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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Jim Van Meggelen
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http://www.oreillynet.com/pub/au/2177
"A child is the ultimate startup, and I have three.
This makes me rich."
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