Polycom 1500/1800/2000/4000 manual Enabling Support of the w448p Resolution, Content, Isdn

Video Protocols and Resolution Configuration for CP Conferencing

Video Output to Tandberg Endpoints - Aspect Ratio 4:3

					Frame		Frame
	Video Quality			Resolution	Rate	Resolution	Rate
			Line		fps		fps
Network		Collaboration		Tandberg to		Collaboration Server
			Rate
Environment	Tandberg	Server	Kbps	Collaboration Server		to Tandberg
H.323	Motion	Sharpness	384	576x448 ‡	25	768x448	25
SIP
			512	576x448 ‡	25	768x448	25
ISDN
H.323	Sharpness*	Sharpness	384	4CIF	15	768x448	25
SIP
			512	4CIF	15	768x448	25
ISDN

*It is recommend to set the endpoint to Motion to ensure the transmission of the higher frame rates of 25fps/30fps to the Collaboration Server.

‡MXP 990/3000 endpoints transmit 576x448 pixels. Other MXP endpoints may transmit other resolutions eg. CIF.

Content

Sharing and receiving Content is supported.

Bandwidth allocated to the Content channel during Content sharing may cause the video resolution to be decreased as from w448p to w288p.

When Content sharing stops and the full bandwidth becomes available, video resumes at the previous w448p resolution.

For more information see the Additional Conferencing Information.

Packet Loss Compensation

If there is Packet Loss in the network and Dynamic Bandwidth Allocation (DBA) is activated, allocating bandwidth for Lost Packet Recovery, video resolution decreases from w448p to w288p.

When Packet Loss ceases and DBA no longer needs to allocate bandwidth for Lost Packet Recovery, the full bandwidth becomes available and video resumes at the previous w448p resolution.

For more information see the Packet Loss Compensation - LPR and DBA.

Enabling Support of the w448p Resolution

w448p resolution support for Tandberg endpoints requires setting of the following entities:

●Tandberg endpoint

●Collaboration Server flags

●Collaboration Server Conference Profile

Polycom®, Inc. 126