Self diagnostic system for cellular-transceiver systems with remote-reporting capabilities

• US 5,966,428 A
• Filed: 09/25/1998
• Issued: 10/12/1999
• Est. Priority Date: 07/24/1995
• Status: Expired due to Term

• Current Assignee: Telular Corporation (Ametek Incorporated)
• Original Assignee: Telular Corporation (Ametek Incorporated)
• Inventors: Ramos, Alexis Torres, Ortiz Perez, Luis R.
• Primary Examiner(s): LOOMIS, PAUL A
• Application Number:
  US09/160,995
• Time in Patent Office: 382 Days
• Field of Search: 379/27, 379/29, 379/32, 379/34, 379/5, 379/1, 379/6, 455/423, 455/424, 455/425, 455/67.1, 455/67.4
• US Class Current: 379/27.02
• CPC Class Codes: H04M 1/24 Arrangements for testing
• CPC Class Codes: H04M 1/725 Cordless telephones user interfaces specially adapted therefor H04M1/724
• CPC Class Codes: H04W 24/00 Supervisory, monitoring or testing arrangements
• CPC Class Codes: H04W 84/14 WLL [Wireless Local Loop]; RLL [Radio Local Loop]

Abstract

A self-diagnostic system for a checking all functions of a cellular-transceiver system having a cellular-interface unit, which interface unit couples a standard telephone set to a cellular transceiver, which interface unit converts the DTMF or pulse-type of dialing signals into digital format for transmission to the cellular transceiver, whereby the dialed number made on the land-type of telephone may be used to call a number over the cellular system. The present invention not only monitors and checks the proper functioning of the transceiver and associated power supply, and the like, but will also monitor and check the interface unit, and report the results to an off-site monitoring center by means of the cellular network.

Claims

1. In an apparatus for testing the proper functioning of a cellular, or cellular-like, transceiver and a cellular, or cellular-like, interface unit operatively coupled to said cellular transceiver, said apparatus comprising a cellular, or cellular-like, transceiver and a cellular, or cellular-like, interface unit operatively coupled to said cellular transceiver, and a land-type telephone device directly coupled to said cellular, or cellular-like, interface unit, said interface unit coupling said land-type telephone device to said cellular, or cellular-like, transceiver, whereby said land-type telephone device is coupled for use with the cellular, or cellular-like, system, the improvement comprising:

said apparatus comprising auto-diagnostic means coupled to said interface unit for generating signals for testing the operation of said cellular, or cellular-like, interface unit;

remote-testing initiation means for generating a signal for initiating in said auto-diagnostic means the initiation of the testing of the proper functioning of the the cellular, or cellular-like, interface unit operatively coupled to said cellular transceiver; and

signal-responsive means associated with said auto-diagnostic means responsive to said signal from said remote-testing initiation means for starting the testing process of said auto-diagnostic means.

2. The apparatus according to claim 1, further comprising remote-reporting means operatively associated with said auto-diagnostic means for reporting data representing the results of the test of said auto-diagnostic means to a remote telemaintenance center by means of said cellular, or cellular-like, transceiver.

3. The apparatus according to claim 2, further comprising a remote telemaintenance center which receives said test-results data caused to be sent by said remote-reporting means, said remote telemaintenance center comprising means for receiving and processing said test-results data.

4. The apparatus according to claim 3, wherein said remote telemaintenance center comprises signal means for answering said remote-reporting means for indicating that the test-results data should be sent.

5. The apparatus according to claim 4, wherein said remote telemaintenance center comprises signal means for answering said remote-reporting means for indicating that the test-results data have been successfully received.

6. The apparatus according to claim 5, wherein each said signal means comprises means for generating a 1020 Hz. tone;

said remote-reporting means comprising signal-receiving means for receiving said 1020 Hz. tone.

7. The apparatus according to claim 5, wherein said remote-reporting means comprises means for retrying the transmission of said test-results data;

said means for retrying comprises means for limiting the number of attempts of retrying the transmission of said test-results data.

8. The apparatus according to claim 2, wherein said remote-reporting means comprises means for establishing a call to the telephone number of said remote telemaintenance center via the cellular, or cellular-like, network, and means for retrying to establish said call if a first attempt has failed.

9. The apparatus according to claim 2, wherein said remote telemaintenance center comprises means for sending a signal via the cellular, or cellular-like, network, to said remote-reporting means for causing said remote-reporting means to actuate said auto-diagnoctic means in order to perform a self-diagnostic test;

said remote-reporting means having signal-receiving means for receiving said test-initation signal.

