Telephone exchange including less display elements than channels
First Claim
1. A telephone exchange which accommodates a line having a plurality of channels as well as a plurality of terminals, comprising:
- monitoring means for monitoring states of the channels of the line;
informing means for individually informing each of the terminals of the states of the channels; and
display means for displaying the state of the channels informed by said informing means so as to distinguish between idle channels and channels in use by the number of display elements less than the number of the channels,wherein said display means displays the states of the channels in a first mode or in a second mode depending upon whether the number of idle channels and channels in use is within a predetermined range.
1 Assignment
0 Petitions
Accused Products
Abstract
A telephone exchange accommodates a plurality of lines in a primary group of an Integrated Services Digital Network (ISDN), as well as a plurality of extension terminals, in which a plurality of channels constitute each line. Control is performed in such a manner that the status of a line of an extension terminal when this terminal is using one channel among the plurality thereof is indicated by lighting an Light Emitting Diode (LED) in the color green, the status of a line of an extension terminal when this terminal is not using any of the plurality of channels but all of these channels are being used by other terminals is indicated by lighting the LED in the color red, and the status of a line of an extension terminal when this terminal is not using any of the plurality of channels but some of these channels are being used by other terminals is indicated by flashing the LED in the color red. The flashing period of the flashing red LED is made to differ in dependence upon the total number of channels and the number of channels in use.
40 Citations
22 Claims
-
1. A telephone exchange which accommodates a line having a plurality of channels as well as a plurality of terminals, comprising:
-
monitoring means for monitoring states of the channels of the line; informing means for individually informing each of the terminals of the states of the channels; and display means for displaying the state of the channels informed by said informing means so as to distinguish between idle channels and channels in use by the number of display elements less than the number of the channels, wherein said display means displays the states of the channels in a first mode or in a second mode depending upon whether the number of idle channels and channels in use is within a predetermined range. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. A method of controlling display elements for a communication system which performs a communication via a plurality of channels and has display elements fewer than the plurality of channels in number, comprising the steps of:
-
judging states of the plurality of channels; selecting a first mode or a second mode depending upon whether the number of idle channels and channels in use is within a predetermined range; and controlling the display elements in accordance with the mode selected at said selecting step. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
-
Specification