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Testing of PABX telephone lines

A technology for telephone lines and testing devices, applied in telephone communication, monitoring/monitoring/testing arrangements, relay circuits, etc., to solve problems such as difficulty in identifying faults

Inactive Publication Date: 2004-06-09
OAKDENE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] It is always difficult to identify a fault with a PABX if the problem is the responsibility of the organization that supplies and services the PABX and its associated wiring, or the utility that supplies the telephone lines.

Method used

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  • Testing of PABX telephone lines
  • Testing of PABX telephone lines
  • Testing of PABX telephone lines

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] now refer to figure 1 , a telephone line testing device according to the present invention is generally indicated by the reference numeral 10 . The telephone line testing device 10 comprises a test circuit 13, a first connection device 14 for connecting to the telephone line 12 of the telephone system, a second connection device 15 for connecting to the input line 16 of the PABX 17, for connecting to the test circuit 13 The third connection means 18, and the first switch 19 for connecting the PABX line 16 or the test circuit 13 to the telephone line 12. The connection means 14, 15 and 18 are respectively in the form of a set of terminals 20.1 and 20.2, 21.1 and 21.2 and 22.1 and 22.2. The first switch 19 has contacts 25.1 and 25.2, 27.1 and 27.2, 29.1 and 29.2 and contactors 31.1 and 31.2, so the first switch 19 is a bipolar switch. Contactors 31.1 and 31.2 are manually operated and connect contacts 25.1 and 25.2 to contacts 27.1 and 27.2 respectively or to contacts 2...

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PUM

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Abstract

A telephone line testing device for use with a PABX having a plurality of input lines. The testing device includes test circuitry, a first connecting means for connection to a telephone line of a telephone system, a second connecting means for connection to a desired input line of the PABX, a first switch means for connecting either the PABX input line or the test circuitry to the telephone line. The test circuitry includes a test signal generating means for generating a test signal, a ringing signal detection means for detecting the presence of a ringing signal on the telephone line, and a second switch means which is responsive to the ringing signal detection means for automatically supplying a test signal generated by the test signal generating means to the telephone system when the test circuitry is connected to the telephone line by the first switch means and a ringing signal is desired.

Description

technical field [0001] The present invention relates to a telephone line testing device for use with a PABX. Background technique [0002] US 3898396 provides test equipment for verifying trunk routing in a telephone system. Provides a series of spoken words to identify the area code and exchange to which the trunk being tested is connected. The device includes a plurality of input channels, each of which is connected to an authentication line of a corresponding telephone exchange. Detects a ringing signal on any channel and provides special logic circuitry to identify the desired exchange digit and generate the area code and exchange digit readout for that channel. [0003] Working with a PABX is always difficult to identify a fault if the problem is the responsibility of the organization that supplies and services the PABX and its associated wiring, or the utility that supplies the telephone lines. The present invention provides a solution to this. Contents of the inv...

Claims

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Application Information

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IPC IPC(8): H04M3/30H04M3/02H04M3/26H04M3/28H04M3/32H04M7/00H04Q3/58H04Q3/62
CPCH04M3/32H04M3/02H04M7/0096H04M3/28H04Q3/62H04M3/26
Inventor 彼特拉斯·C·A·万鲁延
Owner OAKDENE LTD
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