T22P Speaker Muted after Firmware Upgrade?

[James_Yealink]

Hi,

Do you mean that when there is an incoming call, you can see the call info in phone LCD but speaker doesn't ring?

Can you try these steps in a phone with V73:
1. Disconnect network cable.
2. Reset phone by Menu-> Setting-> Advanced setting-> Reset.
3. After rebooting, try the speaker button.

Note: Network cable can't be connected to phone in the whole process.

Regards,
James