Administrator’s Guide - SoundPoint® IP / SoundStation® IP

Features

3.3.7 Audio Codecs

The following table summarizes the phone’s audio codec support:

 

 

 

 

Sample

 

Effective

 

 

 

 

 

audio band-

Algorithm

MIME Type

Ref.

Bit Rate

Rate

Frame Size

width

 

 

 

 

 

 

 

G.711μ-law

PMCU

RFC

64 Kbps

8 Ksps

10ms - 80ms

3.5KHz

 

 

1890

 

 

 

 

 

 

 

 

 

 

 

G.711a-law

PCMA

RFC

64 Kbps

8 Ksps

10ms - 80ms

3.5KHz

 

 

1890

 

 

 

 

 

 

 

 

 

 

 

G.729AB

G729

RFC

8 Kbps

8 Ksps

10ms - 80ms

3.5KHz

 

 

1890

 

 

 

 

 

 

 

 

 

 

 

SID

CN

RFC

N/A

N/A

N/A

N/A

 

 

3389

 

 

 

 

 

 

 

 

 

 

 

RFC 2833

phone-event

RFC

N/A

N/A

N/A

N/A

 

 

2833

 

 

 

 

 

 

 

 

 

 

 

 

Configuration file:

Specify codec priority, preferred payload sizes, and jitter

Central

sip.cfg

buffer tuning parameters.

 

For more information, refer to:

(boot

 

server)

 

4.6.1.8.1.1 Codec Preferences <preferences/> on

 

 

page 108, and

 

 

4.6.1.8.1.2 Codec Profiles <profiles/> on page 109.

 

 

 

 

Web Server

Specify codec priority, preferred payload sizes, and jitter

 

(if enabled)

buffer tuning parameters.

 

 

Navigate to: http://<phoneIPAddress>/coreConf.htm#au

Local

 

Changes are saved to local flash and backed up to <Ethernet

 

address>-phone.cfg on the boot server. Changes will per-

 

 

manently override global settings unless deleted through the

 

 

Reset Local Config menu selection.

 

 

 

 

Local Phone User

None.

 

Interface

 

 

 

 

Copyright © 2006 Polycom, Inc.

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Polycom 1725-11530-200 Rev A1 Audio Codecs, Following table summarizes the phone’s audio codec support, Sample Effective