Patton electronic SmartNode 4110 Series manual Available voice codecs

SmartWare Software Configuration GuideE • Used IP ports & available voice codecs

Available voice codecs

				Used Band-
		Net Band-	Min.	width per
Protocol	Codec	width per	Compression	Call (kbps,	Usage
		Call (kbps)	Delay (ms)	incl. IP
				header)
H.323	G.711 A-law	64	10	96	Uncompressed, best voice qual-
& SIP					ity, European audio-digitizing
	G.711 U-law	64	10	96	Uncompressed, best voice qual-
					ity, American audio-digitizing
	G.723.1	6.3	30	17	Good voice quality at lowest
					bandwidth, like analog phone,
					acceptable delay
	G.729/	8	10	40	Best relationship between voice
	G.729a				quality and used bandwidth,
					low delay
	Transparent	64	10	96	Transparent ISDN data, no
					echo cancellation
	G.726	16, 24, 32, 40	20	32, 40, 48, 56	The G.726 is an ADPCM based
					codec, with small memory foot-
					print but fairly high CPU time
					requirements. Also available in
					Cisco compatible mode.
	G.727	16, 24, 32	20	32, 40, 48	Embedded ADPCM. See also
					G.726.
	T.38		Variable		This is a fax codec, not a
					voice codec.

Available voice codecs 664