Introduction
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Introduct
ion
Packet Voice Processor Commands Manual
1.4 Media
Processing
The Packet Voice Processor performs the following media processes:
Voice codec Transcoding
Voice quality enhancement using VQA and IPR technologies.
The Packet Voice Processor supports the process of decoding and encoding of voice
streams, which is used to enable voice codec transcoding and voice quality
enhancement.
VQA technology improves the quality of the voice in a call and offers noise reduction,
enhanced voice intelligibility, voice level control, and acoustic echo cancellation
capabilities. IPR technology addresses quality issues specific to IP transport, such
as packet loss, delay, and jitter.
displays a schematic of a possible Packet Voice Processor deployment
within an IP network, as well as how the VQA and IPR technologies would improve
the call.
Figure 1-7 PVP Deployment with VQA and IPR Technology
Media processing is performed on the Media Processing cards. These cards support
a 1:N redundancy and can be hot-swapped during live operations without affecting
media traffic.
Go To
For additional detailed information about the Media Processing cards and other
Packet Voice Processor system components, refer to the
Packet Voice Processor
Hardware Manual
as listed on
IP
Network
Quality Impairments
Removed From Call
Residential
CPE
VoIP Adapter
Phone
PVP
Media
Gateway
IP Router
Enterprise
SIP
Phone
SIP
Phone
Residential
POTS Phone
Class 5 Switch
PVP
Level Mismatch
Background Noise
Acoustic echo
Packet Loss and Delay
Level Mismatch
Background Noise
Acoustic and Hybrid echo
Packet Loss and Delay
Содержание Packet Voice Processor
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