Bandwidth requirement for voice calls

Hi All,
Need expertise advise on the following concern about voice call.
1. Bandwidth requirement for video call across all other endpoint(using Polycom / Lifesize end point at their end)
a)Standard Video
b)1K HD Video
c)4K HD Video
2. Plus can we determine bandwidth required for all the following below:
a. 1 to 1 VC end point ( Cisco TP – Cisco TP)
b. Bridge call ( Cisco TP to Polycom / Lifesize)
c. 1 to 1 VC end point ( Cisco TP – Polycom / Lifesize)

Thanks for the info Wayne. I missed out information about the endpoint.
Client using CTS 3010. Acoording to datasheet it says
11.9 Mbps (1080p, 30 fps best motion handling), 10.1 Mbps (1080p, 30 fps better motion handling), 8.8 Mbps (1080p, 30 fps good motion handling)
6.4 Mbps (720p, 30 fps best motion handling), 4.5 Mbps (720p, 30 fps better motion handling), 3.1 Mbps (720p, 30 fps good motion handling)2
My question is does the bandwidth required for both ways or only one way?
And I'm aware CTS 3010 doesn't support 4K video.

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Bandwidth requirement for voice calls

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