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A question that pops up quite regularly is how much bandwidth does Sametime need. As a rule of thumb you can use this values:
- A one to one text chat need about 0.2kBit/sec, yes that would be 200 baud. What worked in the 300Baud modem days with your favorite BBS hasn't changed: chat is cheap. Presence transfer consumes about the same (Your Netbios broadcasts probably slanders 10 times the bandwidth. If you transfer files or images (pasted into the chat) bandwidth consumption will peak as: get what you can get and finish the transfer
- Voice chat requires around 10kBit/sec per connection. A two way chat has one connection, a three way chat two (n-1 actually, you don't need network bandwidth talking to yourself)
- Video chat consumes 256kBit/sec per connection. The same rule as for voice chat applies. A threesome thus requires 512kBit/sec.
The Sametime codecs have adaptive features and you can tweak the video quality, so YMMV.
Thanks
David
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Comments
Looking forward to one of Chris' sessions.
Posted by Stephan H. Wissel At 11:26:56 On 08/26/2008 | - Website - |
Sametime 7.5.1 has added a lot of extra overhead for rich text, then also don't forget Sametime now sends around emoticons, screenshots etc.
Would be great if IBM would update this spreadsheet that came with this 2.0 deployment guide
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Posted by Carl Tyler At 00:23:33 On 08/26/2008 | - Website - |
Posted by Chris Miller At 00:55:29 On 08/26/2008 | - Website - |