Sorry for the delay.. For a graph comparing ms (the setting in attenuator) to the throughput - look at our testing guide: https://developer.att.com/static-assets/documents/video-optimizer/video-optimizer-testing-guide.pdf
There is a graph on page 8 (which is page 18 ofthe PDF).
For the profiles - there are 3 sample profiles included in the tool. You can modify as you wish - but kno wthat every carrier in the world will have different RRC profiles (and likely multiple RRC profiles) - so there is no 'magic bullet' setting here.
I would need your support due to have watched your videos on youtube, but such case i have now to understand the network behavoiur for 3G, couldnot find the concerete answer, when test have done on running youtube through mobile for 2 minutes, at the begining of test have packets and throughput ,after 30sec then the situation have changed to small packet but no throughput , my questons are :-
1- Is this due to video running on CDN and not required any real download with video continue streaming? 2- What is the difference between in diagnotstic window throughput inside message of burst compared to throughput window?
1. did the video still play? If it is a short YouTube video, it is possible that all of the segments were downlaoded in 2 minutes and stored on your phone for playback. This is not a function of the CDN - your phone simply had all of the information, so it stopped downlaoding. While the CDN has the entire movie - for you to see it on your phone, it has to be transferred to your phone. What a CDN allows is for the movie to be distributed to servers around the world - decreasing the latency of download (if you are in London, and the movie were in Tokyo, there would be 100s of ms round trip latency as each packet went halfway around the world. A CDN allows you to put the same movie in London, Tokyo, Seattle and New York (and many more places) to reduce the time it takes to get the packets.
2. Throughput on the diagnostics tab is simply a 1 second average of the ata transfer measured by Video Optimizer
Since period I have tried throttling on video optimizer , what noticed latency setting not give real throughput as example set 100ms and when checked the throughput it was around 200-300kbps ,after that I changed to 36-40ms ,gave me around 500-600kbps . Is this real value of speed ,even on network which test there was no CAP applied.
Check out page 8 of the VO user guide. (https://developer.att.com/static-assets/documents/video-optimizer/video-optimizer-testing-guide.pdf)
There is a graph that shows how the ms delay you set applies to the KBPS throughput you will obtain on the phone. It is not a perfect implementation, which is why it is *completely* changing in our release in August - where you will set the uplink and downlink in KBPS.