07-08-2011 11:50 PM - edited 03-16-2019 05:51 AM
I have a customer that has 2811 router with a vwic2-4fxo. There is a route pattern whose destination is a port on that fxo card, the cable of which is twisted directly into a self-amplified speaker series (without a paging interface). I am all but positive that this cannot work, but tried in vain to prove myself wrong.
Am I wrong? Is this setup posible? Anyone have experience with this type of setup? If so, would you mind providing some insight?
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07-09-2011 12:51 AM
The speakers will receive the ringing voltage but will never loop to answe the call so the page will not go through. You need a paging interface that will detect the ring voltage and open the circuit so the audio will pass through. Valcom and Viking sell simple one-zone paging controllers for around $200 that will do the trick.
07-09-2011 12:51 AM
The speakers will receive the ringing voltage but will never loop to answe the call so the page will not go through. You need a paging interface that will detect the ring voltage and open the circuit so the audio will pass through. Valcom and Viking sell simple one-zone paging controllers for around $200 that will do the trick.
07-11-2011 11:54 AM
This is what I knew to be true (from my experience) but I needed a sanity check because the installer said they he had aways done them that way and all he required was 600 ohm resistance and clear channel.
As a final bit of sanity check, should the call attempt to complete, but simply not have any audio? I ask because when I call that route pattern, I don't see the port light on 0/0/0 (the fxo card) light up at all. I just get a busy signal. Is this expected behavior?
07-12-2011 10:55 AM
That would be expected behavior. I do not believe the FXO port will light up until the loop is completed which will never happen without a paging controller.
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