What to do if extensions (except IP-PT/ SIP Extension) do not operate on my Panasonic Telephone?
- Aalexis58Aug 28, 2025
If extensions (excluding IP-PT/SIP Extensions) do not operate on your Panasonic Telephone, first check the connection between the PBX and the extension by plugging the extension into the same extension port using a short telephone cord. If it works, repair the original connection. If it still doesn't work, plug the extension into another working extension port; if it fails, replace the extension. Also, ensure that a 2-wire cord is used and that the A-A1 relay switch of the telephone is in the "OUT" or "OFF" position. If none of these steps resolve the issue, the extension card may be malfunctioning and require replacement.























