Polycom 1725-11530-310 Manual De Usuario

 Configuring Your System

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packets (also known as Silence Insertion Descriptor (SID) frames) and also 

decodes CN packets, efficiently regenerating a facsimile of the background 

noise at the remote end.
Configuration changes can performed centrally at the boot server:

The phone generates dual tone multi-frequency (DTMF) tones in response to 

user dialing on the dial pad. These tones are transmitted in the real-time 

transport protocol (RTP) streams of connected calls. The phone can encode the 

DTMF tones using the active voice codec or using RFC 2833 compatible 

encoding. The coding format decision is based on the capabilities of the remote 

end point.
Configuration changes can performed centrally at the boot server:

The phone is compatible with RFC 2833 - RTP Payload for DTMF Digits, 

Telephony Tones, and Telephony Signals. RFC 2833 describes a standard 

RTP-compatible technique for conveying DTMF dialing and other telephony 

events over an RTP media stream. The phone generates RFC 2833 (DTMF 

only) events but does not regenerate, nor otherwise use, DTMF events 

received from the remote end of the call.
Configuration changes can performed centrally at the boot server:

The phone employs advanced acoustic echo cancellation (AEC) for hands-free 

operation. Both linear and non-linear techniques are employed to aggressively 

reduce echo yet provide for natural full-duplex communication patterns.

Configuration file:  
sip.cfg

Enable or disable VAD and set the detection threshold. 

For more information, refer to 

 on 

page 

.

Configuration file: 
sip.cfg

Set the DTMF tone levels, autodialing on and off times, and other 
parameters.

For more information, refer to 

 on page 

Configuration file: 
sip.cfg

Enable or disable RFC 2833 support in SDP offers and specify the 
payload value to use in SDP offers.

For more information, refer to 

 on page