Integrated services digital network (ISDN) test device

Details Integrated services digital network (ISDN) test device Integrated services digital network (ISDN) test device

1990-06-06

1992-10-20

Smith, Jerry

Excavating

371 205, 371 162, 371 151, 3701101, 370 13, G06F 1100

Patent

active

051576651

ABSTRACT:
A portable, hand-held test device which is adapted to be utilized with Integrated Services Digital Network (ISDN) equipment and alternatively connected to either a Terminal Equipment (TE) device or a Network Termination (NT) device, and which is capable of alternatively emulating either a TE device or an NT device during a line activation sequence, whereby (1) when the test device is connected to a TE device and is instructed to emulate an NT device, the test device can determine if the TE device is operating in accordance with ISDN standards, and (2) when the test device is connected to an NT device and is instructed to emulate a TE device, the rest device can determine if the NT device is operating in accordance with ISDN standards. The test device is also adapted to test various lengths of RJ45 cabling within the network to determine whether the RJ45 cabling is functioning properly and, if it is not, to determine certain things about the nature of the malfunction. In addition, the test device is particularly well suited to (1) quickly and easily testing numerous TE devices, or numerous jacks on NT devices, in rapid succession, (2) quickly and easily identifying which one of a plurality of cable ends is connected to a particular TE or NT device, (3) monitoring an ISDN data exchange between a particular TE device and a particular NT device and displaying information regarding the same to the user, and (4) being connected to either a TE or NT device and which is capable of looping back to that device data originating at that device.

REFERENCES:
patent: 4138599 (1979-02-01), Munter
patent: 4878048 (1989-10-01), Gottesman et al.
patent: 4910729 (1990-03-01), Coffelt et al.
patent: 4989202 (1991-01-01), Soto et al.
patent: 4998240 (1991-03-01), Williams
patent: 5023869 (1991-06-01), Grover et al.
patent: 5027343 (1991-06-01), Chan et al.

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