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Digital exchange system with function of displaying operation state of system

  • US 5,737,390 A
  • Filed: 09/13/1994
  • Issued: 04/07/1998
  • Est. Priority Date: 09/20/1993
  • Status: Expired due to Fees
First Claim
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1. A digital exchange apparatus which is connected to a digital communication network via a plurality of digital channels, and operates in synchronism with network clocks supplied from the digital communication network via one of the plurality of digital channels, comprising:

  • mode discrimination means for discriminating whether a start mode set in correspondence with said one of the digital channels which receives the network clocks is a first start mode for normally supplying the network clocks or a second start mode for supplying the network clocks only during a specific period including a communication period upon generation of a call; and

    mode display means for displaying the start mode discriminated by said mode discrimination means.

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