Polycom EDOC2501b Manual De Usuario

Some of the advantages of SVC conferencing are:
•

Offers high-resolution video conferencing with low end-to-end latency, improved error 

resiliency and higher system capacities.

•

Allows the SVC-enabled video endpoints to manage display layouts, support multiple 

resolutions and data rates. SVC provides simulcasting at different resolutions with 

more layout building options on the endpoint. Flexible in-stream selection to 

accommodate various endpoint capabilities such as bandwidth, CPU, screen resolution, 

and so forth.

•

The RealPresence Collaboration Server functions as a media relay server providing low 

cost production benefits. The RealPresence Collaboration Server reduces bandwidth 

usage by only selecting the necessary video stream to be sent to the endpoints.

Using SVC-Enabled Endpoints in a Mixed AVC and SVC 
Conference

A transcoded CP (Continuous Presence) conference is also described as an AVC (Advanced 

Video Coding) conference. All endpoints that do not support the H.264 SVC protocol such 

as H.263, H.264, or RTV, are considered AVC endpoints.
The RealPresence Collaboration Server 800s - Virtual Edition, the industry’s first multi-

protocol, integrated software MCU that runs on industry-standard servers, can manage a 

mixed SVC and AVC-based conference. This type of conference enables participants with 

SVC-enabled endpoints and AVC endpoints to participate in the same conference.
SVC endpoints transmit multiple resolutions and temporal layers to the Collaboration 

Server like the SVC-based conferences, while AVC endpoints send only one H.264 AVC 

video stream to the Collaboration Server. The Collaboration Server relays SVC-decoded 

video bit streams to the SVC-enabled endpoints in the conference according to their display 

capabilities. This enables the video conference layouts to be automatically assembled by the 

endpoint. AVC endpoints connected to the conference send a single H.264 AVC video bit 

stream to the Collaboration Server, which is then transcoded to SVC video streams. SVC-

enabled endpoints receive the AVC converted video bit streams through the Collaboration 

Server from the AVC endpoints as a single SVC video bit stream. Alternatively, AVC 

endpoints receive a single video bit stream with the defined video conference layout from 
the Collaboration Server. In this mixed mode conferencing, all AVC endpoints receive the 

same CP video layout as an AVC Only conference, but SVC endpoints receive the same 

video layout configuration as an SVC Only conference.