Re: KX-T: Vonage VOIP?

[Bob [EMAIL PROTECTED]]

Good point.  I'd probably do something a little higher, like 2-4uF.  They provide I believe 48v, and 
the ringing voltage is simply flipping the 48v back and forth in polarity at 25hz, so it's a little 
weak, but it works.  Pretty neat, when you realize they are switching this up from the 5v power supply.

Bob

chris Snyder wrote:
A diode bridged with a 1 Uf. 400 volt capacitor ( so as to pass the AC
ring voltage).
Otherwise you will lose ringing from the unit.
How many volts is the DC loop on this unit?

On Wed, 03 Dec 2003 21:47:52 -0500 "Bob [EMAIL PROTECTED]" <[EMAIL PROTECTED]>
writes:
...Because you can tell the ATA to reverse polarity when the callee 
hangs up, and do your drop of 
loop current by simply inserting a diode in the path.  The issue I 
contacted Cisco about is exactly 
for this purpose, and it won't work exactly out of the box as it 
should.  Hopefully this latest 
firmware update will correct this, so you can get it to make your 
KXTD drop connection properly 
(bringing the thread back to KXT...heh).

Bob

David Lesher wrote:

Speaking on Deep Background, the Press Secretary whispered:


Actually, I'm going through some stuff with Cisco right now on 
getting the polarity reversals to be 

correct in the ATA186.  It currently is very wrong.  They are 
getting closer though.

Where do the demands for reversals come from? The box is
{allegedly} emulating a CO, and reversals were last seen in what,
Panel/Step offices? I don't recall any with #1XB.
What is needed should be simple. A solid second, 1000ms, of no
loop current to indicate an abandoned call. Why that time? The 
only

references I could find in BSP's was the 1A2's 400D card setting;
they dropped on a 500ms interuption so I doubled that, to be 
sure.

Is there some issue I don't know of re: KXTD's and detecting CPC?
It seems to work for me.



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Chris Snyder
Advantage Telcom
Cosby, Tn.
Sevier County's oldest interconnect.
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