Available Voice Codecs - Patton electronics SmartWare R.3.20 Software Configuration Manual

SmartWare Software Configuration Guide

Available voice codecs

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