MWI light stuck on DTerm Series III - PBX Info :: Your Free PBX, PABX and Telephone Information Resource

cabal95 · 10-09-2007, 12:06 PM

I have an NEC 2000 system with about 60 DTerm Series III phones. Occasionally, maybe once a month, 2 or 3 of the phones turn on their MWI and it will not go off. The voicemail system cannot turn it off, I cannot turn it off manually with a number plan command (CMD 20, Data=041), it almost seems like a diffferent feature turned the light on but I cannot find any reference to any such feature. The only way to turn off the light is to unprogram the phone and then re-program it and it will work normally again.

Also, one of the phones, it is permanently stuck on. Every time I reprogram the phone the light comes back on in a few seconds. I am 100% sure it is not the voicemail, I even disconnected the VM while testing it it still turned on. I even tried setting the phone to not support the MWI (CMD 13, YY=03) yet it still turns the light on.

If anybody could give me some insight into what to look for it would be greatly appreciated!

R4+Z · 10-10-2007, 12:14 AM

The feature that is causing your problem is probably an old feature called Dterm to Dterm messaging. To clear these the easiest way is set a code to A146 in CMD 200. you then go to the phone and dial that code, it should then show how many messages are waiting, dial 3 to delete. This will only delete one message so if it said 3 messages, you will need to do it 3 times. Once you have the system cleared up you can probably stop this from happening again by changing 1524 for the service feature classes you use.

cabal95 · 10-10-2007, 11:55 AM

It appears this was mostly the problem. Maybe all of it, was a bit strange. I assume you meant A46 in CMD 200. I set that and dialed it on the 2 phones that were currently having the problem and they both showed "MSG NOTHING", yet after I hit 3 to delete the MWI light turned off. So far it has stayed off. Unfortunetely I cannot turn off 1524 as it also disables the ability of the VM service to turn on/off the lights for those that have VM on their phone. This seems to at-least resolve the problem without having to re-construct the phone each time, thanks!

R4+Z · 10-10-2007, 06:58 PM

You should be able to turn off 1524 but you would need to give a different class of service to the voicemail ports as this affects the ability to turn the lamps on. so just change the VM ports SFC to one that is currently unused then do as suggested before.

nirmalkaputa · 10-11-2007, 05:44 AM

check before go further these messages are a real voice mail messages or Call back facility activated?

R4+Z · 10-11-2007, 10:05 AM

This feature can't turn off a message set by MCI and vise versa. That's why he/she had the problem.

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