Bandwidth requirement for PolyCom ViewStation SP128

Posted on 2009-04-19
Last Modified: 2012-05-06
I'm looking for a PolyCom model - PolyCOm ViewStation SP128.
The Video resolution is FCIF, wich support 352 x 288. If it project to a normal PAL TV (720x576), does it mean the image will be distorted ?

How will the bandwdith related to vide resolution on a 384kbps / 764kbps ? Can I say under FCIF resolution, both will achieve the same resolution and the difference is related only to time of refresh the image ?

Can anyone tell me what kinds of video quality under a 384kbps bandwidth ?
Question by:AXISHK

    Author Comment

    Please post to Networking --> Networking management / Teelcommunication.

    LVL 57

    Expert Comment

    It has been years since we used one of these, but IIRC they are designed to run on as little as 128Kbps.  If you are doing H.323 it can support speeds up to 768Kbps.

    The biggest issue we had was not really the bandwidth, but with jitter and packet loss.

    We only had 128Kbps dedicated to it and as long as the jitter was not that bad it was O.K.  I don't remember any distortion.

    Author Comment

    Could you tell me something more about the resolution of the video ? I have seen the specification of FCIF, which support 353 x 288 pixel. My feeling is if it project to a 32" LCD, the image should not be too good, correct ?

    LVL 57

    Accepted Solution

    Um, we had a 32" tube television, LCD televisions weren't around then.

    I would expect that on a LCD that large it would not look too good, but you don't know until you try.

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