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New Member

ICS 7750 with bogen paging amp


I'm trying to get a customer's new 7750 to utilze their old bogen tpu60b amplifier for paging and night bells and I have two questions.

I picked up a bogen TAMB device to interface between the amp and either an ATA181 or an FXS port on the MRP-8FXS. I need 48v idle-voltage for this and it doesn't look like the MRP supports this because the idle-voltage {low | high}command is not available. Can anyone verify this for me?

In order to utilize the night ringer I need to activate it with either a 90v ring signal or a dry contact closure. Any suggestions on the best way to do that?

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New Member

Re: ICS 7750 with bogen paging amp

The TAMB can be wired with an external power supply - this is the best way to go...Bogen actually sells the power supply, but it is 75 bucks and you have to wire it to the TAMB yourself.

I have chopped off the end of a laptop power supply and wired it directly in - that works, but of course it's dangerous and not supported.

New Member

Re: ICS 7750 with bogen paging amp

I actually got the paging to work without a power supply using an ata186 and the night ringer works with an fxo port.

Now I have to do the same thing with an old viking pa-2a.


Re: ICS 7750 with bogen paging amp

What did you do to get it working?

New Member

Re: ICS 7750 with bogen paging amp

For gaging I connected a mgcp controlled fxs port to the tamb, gave it an extension and disabled battery-reversal on the voice-port.

For the night ringer I connected an ata 186 directly to the tpu60-b and set the ata 186 as an h323 phone and gave it an extension and put it in a call pickup group. When the extension is called the night bells ring. Why it worked with the ata and not a fxs port on the mrp I don't know.

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