Video Codecs - Polycom 1725-11530-310 Administrator's Manual

Video Codecs

Algorithm MIME Type
H.263 H263/90000,
H263-1998/90000
H.264 H264/90000
Central Configuration file:
sip.cfg
(boot server)
Audio Codecs
Algorithm MIME Type
G.711μ-law PMCU
G.711a-law PCMA
G.722 G722/8000
G.722.1 G7221/16000
G.722.1C G7221/
32000
Administrator's Guide Addendum for the Polycom VVX 1500 Business Media Phone
The following table summarizes the Polycom VVX 1500 phone's video codec
support:
Bit Rate
64 kbps to
768 kbps
64 kbps to
768 kbps
Configuration changes can performed centrally at the boot server:
Specify codec priority, payload type and jitter buffer tuning
parameters.
• For more information, refer to
<codecPref/>on page
page 1-13.
The following table summarizes the Polycom VVX 1500 phone's audio codec
support:
Ref. Bit Rate
RFC 1890 64 Kbps
RFC 1890 64 Kbps
RFC 1890 64 Kbps
RFC 3047 16 Kbps,
24 Kbps,
32 Kbps
G7221C 24 Kbps
32 Kbps
48 Kbps
Frame
Rate Frame Size
5 fps to Tx Frame size:CIF,
30 fps QCIF
Rx Frame Size:CIF,
QCIF, SQCIF, QVGA,
SIF
5 fps to Tx Frame size:CIF,
30 fps QCIF
Rx Frame Size:CIF,
QCIF, SQCIF, QVGA,
SIF
Codec Preferences
1-12 and Codec Profiles <codecPref/>
Sample
Rate Frame Size
8 Ksps 10ms - 80ms
8 Ksps 10ms - 80ms
16 Ksps 10ms - 80ms
16 Ksps 20ms - 80ms
32 Ksps 20ms - 80ms
Effective
video
bandwidth
Refer to Bit
Rate column.
Refer to Bit
Rate column.
on
Effective
audio
bandwidth
3.5KHz
3.5KHz
7 KHz
7 KHz
14 KHz
1 - 5