sundance-communications.com/forum Forums TDM Business Telephone Systems Comdial Telephones & Systems MOH Volume for FX II

Hello everyone,

I provide MOH for a client who has a Comdial FX II phone system. I have never worked with an FX II and don't really know anything about them other than what I can find on the internet. The client is on the other side of the country from me so I'm having to communicate with them via phone.

It seems that they recently lost power to their phone system due to storms, and when the system was brought back up, the MOH volume has dropped to a very low level. The volume level for the MOH was fine before their system went down.

From what I can determine the MOH imput level for the phone system is 500 ohms, and the MOH device is currently set to 1K ohms. I know that this is a bit of a mismatch, but, once again, it was working fine before their system went down.

Through speaking with the client we determined that the MOH is using an audio cable that is RCA where it is plugged into the MOH device and RJ-11 where it connects to the phone system.

Is there a way to turn up the MOH volume in the programming of the phone system?

If I need to, I believe I can make an RCA to RJ-11 cord with a transformer from 1K to 500 ohms, (if I can find a transformer for that), but I'm not sure if this would make a difference in the volume level, or what pins I would need to attach the MOH to on the RJ-11 jack.

Does anyone have any suggestions or answers because I'm a bit stumped and just want to get this up and working for my client.

Thanks in advance.

There is no way to turn up the music through programming.

Manual says appoximately 500 Ohms

Music source 1 is connected to pins 2 and 5

Music source 2 is connected to pins 1 and 6

If it dropped following a storm, I'd wonder whether or not either the MOH unit or the MOH port on the Services board took a hit. You could try moving to the second MOH port, but that would probably be pretty painful to walk them through, and then you would have to be able to access the second MOH port (accessible via feature code, if allowed in programming).

Even easier. Swap out the music source with another non-ampified source and see if the problem remains. I've found that often times something like a "Discman" CD player doesn't have enough output, or is the wrong impedence, causing low volume on the system. In your case, though, you mentioned it was working until the storm came. I'd start trying to isolate the problem, rather than trying to correct this new problem with a matching transformer. That's my opinion, anyway.

Justin

Thanks nah and 5years&counting,

I was having a haywire day yesterday and was trying to solve the wrong problem, I got fixated on the impedance thing, which is a hazard of the technically minded I suppose. This morning I had them take the phone system down for a few seconds and pull it back up, and powercycled the MOH unit, and that fixed the volume issue.

Thanks again for the help guys.