Linksys SPA922, SPA962, SPA942, SPA932 manual Audio Configuration Notes

Customizing SPA9x2 Extensions

Audio Configuration Parameters

Audio Configuration Notes

The following tables discusses all audio configuration parameters.

Parameter	Description
Preferred Codec	Preferred codec for all calls. (The actual codec used in a call still
	depends on the outcome of the codec negotiation protocol.) Select
	one of the following: G711u, G711a, G726-16, G726-24, G726-32,
	G726-40, G729a, or G723. See ”Supported Codecs” section on
	page 37.
	Defaults to G711u.
Use Pref Codec Only	To use only the preferred codec for all calls, select yes. (The call fails if
	the far end does not support this codec.) Otherwise, select no.
	Defaults to no.
Second Preferred Codec	If the first codec fails, this codec is tried.
	Defaults to unspecified.
Third Preferred Codec	If the second codec fails, this codec is tried.
	Defaults to unspecified.
G729a Enable	To enable the use of the G.729a codec at 8 kbps, select yes. Otherwise,
	select no.
	Defaults to yes.
G723 Enable	To enable the use of the G.723a codec at 6.3 kbps, select yes.
	Otherwise, select no.
	Defaults to yes.
G726-16 Enable	To enable the use of the G.726 codec at 16 kbps, select yes.
	Otherwise, select no.
	Defaults to yes.
G726-24 Enable	To enable the use of the G.726 codec at 24 kbps, select yes.
	Otherwise, select no.
	Defaults to yes.
G726-32 Enable	To enable the use of the G.726 codec at 32 kbps, select yes.
	Otherwise, select no.
	Defaults to yes.
G726-40 Enable	To enable the use of the G.726 codec at 40 kbps, select yes.
	Otherwise, select no.
	Defaults to yes.
Release Unused Codec	Allows the release of codecs not used after codec negotiation on the
	first call so that other codecs can be used for the second line. To use
	this feature, select yes.
	Defaults to yes.

Linksys SPA9x2 Phone Administration Guide 104