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

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Patton electronic SmartNode 4110 Series manual Available voice codecs