OCS 2007 R2 Bandwidth Calculations
Medium | Min | High Quality |
Data | 56kbps | 56kbps |
Voice | 50kbps | 80kbps |
Video | 50kbps | 350kbps |
RoundTable (Conference video phone) | 50kbps | 350kbps |
Note that the requirements are cumulative –
Data + Voice + Video =
56 + 50 + 50 = 156kbps (Minimum Quality)
or
56 + 80 + 250 = 386kbps (High Quality)”
Here are some calculations I have used. however the 300KBps is only video stream single direction. Bidirectional video consists of two streams..
The following formula can provide rough bandwidth consumption estimates for conferencing with Audio / Video.
Note: Calculation results will be displayed in Mbps
CC = Concurrent Conferences
PPC = Participants Per Conference
Conference Type | Bandwidth Consumption Mbps |
Audio with Application Sharing | (((CC * PPC)*14KBps)+((CC *PPC)*90KBps))*10^-3 |
Audio and Video | (((CC * PPC)*14KBps)+((CC *PPC)*600KBps))*10^-3 |
Another OCS 2007 Audio Bandwidth Calculation
Audio Codec | Frame Size [ms] | Codec payload bit rate [bits / sec] | Total payload bit rate [bits / sec] | Actual bit rate [bits / sec] | |
Without redundancy | With redundancy | ||||
RTAudio@16KHz | 20 | 24000 | 29000 | 45000 | 74000 |
RTAudio@16KHz | 40 | 24000 | 26500 | 34500 | 61000 |
RTAudio@16KHz | 60 | 24000 | 25666 | 31000 | 56667 |
RTAudio@16KHz | 20 | 18000 | 21000 | 37000 | 58000 |
RTAudio@16KHz | 40 | 18000 | 19500 | 27500 | 47000 |
RTAudio@16KHz | 60 | 18000 | 19000 | 24333 | 43333 |
RTAudio@8KHz | 20 | 8800 | 11800 | 27800 | 39600 |
RTAudio@8KHz | 40 | 8800 | 10300 | 18300 | 28600 |
RTAudio@8KHz | 60 | 8800 | 9800 | 15133 | 24933 |
You can also limit the bandwidth used through the registry, this registry key set is available through group policy when you update the group policy with the new OCS 2007 group policy objects.
(How to Specifies the maximum bandwidth for audio and video)
HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\LiveMeeting\MaxAudioVideoBitrate
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