
Yealink SIP-T23P & SIP-T23G
Ensure a reliable power source.
- Ensure that the phone is properly plugged into a functional AC outlet.
- If the phone is plugged into a socket controlled by a switch, ensure that the switch is on.
- If the phone is plugged into a power strip, try plugging it directly into a wall outlet instead.
- If your SIP-T23P/T23G IP phone is powered from PoE, ensure you use a PoE-compliant switch or hub.
It is likely your phone is not drawing power, either from an electrical outlet or a power-over-ethernet (PoE) source.