U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Testing of communication services and circuits

Patent 5463670 Issued on October 31, 1995. Estimated Expiration Date: Icon_subject October 31, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

Automatic call generator
Patent #: 4021624
Issued on: 05/03/1977
Inventor: Kelly ,   et al.

Method of and arrangement for testing traffic routes in telecommunication networks
Patent #: 4311882
Issued on: 01/19/1982
Inventor: Johner ,   et al.

Telephony system with automatic test call generator for remote port groups
Patent #: 4430530
Issued on: 02/07/1984
Inventor: Kandell ,   et al.

Subscriber/craftsperson ringback apparatus
Patent #: 4764949
Issued on: 08/16/1988
Inventor: Faith ,   et al.

Automatically testing telephone lines Patent #: 5073919
Issued on: 12/17/1991
Inventor: Hagensick

Inventors

Assignee

Application

No. 965458 filed on 10/23/1992

US Classes:

379/27.04By automatic testing sequence (e.g., programmable, test, script or test call generation program)

Examiners

Primary: Chin, Stephen
Assistant: Kim, Kevin

International Class

H04M 001/24

Abstract

Communications services and circuits are tested by a system which includes a voice response unit (VRU) operating under the control of processes performed in a workstation. The system can automate the various tasks associated with making test calls, such as by initiating one or multiple simultaneous test calls to a customer's telephone number, and then by playing a stored voice message when any of the test calls is answered by customer personnel, or by establishing a voice path that can be used to talk to the customer personnel. The circuits being tested are then monitored by the VRU, which can both detect supervisory signals as well as perform call disposition analysis by detecting ring, ring/no answer, busy, fast busy, tones, or other audible conditions that are indicative of many circuit abnormalities. A display indicates test system status to a technician, including the progress of all test calls as well as information pertaining to the test system itself. The system can be used by several technicians at one time.

Other References

  • R. Perdue et al. Conversant.RTM. 1 Voice System: Architecture and Applications, AT&T Technical Journal, vol. 65, Issue 5, pp. 34-47. Sep.-Oct., 1986
  • K. H. Nilsen "Measuring Network Performance with Automatic Test Calls" IEEE International Conference on Communications, Boston, Mass., pp. 385-388
  • G. K. Kelly, "A Microprocessor-Based Telex Traffic Route Tester", Conference on Microprocessor Systems, 1981, pp. 54-58
  • M. Hammano, et al. "Development of Multiload Test Call Generation/Remote Patch Throwing Control for Telex Switchboard", KDD Technical Journal, No. 142, pp. 68-75. This reference may possibly be relevant based on the Abstract obtained in a computer literature search (copy attached) which is in English. A translation of the reference has not been obtaine
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