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

Page 157
Image 157
Polycom 1500/1800/2000/4000 manual Enabling Support of the w448p Resolution, Content, Packet Loss Compensation, Isdn