Are 2 Mbps sufficient?

[Simon Hobson]

James Weatherall wrote:

>  > -> 1) reduce the amount of data to be transferred: smaller
>>  screen, less
>>  -> bits/pixel, less frequent updates
>>  Excatly what do you mean for "less frequent updates"? It is
>>  possible to set with
>>  VNC?
>
>VNC will update viewers as frequently as it can, given the available
>bandwidth.  i.e. it will adapt to lower bandwidth connections.

What I was referring to (unclearly it seems), is that if the software 
in use does not change the screen much/very often, then the clients 
will catch up - it just takes longer over a slow link. If the screen 
image is much more dynamic, then the bandwidth requirements will go 
up - and if there isn't enough bandwidth, then the clients will 
simply not get all the updates.

One way to improve the perceived performance is to reduce the 
quantity of screen image changes that have to be transmitted - by 
removing unneccessary things like  animated slide transitions in 
PowerPoint, or fancy background images (that have to be retransmitted 
when they are uncovered etc.

Simon

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Simon Hobson MA MIEE, Technology Specialist
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