You may check the Dynamic Bandwidth option.
Please see below screen capture for your reference.
VC Connect Live Service Status
How do I make a video call?
Local Country Telephone Dialing Numbers
What firewall changes do I need to make to use this service?
How do I test my video is working?
How to solve Polycom HDX Endpoint Packet Loss
Supported Endpoints and Interoperability
Audio and Video Specifications
Endpoint registering to the wrong location