Numerical user loop grab wire testing device and method

Numerical user loop grab wire testing device and method

  • CN 1,538,724 A
  • Filed: 12/22/2003
  • Published: 10/20/2004
  • Est. Priority Date: 12/24/2002
  • Status: Active Application
First Claim
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1. a local loop grab wire testing device is characterized in that, comprising:

  • Separator board, comprise many to relay and separator, the common port of each relay and the input of separator form tie point, link to each other respectively with each subscriber'"'"'s drop again, the output of separator links to each other with the PSTN net, the normal-closed end of relay is connected on each user'"'"'s plate, and Chang Kaiduan is connected on the protection bus;

    Control board;

    comprise control command input interface, test outlet, control logic circuit and many to relay;

    the control command input interface receives the control command on the control desk;

    action by all relays on control logic circuit unified control separator board and the control board;

    the common port of relay links to each other with the protection bus, and normal-closed end is connected to external test facility by the test outlet.

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