I am helping with an Executone Medley system. The system was installed in an office and working. The system was moved to a new office. Three extensions no longer work.

I have verified the 66 block wiring, and tried a known working phone connected directly at the block. The phones did not work at the block either.

When I connect a phone to a working port I get an immediate reaction on the phone display and it comes up in a few seconds. When I connect to one of the non-working ports, I get nothing.

Given other issues seen at the install site, I'm concerned that these extensions could have been initially miswired.

Has anyone seen issues with failed ports?

Could it be a programming issue?

Any other ideas?

Thanks in advance!