Polycom 1725-11530-310 사용자 설명서

 Configuring Your System

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Configuration changes can performed centrally at the boot server or locally:

Background noise suppression (BNS) is designed primarily for hands-free 

operation and reduces background noise to enhance communication in noisy 

environments.
There are no related configuration changes.

Comfort noise fill is designed to help provide a consistent noise level to the 

remote user of a hands-free call. Fluctuations in perceived background noise 

levels are an undesirable side effect of the non-linear component of most AEC 

Siren14

SIREN14/
16000

SIREN14

24 Kbps
32 Kbps
48 Kbps

32 Ksps

20ms - 80ms

14 KHz

Siren22

SIREN22/
48000

SIREN22

32 Kbps
48 Kbps
64 Kbps

32 Ksps

20ms - 80ms

14 KHz

RFC 2833

phone-event

RFC 2833

N/A

N/A

N/A

N/A

The network bandwidth necessary to send the encoded voice is typically 5-10% 
higher than the encoded bit rate due to packetization overhead. For example, a 
G.722.1C call at 48kbps consumes 5xkbps of network bandwidth (one-way audio). 
Two-way audio would take over 100kbps.

Configuration file: 
sip.cfg

Specify codec priority, preferred payload sizes, and jitter buffer tuning 
parameters.

For more information, refer to 

 

on page 

 and 

 on page 

Web Server

(if enabled)

Specify codec priority, preferred payload sizes, and jitter buffer tuning 
parameters.

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

Changes are saved to local flash and backed up to <Ethernet 
address>-phone.cfg on the boot server. Changes will permanently 
override global settings unless deleted through the Reset Local 
Config menu selection and the <Ethernet address>-phone.cfg is 
removed from the boot server.