Pelco C1977M-D manual Configuration Default Description Settings

The table below details available configuration items.

		Table D. Audio Settings
Configuration	Default	Description
Item	Settings
Audio interface	Line I/O	The unit features two different audio interfaces: line input
		and output via cinch sockets and a telephone handset inter-
		face via an RJ-11 plug. The handset interface also features
		DC power for the microphone. Only one of the interfaces is
		active at any given time, as selected by this setting.
Input level	25%	The sensitivity of the input needs to be adapted to the
		level of the audio source to avoid oversteering and the re-
		sulting distortions. Experiment for the best setting.
Output level	12%	Adapt the output level to the requirements of connected
		audio equipment.
Coding mode	off	The audio function is switched on by selecting any of the
		two different coding algorithms, G.711 or G.728. The
		tradeoff is given on the web page: G.711 is the preferred
		operation if bandwidth is not a concern. G.728 greatly im-
		proves efficiency at a somewhat reduced audio quality.

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