Video codecs, Audio codecs – Polycom SoundPoint IP 601 User Manual
Page 352

Administrator’s Guide Addendum for the Polycom VVX 1500 Business Media Phone
1 - 5
Video Codecs
The following table summarizes the Polycom VVX 1500 phone’s video codec
support:
Configuration changes can performed centrally at the boot server:
Audio Codecs
The following table summarizes the Polycom VVX 1500 phone’s audio codec
support:
Algorithm
MIME Type
Bit Rate
Frame
Rate
Frame Size
Effective
video
bandwidth
H.263
H263/90000,
H263-1998/90000
64 kbps to
768 kbps
5 fps to
30 fps
Tx Frame size:CIF,
QCIF
Rx Frame Size:CIF,
QCIF, SQCIF, QVGA,
SIF
Refer to Bit
Rate column.
H.264
H264/90000
64 kbps to
768 kbps
5 fps to
30 fps
Tx Frame size:CIF,
QCIF
Rx Frame Size:CIF,
QCIF, SQCIF, QVGA,
SIF
Refer to Bit
Rate column.
Central
(boot server)
Configuration file:
sip.cfg
Specify codec priority, payload type and jitter buffer tuning
parameters.
•
For more information, refer to
on page
on
page
Algorithm
MIME Type
Ref.
Bit Rate
Sample
Rate
Frame Size
Effective
audio
bandwidth
G.711
μ-law
PMCU
RFC 1890
64 Kbps
8 Ksps
10ms - 80ms
3.5KHz
G.711a-law
PCMA
RFC 1890
64 Kbps
8 Ksps
10ms - 80ms
3.5KHz
G.722
G722/8000
RFC 1890
64 Kbps
16 Ksps
10ms - 80ms
7 KHz
G.722.1
G7221/16000
RFC 3047
16 Kbps,
24 Kbps,
32 Kbps
16 Ksps
20ms - 80ms
7 KHz
G.722.1C
G7221/
32000
G7221C
24 Kbps
32 Kbps
48 Kbps
32 Ksps
20ms - 80ms
14 KHz