H.248/megaco – EXFO EXpert VoIP Test Tools User Manual

Page 24

Selecting and Starting a Test

EXpert VoIP Test Tools

H.248/Megaco

H.248/Megaco

The H.248, the Media Gateway Control Protocol, is designed for distributed
media gateway systems in which one or more centralized gateway
controllers (Call Agents) control one or more media gateways.

The VoIP H.248 test measures the performance of the services of H.248
based VoIP networks. It either initiates a call to or answers a call from other
endpoints based on a telephone number. Performance is measured for
both the call signaling path (H.248 signaling) and the media path
(RTP/RTCP). Each set of measurements is performed during a test cycle. A
test cycle consists of the initiation and termination of a single, bi-directional
RTP audio session between the test set and a third-party device.

To select, configure, and start a H.248/Megaco Test:
1. From the Main Menu, tap H.248/Megaco.

2. From the Interface tab, configure the test interface parameters. See

Interface on page 20. Ensure that the link is up in the status bar before
proceeding to the next step.

3. From the Configuration tab, configure the H.248/Megaco test. See

Configuration (H.248/Megaco) on page 39.

4. From the Parameters tab, configure the local parameters. See

Parameters (H.248/Megaco) on page 51.

5. From the Threshold tab, enable and configure the threshold values.

See Threshold on page 52.

6. Press Start to start the test.

7. For results, refer to Summary (H.248/Megaco) on page 71, Call Quality

Details on page 62, and Call Manager Statistics (H.248/Megaco) on
page 56.