I have RCA Executive Serices 4 lin system Phone and I used to use headset all of sudden I hace message saying " Error: inhibited ". Would you plaese help fix my problem. Thanks for your support in advance. Tom Hansem Travel

Tom,

I had the "error: inhibited" problem with my RCA 4-line Executive Series phone as well.
When I checked the line from the phone to the wall outlet, I saw that it had come undone.
After I plugged the phone back into the wall, it started working normally again.

I recommend substituting in a different, known-good telephone to see if that works.
If you can't get any phone to work plugged into that extension, then the extension is dead.
If another phone works but your RCA still will not, then the problem is with the RCA phone.

A similar idea is to try moving your RCA phone, substituting it in place of a working phone.
If it works in room X but not in room Y, suspect the phone wiring running to room Y.

This phone employs a common but awkward means of wiring up lines two and four.
Line two is wired to the wall by piggybacking on the patch cable used for line one.
Line four is wired to the wall by piggybacking on the patch cable used for line three.
A phone cord has four wires running through it, but a phone signal requires just two.
The piggybacking technique leverages the cable's free pair to feed a second line.

The upshot is that one can test the wiring for lines one and three with a simple, plain phone.
To test the wiring to lines two or four, some specialized knowledge is needed.
In place of that knowledge, a different two-line phone which also piggybacks might be used.

That's detail you'll need to consider only if your problem is specific to line 2 and/or line 4.

Anyhow, I hope I'm not patronizing by being too simple. But, I had this problem too.
It turned out to have nothing to do with the phone itself; the signal wiring to it was bad.

I realize that this feedback is a bit late and that you've likely already resolved your issue.
Perhaps this feedback will someday help somebody else (since these Q&As are archived).

Regards,

Lincoln

I get the same thing. Did you figure it out?