External Paging

Unanswered Question
May 7th, 2009
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Customer has a an old paging system that requires a talk path and a control lead.This worked before on a nortel pbx paging card but now we have taken that away and put in a 2821. What card do I need to interface with the paging system. I am pasting the requirements that the paging system is looking for.

Auxiliary requirements

1. Page audio: 0 dbm, 600-900

2. Page Control: “A” contact, nor. Open

3. Monitor: 48 volts dc nom. 1200 ohms max. source/line resistance

Will a standard e&m card work or is something else required?

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Rob Huffman Thu, 05/07/2009 - 10:23
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Hi Robert,

In most cases where a Nortel Paging card is being replaced, you will need some "mid-span" type device. In the Nortel setup with the XUT set for Paging, when someone dialed DN xxxx the Paging Card would answer and just "Bridge" the Audio over to the Amp. All the Smarts so to speak are in the Nortel Paging Card (Ring detection, Audio Cut-through etc) so the equivalent is to use this Part with an FXS Port.

Something like this;


Hope this helps!



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