Polycom 3725-22370-001/B Manual De Usuario

The QSX 2.0 offers a number of bandwidth options that allow you to optimize its use for 
your particular environment.  The flowchart below is designed to serve as a guide for 
making the proper bandwidth configurations.   
 
This flowchart assumes that you are starting with an idea of how you want to use the 
QSX (e.g.- in a Stand Alone mode to share content with web viewers only or in a mixed 
environment with other QSX units and web viewers).  It also assumes you have a general 
idea of the bandwidth that you have available.  Based on that information, you can use 
this chart to determine the performance with various numbers of participants and what 
settings you need to configure on the Web Admin page of the QSX. 
 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 
 

1920 Kbps

384 Kbps

1920 Kbps

512 Kbps

# of web viewers          1          5          10

Transition Time (sec)  1-3      3-5       6-8

# of web viewers          1          5          10

Transition Time (sec)  3-7      7-16       7-22

# of web viewers          1          5          10

Transition Time (sec)  1-3       2-6         6-8

# of QSX units             1          2           4

Transition Time (s)    0.25     0.25

0.25

Bandwidth Sharing Mode:

Max Average Tx:

1920

Max Average Rx:

1920

Bandwidth Sharing Mode:

Max Average Tx:

512

Max Average Rx:

512

Bandwidth Sharing Mode:

Max Average Tx:

384

Max Average Rx:

1024

Bandwidth Sharing Mode:

Max Average Tx:                         1024

Max Average Rx:

1024

# of web viewers          1          5

Transition Time (sec)  3-5       6-15

# of QSX units             1          2           4

Transition Time (s)   0.25      0.25

0.25

512 Kbps

# of web viewers          1          5          10

Transition Time (sec)  3-5        7           12

Bandwidth Sharing Mode:

Max Average Tx:

512

Max Average Rx:

512

Bandwidth Sharing Mode:

Max Average Tx:                         1024

Max Average Rx:

1024

# of web viewers          1          5          10

Transition Time (sec)  1-3      3-5       6-8

1920 Kbps

 
Note: In the above diagram, “Transition Speed” is the average number of seconds it takes 
for a new image to refresh on a meeting participant’s screen.  These times are all 
approximate.  Actual times are based on actual bandwidth and amount of network traffic. 
This chart was based on a PC input resolution to the QSX of 1024x768. The QSX was 
configured for no scaling (1024x768) for H.323 connections and 800x600 for web 
viewers. 

>5 web 
viewers not 
recommended 
at this 
bandwidth

384 Kbps

1920 Kbps

512 Kbps

# of web viewers          1          5          10

Transition Time (sec)  3-7      7-16       7-22

# of web viewers          1          5          10

Transition Time (sec)  1-3       2-6         6-8

# of QSX units             1          2           4

Transition Time (s)    0.25     0.25

0.25

Bandwidth Sharing Mode:

Max Average Tx:

1920

Max Average Rx:

1920

Bandwidth Sharing Mode:

Max Average Tx:

512

Max Average Rx:

512

Bandwidth Sharing Mode:

Max Average Tx:

384

Max Average Rx:

1024

# of web viewers          1          5

Transition Time (sec)  3-5       6-15

# of QSX units             1          2           4

Transition Time (s)   0.25      0.25

0.25

Bandwidth Sharing Mode:

Max Average Tx:

512

Max Average Rx:

512

# of web viewers          1          5          10

Transition Time (sec)  3-5        7           12

512 Kbps

>5 web 
viewers not 
recommended 
at this 
bandwidth

 

52