Proactive quality assessment of voice over IP calls systems

• US 20080175228A1
• Filed: 01/24/2007
• Published: 07/24/2008
• Est. Priority Date: 01/24/2007
• Status: Abandoned Application

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Zhao, Xi, Sherburne, Philip F., Lambert, Henry W., Chang, Shisen
• Application Number:
  US11/657,331
• Publication Number:
  US 20080175228A1
• Time in Patent Office: Days
• US Class Current: 370/352
• CPC Class Codes: H04L 65/1056 Multi-site
• CPC Class Codes: H04M 3/2236 Quality of speech transmission monitoring

Abstract

In one embodiment, a system includes a database that stores administrative information of an Internet protocol private branch exchange (IP-PBX). The administrative information correlates to a geographic configuration of endpoint devices connected via low bandwidth network links. A node is operable to access the database in order to retrieve and analyze the administrative information. Following the analysis, the node generates a test call pattern that is limited to test calls between the endpoint devices connected across the low bandwidth network links. The node is further operable to place the test calls of the test call pattern and acquire voice quality information therefrom. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure.

Claims

1. A method comprising:

(a) accessing administrative information stored in a database associated with an Internet protocol private branch exchange (IP-PBX), the administrative information correlating to a geographic configuration of end-user telephone devices connected via one or more network connections susceptible to voice quality problems;

(b) generating a test call pattern based on the administrative information, the test call pattern including a set of test calls between the end-user telephone devices connected across the one or more network connections;

(c) placing the test calls; and

(d) acquiring voice quality information from the test calls.

2. The method of claim 1 wherein the administrative information comprises call-admission-control related information or codec-filter related information.

3. The method of claim 1 wherein the administrative information comprises a plurality of site names.

4. The method of claim 1 wherein the administrative information comprises a plurality of sub-networks.

5. The method of claim 1 wherein the administrative information comprises a network topology.

6. The method of claim 1 wherein a first set of the end-user telephone devices is associated with a first local area network (LAN), and a second set of the end-user telephone devices is associated with a second LAN.

7. The method of claim 1 further comprising (e) notifying an administrator when the voice quality information includes data indicating that one of the test calls fails to meet a minimum speech quality assessment level.

8. The method of claim 7 further comprising periodically repeating (c)-(e).

9. Logic encoded in one or more media for execution and when executed is operable to:

retrieve administrative information associated with an Internet protocol private branch exchange (IP-PBX) from a database, the administrative information correlating to a geographic configuration of endpoint devices connected via one or more network connections susceptible to voice quality problems;

generate a test call pattern based on an analysis of the administrative information, the test call pattern being limited to test calls between the endpoint devices connected across the one or more network connections; and

place the test calls of the test call pattern; and

acquire voice quality information from the test calls.

10. The logic of claim 9 wherein the logic, when executed, is further operable to store the voice quality information.

11. The logic of claim 9 wherein the logic, when executed, is further operable to notify an administrator when the voice quality information includes data indicating that one of the test calls fails to meet a minimum speech quality assessment level.

12. The logic of claim 11 wherein the data comprises a voice quality score.

13. The logic of claim 11 wherein the voice quality information is acquired in real-time from a call processing component associated with the IP-PBX.

14. The logic of claim 9 wherein the test calls are placed with a certain frequency.

15. The logic of claim 9 wherein the test call pattern comprises a fully meshed call pattern.

16. A system comprising:

a database that stores administrative information of an Internet protocol private branch exchange (IP-PBX), the administrative information correlating to a geographic configuration of endpoint devices connected via one or more network connections susceptible to voice quality problems; and

a node operable to access the database to retrieve and analyze the administrative information to generate a test call pattern that is limited to test calls between the endpoint devices, the node being further operable to instruct the test calls of the test call pattern and acquire voice quality information therefrom.

17. The system of claim 16 wherein the node is further operable to automatically notify an administrator when the voice quality information includes data indicating that one of the test calls fails to meet a minimum speech quality assessment level.

18. The system of claim 16 wherein the node is further operable to automatically increase or decrease a volume of the test calls in response to a current load of the IP-PBX.

19. The system of claim 16 wherein the administrative information comprises call-admission-control related information or codec-filter related information.

20. The system of claim 16 wherein the administrative information comprises a plurality of site names.

21. The system of claim 16 wherein the administrative information comprises a plurality of sub-networks.

22. The system of claim 16 wherein the administrative information comprises a network topology.

23. The system of claim 16 wherein the node comprises the IP-PBX.

24. A system comprising:

a database to store administrative information of an Internet protocol private branch exchange (IP-PBX), the administrative information correlating to a geographic configuration of endpoint devices connected via one or more network connections susceptible to voice quality problems; and

means for accessing the database to retrieve and analyze the administrative information, the means also for placing test calls based on the administrative information, the test calls being limited to a full mesh coverage of the endpoint devices connected across the one or more network connections, the means also for acquiring voice quality information from the test calls and notifying an administrator when the voice quality information includes data indicating that one or more of the test calls fails to meet a minimum speech quality assessment level.