System and method for determining network quality for voIP calls
View Patent ↗A method of measuring network quality for VoIP calls comprises setting up a test call from a local IP endpoint to a remote IP endpoint reachable by a logical trunk group associated with the local IP endpoint, receiving statistical data regarding the test call, tearing down the test call, processing the statistical data and generating measurement results, and routing a VoIP call using a route selected based at least in part on the measurement results.
1. A method of automatically routing VoIP calls based on network quality measurements, comprising:
setting up, by a multimedia media gateway controller, a test call from an originating switch of a local media gateway to a terminating switch of a remote media gateway reachable by a logical trunk group associated with the originating switch of a local media gateway;
receiving, by the multimedia media gateway controller, statistical data regarding the test call;
tearing down, by the multimedia media gateway controller, the test call;
processing, by the multimedia media gateway controller, the statistical data and generating, by the multimedia media gateway controller, measurement results;
automatically determining, at the multimedia media gateway controller, a best route for a VoIP call based on the measurement results and routing the VoIP call using the best route;
determining, by the multimedia media gateway controller, whether the measurement results indicate congestion on a path in a network; and
in response to determining that the measurement results indicate congestion on the path, generating, by the multimedia media gateway controller, an alarm so that the path can be avoided.
2. The method of claim 1 , comprising continually repeating the steps.
3. The method of claim 1 , further comprising:
comparing the measurement results to a predetermined threshold;
generating an alarm response to the predetermined threshold being exceeded.
4. The method of claim 1 , further comprising:
comparing the measurement results to a plurality of predetermined thresholds;
generating an alarm in response to any of the predetermined thresholds being exceeded.
5. The method of claim 1 , wherein receiving statistical data comprises receiving RTCP reports.
6. The method of claim 1 , wherein processing the statistical data comprises smoothing the statistical data.
7. The method of claim 1 , wherein receiving statistical data compromises receiving data associated with packet loss, packet delay, and jitter measured during the test call.
8. The method of claim 1 , wherein setting up a test call comprises:
controlling at least one of the local and remote media gateways for:
sending setup signaling from the originating switch of the local media gateway to the terminating switch of the remote media gateway; and
sending setup signaling from the terminating switch of the remote media gateway to the originating switch of the local media gateway.
9. The method of claim 1 , further comprising generating and applying test tones to the test call.
10. A method of measuring network quality, comprising:
setting up, by a multimedia media gateway controller, a test call from an originating switch of a local media gateway to a terminating switch of a remote media gateway;
collecting, by the multimedia media gateway controller, packet delivery statistical data of the test call;
tearing down, by the multimedia media gateway controller, the test call;
filtering, by the multimedia media gateway controller, the statistical data and generating network condition measurement results;
exporting, by the multimedia media gateway controller, the network condition measurement results;
by the multimedia media gateway controller, routing a VoIP call using a route selected based at least in part on the network condition measurement results;
determining, by the multimedia media gateway controller, whether the measurement results indicate congestion on a path in a network; and
in response to determining that the measurement results indicate congestion on the path, generating, by the multimedia media gateway controller, an alarm so that the path can be avoided.
11. The method of claim 10 , comprising continually repeating the steps.
12. The method of claim 10 , further comprising:
comparing the network condition measurement results to at least one predetermined threshold; and
generating an alarm in response to the at least one predetermined threshold being exceeded.
13. The method of claim 10 , wherein filtering statistical data comprises smoothing the statistical data.
14. The method of claim 10 , wherein setting up a test call comprises:
controlling at least one of the local and remote media gateways for:
sending setup signaling from the originating switch of the local media gateway to the terminating switch of the remote media gateway; and
sending setup signaling from the terminating switch of the remote media gateway to the originating switch of the local media gateway.
15. The method of claim 10 , further comprising generating bearer traffic for the test call.
16. The method of claim 10 , wherein receiving packet delivery statistical data comprises receiving RTCP reports.
17. The method of claim 10 , further comprising generating a routing list based at least in part on the network condition measurement results.
18. A system comprising:
a test call generator in a multimedia gateway controller for setting up a test call from an originating switch of a local media gateway to a terminating switch of a remote media gateway;
in the local media gateway, generating bearer traffic for the test call;
a measurement component in the multimedia gateway controller for collecting and receiving statistical data associated with the test call;
in the multimedia gateway controller, processing the statistical data and generating measurement results;
a routing component in the multimedia media gateway controller for determining a best route for a VoIP call based on the measurement results and routing the VoIP call using the best route;
in the multimedia media gateway controller, determining whether the measurement results indicate congestion on a path in a network; and
in the multimedia media gateway controller, in response to determining that the measurement results indicate congestion on the path, generating an alarm so that the path can be avoided.
19. A system for measuring IP network quality, the system comprising:
a multimedia media gateway controller including:
a test call generator, in the multimedia media gateway controller, operable to set up a test call from an originating switch of a local media gateway to a terminating switch of a remote media gateway, and to control at least one of the media gateways to generate bearer traffic for the test call;
a measurement component, in the multimedia media gateway controller, operable to collect and receive statistical data associated with the test call;
a post-processing component, in the multimedia media gateway controller, coupled to the measurement module operable to filter the statistical test call data; and
a routing engine in the multimedia media gateway controller for using the statistical test call data to route a VoIP call, wherein the multimedia media gateway controller is configured to determine whether the measurement results indicate congestion on a path in a network, and, in response to determining that the measurement results indicate congestion on the path, to generate an alarm so that the path can be avoided.
20. The system of claim 19 , further comprising a data export module coupled to the post-processing module and configured to export the filtered statistical test call data in a predetermined format.