Network connection
Internet connection
The quality of video/audio that multiCAM AIR BRIDGE receives is impacted by the internet bandwidth you have available. Based on resolution, each guest connection to AIR BRIDGE can require up to 3.5mbps of bandwidth in each direction. For a production involving four simultaneous guests, you should plan on allocating 14mbps of your available downstream internet bandwidth to multiCAM AIR BRIDGE . The video being returned from multiCAM AIR BRIDGE to each remote guest can also be high resolution with the bandwidth demands as their downstream video. However, this return video is typically only used as ‘reference video’ that’s lets the guests interact with the studio, and can be dialed down to lower resolutions to conserve upstream bandwidth. When calculating your total internet bandwidth requirements, keep in mind all of the other production systems placing demands on it, including file transfers and live streams.
When calculating your total internet bandwidth requirements, keep in mind all of the other production systems placing demands on it, including file transfer and live streams.
AIR BRIDGE and CALLINMANAGER Firewall Considerations
The AIR BRIDGE and CALLINMANAGER systems connect securely to the Internet using SSL encryption. Built using WebRTC, they communicate over the Internet with our cloud-based peering service. They use the open ports described below to communicate with this service and to stream the video and audio (bidirectionally) that is used by these systems.
Ports Required:
| Port 4502 (HTTPS) | Interactions with cloud-based peering and control services |
| Port 3444 (TCP/UDP, TLS) | Interactions with our relay server |
| Port 3478 (TCP/UDP, TLS) | Interactions with www.call-in.tv |
| Port 19302 (TCP/UDP, TLS) | Interactions with www.call-in.tv |
| Range of ports 32,000-65,535 | Low level TCP and UDP Traffic (peer-to-peer, encrypted /TLS) |
Direction of Traffic: Bidirectional, full range.
Connections:
The initial peer-to-peer connection will be initiated over HTTPS by the AIR BRIDGE system, linking it to the remote guest system outside of the firewall. Once that connection is established, the two systems will communicate over multiple simultaneous connections that can be initiated by either side.
WebRTC cannot navigate across routes that require double NAT translations.