10. The apparatus according to claim 9, wherein said remote-reporting means comprises means for establishing a call to the telephone number of said remote telemaintenance center via the cellular, or cellular-like, network, and means for retrying to establish said call if a first attempt has failed.

11. The apparatus according to claim 1, wherein said auto-diagnostic means comprises means for simulating the functions performed by a standard, land telephone-like instrument for generating in said cellular, or cellular-like, interface unit respective, corresponding responses in said cellular, or cellular-like, interface unit, in order to determine if said cellular, or cellular-like, interface unit is operating correctly.

12. The apparatus according to claim 1, wherein said auto-diagnostic means comprises means for generating an off-hook signal to said cellular, or cellular-like, interface unit.

13. The apparatus according to claim 1, wherein said auto-diagnostic means comprises means for detecting the presence of a dial-tone signal generated from said cellular, or cellular-like, interface unit in response to said generation of said off-hook signal.

14. The apparatus according to claim 1, wherein said auto-diagnostic means comprises means for generating an on-hook signal to said cellular, or cellular-like, interface unit.

15. The apparatus according to claim 1, wherein said auto-diagnostic means comprises means for simulating the presence of an incoming telephone call to said transceiver in order to cause said cellular, or cellular-like, interface unit to actuate its ring generator;

said auto-diagnostic means comprising means for detecting the ring-signal produced thereby.

16. The apparatus according to claim 1, wherein said auto-diagnostic means further comprises means for generating an off-hook signal to said cellular, or cellular-like, interface unit during the time that said cellular, or cellular-like, interface unit is generating its ring-signal, in order to determine that the cellular, or cellular-like, interface unit properly disconnects the ring-signal upon the answering of an incoming telephone call.

17. The apparatus according to claim 1, wherein said auto-diagnostic means comprises means for generating an outgoing telephone call through the cellular, or cellular-like, telephone network, when said cellular, or cellular-like, interface unit is coupled to a transceiver, and back to said cellular, or cellular-like, transceiver, whereby said diagnostic means causes said cellular, or cellular-like, transceiver to make a telephone call to itself;

said auto-diagnostic means further comprising means for detecting the generation of a busy-signal by the cellular, or cellular-like, transceiver in response to said telephone call;

said means for generating an outgoing telephone call calling the telephone number which has been assigned to the transceiver coupled to said cellular, or cellular-like, interface unit.

18. The apparatus according to claim 1, wherein said auto-diagnostic means comprises means for monitoring and reporting the proper functioning of said interface unit to said off-site location by means of said remote-reporting means.

20. The apparatus according to claim 1, wherein said auto-diagnostic means comprises at least one of:

a first means for generating an off-hook signal to said cellular, or cellular-like, interface unit;

second means for detecting the presence of a dial-tone signal generated from said cellular, or cellular-like, interface unit in response to said generation of an off-hook signal;

third means for generating an on-hook signal to said cellular, or cellular-like, interface unit;

fourth means for simulating the signals of an incoming telephone call to said transceiver in order to cause said cellular, or cellular-like, interface unit to actuate its ring generator;

fifth means for detecting the ring-signal produced by said fourth means;

sixth means for generating an outgoing telephone call through the cellular, or cellular-like, telephone network, when said cellular, or cellular-like, interface unit is coupled to a transceiver, and back to said cellular, or cellular-like, transceiver, whereby said diagnostic means causes said cellular, or cellular-like, transceiver to make a telephone call to itself;

seventh means for detecting the generation of a busy-signal by the cellular, or cellular-like, transceiver in response to said sixth means.

19. A method of remotely testing for the proper operation of a cellular, or cellular-like, interface unit by means of a diagnostic unit, which cellular, or cellular-like, interface unit is capable of being coupled to a land-type telephone or telephone-like instrument, said method comprising:

(a) sending a test-initiation signal from an off-site location to the diagnostic unit;

(b) in response to said step (a), carrying out the testing of the cellular, or cellular-like, interface unit by means of the diagnostic unit;

(c) transforming the test-results into data that is capable of being sent over the cellular, or cellular-like, network;

(d) sending the test-results data to an off-site monitoring center by means of the cellular, or cellular-like, transceiver; and

prior to said step (d), generating an acknowledgment signal from the off-site monitoring center to the diagnostic unit indicating establishment of data connection;

said step (b) comprising monitoring the functions performed by said interface unit;

said step of monitoring comprising;

simulating the functions performed by a communications device for generating in said interface unit respective, corresponding responses in said interface unit, in order to determine if said interface unit is operating correctly.