Polycom VIEWSTATION EX manual h331audiomode, Description, g728, g711u, g711a, g722-56, g722-48

ViewStation EX, ViewStation FX, and VS4000 API Guide

h331audiomode

h331audiomode <g728g711ug711ag722-56 g722-48offget>

Description

This command sets the H.331 audio protocol for transmitting audio in broadcast mode. Broadcast configuration parameters should be set to accommodate the lowest common denominator of the systems which are receiving the broadcast.

g728	ITU-T Recommendation for audio encoding using Low
	Delay Code Excited Linear Prediction (CELP). The
	bandwidth of the analog audio signal is 3.4 kHz
	whereas after coding and compression the digitized
	signal requires a bandwidth of 16 Kbps.
g711u	CCITT (now called ITU-T, which is International
	Telecommunications Union's Telecommunications
	Standardization Sector) Recommendation entitled
	"Pulse Code Modulation (PCM) of Voice Frequencies."
	G.711 defines how a 3.1 kHz audio signal is encoded at
	64 Kbps using PCM and either mu-law (US and Japan)
	or A-law (Europe).
g711a	Same as g711u, but uses A-law (Europe).
g722-56	CCITT Recommendation that defines how a 7.5 kHz
	audio signal is encoded at a data rate of 64 Kbps.
g722-48	CCITT Recommendation that defines how a 7.5 kHz
	audio signal is encoded at a data rate of 64 Kbps.
off	Turns the audio mode off.
get	Displays the current setting for this option.

Example h331audiomode g728

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