From: Abdul Waheed Ghaffar (a_w_ghaffar@hotmail.com)
Date: Sat Oct 18 2003 - 02:32:07 GMT-3
Dear ,
There is a QOS setting in the network but i dont think it will help you
much.If it was working ok with ISDN then most probably the setting with
Polycom ( PIC TEL) is OK....I think you better check your router and switch
configuration..if you can send the configurations that may help.
Also check the bandwidth you allocate in POLYCOM. Check your end to end
polycom testing on LAN ( just to make sure how it behaves at high
speed)....it may sound odd as it is doing well on ISDN but it will help you.
regards
>From: "Kleberg, Jason" <JKleberg@glhec.org>
>Reply-To: "Kleberg, Jason" <JKleberg@glhec.org>
>To: "'ccielab@groupstudy.com'" <ccielab@groupstudy.com>
>Subject: FW: Videoconferencing over IP
>Date: Fri, 17 Oct 2003 08:47:01 -0500
>
>I am forwarding this to the group, as I believe it was intended this way.
>
>-----Original Message-----
>From: Vazman@aol.com [mailto:Vazman@aol.com]
>Sent: Friday, October 17, 2003 8:43 AM
>To: JKleberg@glhec.org
>Subject: Re: Videoconferencing over IP
>
>
>Thanks for the responses. I will try to combine all the responses in one
>email.
>
>Topology is as follows:
>
>PicTel --Switch--Router --T1--Router--Switch--Pictel.
>
>Currently there is no QoS being used. My understanding was that QoS needs
>to
>be implemented when there is congestion. Currently there is no other
>traffic
>on the link. I have only enabled, rtp header-compression.
>
>I will verify the fps on the PIctel and see if I can set it to 30fps.
>
>1. Actual LAN/WAN topology and mark where you have places the PICTel. ***
>(See above)
>2. End to end ping delay. *** (10 ms average)
>3. IP Precedense on PICTel equipment. *** (Is there a setting on the
>Pictel?)
>4. bandwidth allocated (parameters set ) on PICTEL *** (Tried using 384 to
>1024 but got no difference)
>5. coverage area of the what kind of video is being transmitted ( still,
>slow or fast) *** (Used for meetings only, so there is movement but not
>much).
>6. Actual problem that you are having ...missing frames, blocks,
>synchronization ...and when it occur I mean when you stand still and /OR
>when the image is moving. *** (Problem occurs when there is movement, the
>video freezes for a split second and then comes back. It is not smooth
>flowing. The quality was very good when we were using ISDN (384)
>
>Thank you.
>
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