High voltage. Very low amperage.
On 10/8/2010 4:06 PM, Steven McCann wrote:
Thanks Jim. I'm surprised it is this high. I think our BEP clamps at 240V,
so I guess that is proper for telco lines. I thought it was lower though to
be honest.. but as long as our FXS ports can handle up to the 240V charge
I'm ok.
FYI for anyone using a FXO card in areas that get hit by lightning - BEP's
work very well. Previously we had a card that got fried 3 times in one
summer from lightning (it even melted some components on the card), but now
its been up for two years without going down, and apparently
240V clamping digital modules is sufficient for it. Don't quote me on that
though. Our BEP is from Circa, but I think there is many you can buy from
Anixter
Cheers,
Steven
On Wed, Oct 6, 2010 at 5:05 PM, Jim Van Meggelen<[email protected]> wrote:
Ringing voltage is nominally 90VAC, but it could be anywhere from about
70VAC to possibly even as high as 120VAC.
DC voltage on-hook should be about 48VDC. Off-hook I think it's typically
about 6 or 7VDC
On 10/6/2010 4:52 PM, Steven McCann wrote:
Hello All,
I'm looking at getting some Building Entrance Protector modules to protect
the FXO ports on a TDM card, and I need to buy them at a certain clamping
voltage. Does anyone know the specs on the voltage at different times for
a
Bell phone line in Ontario? I think the ring is the main event that we
need
to provision our equipment up to.
Is it more than 60V?
Thanks,
Steven
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This makes me rich."
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Guy Kawasaki
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