Network planning for meetings

Sametime meetings generate two types of traffic: web traffic and RTP media streams. Web traffic is standard HTTPS. And media streams by default use UDP for optimal performance. If the UDP service is unavailable, enabling TCP for RTP media streams is supported.

To support the Sametime default configuration, use the following ports for client access:
  • For Kubernetes deployments: TCP port 443 and UDP port 30000
  • For Docker deployments: TCP port 443 and UDP port 10000

If you enable TCP for media streams, you can configure it to use TCP port 443. However, it does not send media streams as HTTPS data. Confirm with your security and firewall teams that this non-standard use of HTTPS port 443 is permitted.

The amount of bandwidth consumed by Sametime Meetings depends on several factors, such as the quality of the video being shared, the number of video and audio streams being shared, and more. The default limit for simultaneous video streams is 8. Increasing this value affects bandwidth consumption. For more information, refer to Increasing active cameras.

You must discuss the design of your Sametime deployment with your network and security teams before implementation. