Audio Codecs - Polycom IP 320 Administrator's Manual

Administrator's Guide for the SoundPoint IP / SoundStation IP / VVX Family

Audio Codecs

Phone
SoundPoint IP 430
SoundPoint IP 320/321/330/331
SoundPoint IP 335, 450, 550, 560, 650, and 670
SoundStation IP 6000
SoundStation IP 7000
Polycom VVX 1500
Algorithm MIME Type
G.711μ-law PMCU
G.711a-law PCMA
G.719 G719/48000
G.722 G722/8000
G.722.1 G7221/16000
G.722.1C G7221/
32000
G.729AB G729
SID CN
4 - 80
For more information, refer to
A-44, Acoustic Echo Suppression <aes/>
Noise Suppression <ns/>
The following table shows which audio codecs are support by each of the
SoundPoint IP, SoundStation IP, and Polycom VVX phones:
The following table summarizes the supported audio codecs:
Ref. Bit Rate
RFC 1890 64 Kbps
RFC 1890 64 Kbps
RFC 5404 32 Kbps,
48 Kbps,
64 Kbps
RFC 1890 64 Kbps
RFC 3047 16 Kbps,
24 Kbps,
32 Kbps
G7221C 24 Kbps
32 Kbps
48 Kbps
RFC 1890 8 Kbps
RFC 3389 N/A
Acoustic Echo Cancellation <aec/>
on page A-55, and
on page A-56.
Supported Audio Codecs
G.711μ-law, G.711a-law, G.729AB
G.711μ-law, G.711a-law, G.729AB, iLBC
G.711μ-law, G.711a-law, G.722, G.729AB, iLBC
G.711μ-law, G.711a-law, G.722, G.722.1, G.722.1C,
G.729AB, Siren14, iLBC
G.711μ-law, G.711a-law, G.722, G.722.1, G.722.1C,
G.729AB, Lin16, Siren14, Siren22, iLBC
G.711μ-law, G.711a-law, G.719, G.722, G.722.1,
G.722.1C, G.729AB, Lin16, Siren14, iLBC
Sample
Rate Frame Size
8 Ksps 10ms - 80ms
8 Ksps 10ms - 80ms
48 kHz 20ms
16 Ksps 10ms - 80ms
16 Ksps 20ms - 80ms
32 Ksps 20ms - 80ms
8 Ksps 10ms - 80ms
N/A N/A
on page
Background
Effective
audio
bandwidth
3.5KHz
3.5KHz
20kHz
7 KHz
7 KHz
14 KHz
3.5KHz
N/A