Dynamic communication line analyzer apparatus and method

• US 5,805,571 A
• Filed: 03/19/1996
• Issued: 09/08/1998
• Est. Priority Date: 03/19/1996
• Status: Expired due to Fees

• Current Assignee: Digital Lightwave Incorporated
• Original Assignee: Digital Lightwave Incorporated
• Inventors: Myers, Kenneth T., Zwan, Bryan J.
• Primary Examiner(s): Olms, Douglas W.
• Assistant Examiner(s): PHILLIPS, MATTHEW
• Application Number:
  US08/619,847
• Time in Patent Office: 903 Days
• Field of Search: 370/241-250, 371/20.1-20.5, 379/1, 379/4, 379/5, 379/21, 379/22, 379/23, 379/26, 379/27, 379/28
• US Class Current: 370/249
• CPC Class Codes: H04J 2203/0003 Switching fabrics, e.g. transport network, control network
• CPC Class Codes: H04J 2203/0062 Testing
• CPC Class Codes: H04J 3/14 Monitoring arrangements for SDH/SONET rings H04J3/085
• CPC Class Codes: H04L 1/24 Testing correct operation
• CPC Class Codes: H04L 2012/5628 Testing
• CPC Class Codes: H04L 49/104 Asynchronous transfer mode [ATM] switching fabrics
• CPC Class Codes: H04Q 11/0478 Provisions for broadband connections

Abstract

A novel high speed telecommunications testing apparatus and method which utilizes field programmable gate arrays to produce dynamic test modules for DS1, DS3, SONET and ATM signals interconnected by a high speed switching fabric. The high speed switch permits the direct exchange of signals from one test module to another thereby permitting simultaneous testing of different communications line protocols and further provides for multiple tests on a single data stream. Individual line interfaces are provided for DS1, DS3, and SONET lines which terminate and frame incoming and outgoing signals. Data exchange between modules in accomplished through the high speed switch fabric.

Claims

1. A method of testing a communications device comprising:

generating a first protocol signal and supplying said first protocol signal to said communications device;

receiving a second protocol signal from said communications device containing said first protocol signal embedded therein;

extracting said embedded first protocol signal from said second protocol signal;

comparing said embedded first protocol signal to the original first protocol signal to determine communications device performance.

2. The method of testing a communications device according to claim 1, wherein said first protocol signal is a DS1 signal.

3. The method of testing a communications device according to claim 1, wherein said first protocol signal is a DS3 signal.

4. The method of testing a communications device according to claim 1, wherein said second protocol signal is a SONET signal.

5. The method of testing a communications device according to claim 1, wherein said second protocol signal is a DS3 signal.

6. A method of testing a communications device comprising:

generating a first protocol signal and embedding said first protocol signal in a second protocol signal;

supplying said second protocol signal to said communications device;

receiving a third protocol signal from said communications device;

comparing said third protocol signal with said first protocol signal determine communications device performance.

7. The method of testing a communications device according to claim 6, wherein said first protocol signal is a DS1 signal.

8. The method of testing a communications device according to claim 6, wherein said first protocol signal is a DS3 signal.

9. The method of testing a communications device according to claim 6, wherein said second protocol signal is a SONET signal.

10. The method of testing a communications device according to claim 6, wherein said second protocol signal is a DS3 signal.

11. A method of testing a communications device comprising:

generating a first protocol signal and embedding said first protocol signal in a second protocol signal;

generating a third protocol signal;

supplying said second protocol signal and said third protocol signal to said communications device;

receiving a fourth protocol signal from said communications device;

extracting said second protocol signal and said third protocol signal from said fourth protocol signal to determine communications device performance.