Vanguard Managed Solutions 7300 Series Voice Port Configuration, Dynamic Coder for H.323

Vanguard 7300 Port Configuration

Voice Port Configuration

Introduction	This section describes the H.323 Version 2 features. For more information on H.323
	voice parameters, see the Vanguard Voice Manual (Part Number T0104-05).

	Dynamic Coder for H.323
Description
		H.323 Dynamic Coder lets you configure your 7300 device to ensure that your calls
		are successfully placed. This is done using coder negotiation between other H.323
		devices. This feature is limited to H.323 calls only.

How Does It Work? Using H.323 Dynamic Coder, the Public Switch Telephone Network (PSTN) port on your 7300 device can be configured to allow the H.323 interface to advertise all of its supported coders with a remote H.323 device. This action prompts the H.323 interface to dynamically negotiate, with the remote H.323 device, for a voice compression coder, bundle format, and Voice Activity Detection (VAD) control setting. If necessary, the PSTN port is re-configured to match the negotiated settings.

Supported Voice Compression Coders

The 7300 Series supports these voice compression coders:

•G.723.1

•G.729A

•G.711U

•G.711A

Accessing and

Configuring

Dynamic Coder

When negotiations take place, supported coders are provided in a prioritized list. The highest prioritized coder in the list is the PSTN port configuration. The second highest is the same coder with the opposite VAD setting. Any remaining coders follow in this order: G.723.1, G.729A, G.711U, and G.711A.

Note

If H.323 Dynamic Coder is not enabled, the H.323 interface does not advertise the current configuration (compression rate, bundle format, and VAD setting) and negotiations do not take place. If the remote H.323 device cannot match the PSTN ports configuration, the call is cleared.

Dynamic Coder for H.323 introduces one new parameter under the Port Configuration menu. Use these steps to access the H.323 Dynamic Coder parameter:

1)Select Configure from the main menu.

2)Select Port, type the appropriate port number and press enter.

3)Type voice and press enter.

Figure 4-8shows an example of the Port Configuration Menu and the H.323 Dynamic Coder parameter.

4-14 Operating Your Vanguard 7300