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Author Topic: Analog Telephone Adapter recommendations other than Grandstream?  (Read 3681 times)

Offline Jonathan

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Analog Telephone Adapter recommendations other than Grandstream?
« on: September 14, 2010, 02:48:27 PM »
Anyone know of an ATA that will run off of a Cisco 3560 or 3750 PoE port without an external power supply? Grandstream's units all require an external power supply...

Thanks,

Jonathan
Mitel 3300 ICP running 4.0

Edited July-15-2012: See the store for more on GrandStream's analog adapter
« Last Edit: July 15, 2012, 09:38:48 PM by ralph »
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Offline Chakara

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Re: Analog Telephone Adapter recommendations other than Grandstream?
« Reply #1 on: September 20, 2010, 09:56:46 PM »
  I think the reason they don't make these is the ring voltage requirements.  Maybe now that with newer PoE we have 34 Watts we'll start to see them show up.  Still not sure it is enough.

-Chak
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Offline Jonathan

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Re: Analog Telephone Adapter recommendations other than Grandstream?
« Reply #2 on: October 03, 2010, 11:16:44 PM »
Hadn't thought about ring voltage. That makes perfect sense, though. But if you're using the adapter for outbound dialing only, then you don't need ring voltage...
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Offline Chakara

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Re: Analog Telephone Adapter recommendations other than Grandstream?
« Reply #3 on: October 05, 2010, 11:42:01 PM »
True enough, but people don't generally make ATA's for outbound only......

-Chak
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