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The H.110 Basic Rate ISDN Board
Product Safety
The ISDN cord(s) must remain disconnected from the telecommunications
system until the card has been installed within a host which provides the
necessary protection of the operator.
If it is subsequently desired to open the host equipment for any reason, the
ISDN cord(s) must be disconnected prior to effecting access to any internal
parts which may carry telecommunications network voltages.
This board is not intended to be connected directly to the PSTN network.
Connection must be made by way of an approved NT-1 interface device.
It is the responsibility of the NT-1 to provide primary high voltage
protection.
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