sundance-communications.com/forum Forums TDM Business Telephone Systems Nortel Telephones & Systems Paging Problem

From recent posts I talked about installing a Norstar with a PCM2000 from Bogen. Everything is up and working great, I can't get the PCM's paging to work through the page port of the norstar, so I hooked up the paging dry audio and contact closure for the external paging into the PCM's emergency override. Now, the phones and speakers all work off of the same page button. I am having one problem, If I press LINE TWO 00, The page goes to the PCM and is very loud, how it should be. If I use the page port, it is very quiet.

I am assuming that this is because the system amplifies the trunk lines, and not the page pair. My question is, is there something I can do to boost that audio from the page port or a device I can use?

I did this setup this way because I highly doubt there is a way to link the phone page with a trunk port and still allow DTMF tones.

Let me know if any of you have an idea, It might be as simple as adding a small MOH amp?

Thanks,

Kristopher.

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yes you can use a co trunk and it will allow dtmf its been a while but i beleive that with the pcm if you are using differentzones you will have to use a co port

Kris the PCM has many configurations do you have the conf. guide. https://www.bogen.com/products/pdfs/telephonepagepdfs/PCM200c.pdf

I have the conf guide, but the Norstars don't pass DTMF through the page port, so when you enter [Page] [0][0], the Norstar hangs up the connection.

I can sucessfully page through the CO port, and can page all with the Page Port through PCM Override port, but the page port audio on the Norstar is very weak.

I have all of the manuals for the PCM, and have it setup well, I believe.

It's more of a Norstar problem for that.

The reason I am doing this is because there are rooms that only have phones, and the paging needs to get to those too. It isn't within budget to get speakers in there, so I am trying to combine the two.

Basically, I think I just need to boost the page port output from the Norstar into the PCM's override port.

Can I use a MOH Amp for this, or is there a better solution?

When you page through the co are you running a small power supply in series for the connection?

I don't have anything more than the PCM plugged into the KSU's CO. I assume the CO is amplified or has talk battery as it is louder than the page port.

Okay, let me get this straight.

In order for you to use zone selection, you have to use a trunk port connected into the PCM's "Tel Line" input jack, (because Nortel doesn't pass tones from the page port) correct?

The problem with this is that no paging occurs to the sets in the rooms where there are no speakers.

So you have also connected the page port output of the KSU to the "over ride" input on the PCM.

By pressing a page all (feature 630), all zones on the PCM get the page as well as all sets on the KSU. The problem you are having is this is a lower volume input on the PCM compared to the trunk-to-tel line input, correct so far?

If the PCM had separate volume controls (input sensitivity controls) for the "tel input" and "over ride" input, you could adjust this ratio to make them even sounding, but it doesn't. So you have to either cut the input down a bit on the trunk out and run the PCM hotter or step up the page out to increase the level to the over ride.

Resistor the trunk out (or add a pot) or use an audio transformer to step up the page out before it hits the "over ride" input.

That's exactly what is happening and is wanted. There isn't a sensitivity on the over-ride, I believe it is just the audio repeated that comes in exactly how it sounds. Just a guess.

I would use a line level volume control and cut back the trunk feed into the PCM. It's not that the page output is too low on Norstars, it's a 600ohm output. It's the trunk out that's too high. If you use a volume control, you will be able to "match" the feeds precisely and turn the PCM's master up higher.

I would use the Audioplex LLP-1D:
https://www.hometech.com/audio/linevol.html
Just use one side of it (it's a stereo control, RCA in/out, click on the bottom of that pic to see the back). Mount it in a box on the backboard. It is available from most security dealers (Burtek carries them).

The other alternative would be the Bogen WMT1A matching transformer. https://www.bogen.com/products/pdfs/specialelectronicspdfs/WMT1As.pdf

Okay, I will look into that, thanks!