Polycom SIP 3.0.2 Administrator's Manual page 269

Single Registration
Audio Codecs
Algorithm
G.722.1C
Lin16
Siren14
Siren22
Note
Configuration file:
Central
sip.cfg
(boot server)
The SoundStation IP 7000 phone supports a single registration.
When the phone is unable to register with the call control server, the icon
is shown (outline). Once the phone is able to register, the icon
shown (solid).
The following table summarizes the SoundStation IP 7000 phone's new audio
codec support:
MIME Type Bit Rate
G7221/ 24 Kbps
32000 32 Kbps
48 Kbps
L16/16000 25.6 Kbps
L16/32000 51.2 Kbps
L16/48000 76.8 Kbps
SIREN14/ 24 Kbps
16000 32 Kbps
48 Kbps
SIREN22/ 32 Kbps
48000 48 Kbps
64 Kbps
The network bandwidth necessary to send the encoded voice is typically 5-10%
(confirm number) higher than the encoded bit rate due to packetization overhead.
For example, a G.722.1C call at 48kbps consumes 5xkbps of network bandwidth.
Configuration changes can performed centrally at the boot server:
Specify codec priority, preferred payload sizes, and jitter buffer tuning
parameters.
For more information, refer to
•
on page
Administrator's Guide Addendum for the SoundStation IP 7000
Sample
Rate Frame Size
32 Ksps 20ms - 80ms
16 Ksps 10ms
32 Ksps
48 Ksps
32 Ksps 20ms - 80ms
32 Ksps 20ms - 80ms
Codec Preferences <codecPref/>
1-8 and Codec Profiles <audioProfile/>
is
Effective
audio
bandwidth
14 KHz
7 KHz
14 KHz
22 KHz
14 KHz
14 KHz
on page 1-9.
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