> Stupid question --- I thought that the voltage on the PSTN was
> DC, not AC. 

Not a stupid question at all; you are correct. Nominal 48VDC on an idle
line (drops to about 6VDC when off hook).

Ringing voltage, however, is AC


Jim.


> - --
> ] Michael Richardson          Xelerance Corporation, Ottawa,
> ON |  firewalls  [ ] mcr @ xelerance.com           Now doing
> IPsec training, see   |net architect[ ]
> http://www.sandelman.ca/mcr/    www.xelerance.com/training/  
> |device driver[ ]                    I'm a dad:
> http://www.sandelman.ca/lrmr/                 [  
> 
> -----BEGIN PGP SIGNATURE-----
> Version: GnuPG v1.2.2 (GNU/Linux)
> Comment: Finger me for keys
> 
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> lFzJ7H/ykpZrrcJIzMdQ7qy2Cl7MzjX01nd8oZy6s8UwkrpamZzqRBVJZxn/jk+u
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> BC6cwWvt7x8= =duXN
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