atcomsystems.ca/forum Forums TDM Business Telephone Systems NEC Telephones & Systems NEC Electra Elite Caller ID with Viking PA-2A loud ringere

Yesterday I modified a NEC Electra Elite 48 by changing the COI (8) card with a COIB (8). I had to move slots and in tern had to reprogram much of the the CO line information. I made all the changes (and then some) to get the Caller ID to work. I am not an NEC expert so bear with me.

In the process of testing the system a wierd thing happened. The calls ring in for 2 rings caller Id is displayed and the loud ringer blasts away. Then after two rings "something" answers the call then hangs up. The only things connected to the CO lines are the phone system and the Viking PA-2A loud ringer. When the loud ringer is unplugged the system works fine. I contacted Viking and they haven't a clue.

Does anyone know of any settings in the phone system that could be creating an incompatibility with the loud ringer. Or Does anyone have any suggestions of where to look

how does the viking connect? straight onto the co lines?


as far as the answering thing....are you hearing anything when it answers? do you have a voicemail? answering machine?

Viking connects directly to BellSouth 66 Block. Same place that I jumper from to go to CO block for phone system. There is nothing else. No voicemail, except from BellSouth, no answering machine, no fax.

does something answer after 4 rings, is that what you are saying, and if so does something answer when you take the loud ringer off?

I talked to devildog about this yesterday. If he takes the ringer off everthing works fine the call just continues to ring unlii customer answers as soon as he connects the Viking it rings twice then stops and hangs up. I know the Viking worked fine for him before installed the new card

Bellsouth Voicemail answers after 4-5 rings w/o Viking connected. This is what is supposed to happen. When Viking is connected, "something" answers at 2 rings. There is dead air. Then the line is dropped. This happens on all 4 CO lines. All CO lines go into Viking and NEC.

I may be wrong but I believe the Viking Unit uses
an optoisolator circuit and a non-polarizing capacitor across the lines.

NEC strongly recomends that there be no half-taps of any kind in front of the equipment.

When you changed to the B style CO card that card has circuitry that basically listens for the ring voltage and then listens for the FSK tones for the caller-id.

The combined capacitance and lower resitance of the two may be causing a premature ring trip.

Unfortunatly you may have to add an ECR card to the NEC to get ringing over paging.


DJ

the Viking PA-2A is only supposed to take .3 ring volts. I find it hard to believe that that would be the answer, but the one test I plan to do is put an old school analog phone on the circuit and remove the Viking and see if it still happens.

I'd hate to have to add another card, just to get loud ringing. What do you think about adding a ring amplifier for the Viking? It's a cheaper option than the ECR card.

u did not have a problem until u had caller id on the lines, is this correct? and if so, put a fax line on the loud ringer and see if u have the same problem. I'm wondering if the caller id information is messing the viking unit up.

I'll do some more testing on Monday