Panasonic KX-TA624 telephone system known problems

25 September 2017 25 September 2017

Applies to

This article applies to the following products.

Panasonic KX-TA624

Intermittent problems with incoming calls

Symptoms

Any or all of the following might happen.

Some incoming calls ring the correct extensions as you expect.
Sometimes an incoming call only rings some of the extensions you expect.
Sometimes the phones ring once then stop.
When callers do manage to get through, they complain that they have called several times and not been answered, or that someone has answered and immediately hung up. Despite a caller saying they have called several times, you are certain that the telephones have not rung.

Cause

The problem is caused by a fault within the KX-TA624 control unit.

Repair

The only repair we know of is the complete replacement of the control unit. As the KX-TA624 has been out of production for a considerable time and new replacements are not available, we recommend either replacing it with a KX-TES824, which is very similar and uses the same telephones, or replacing it with a completely different new system.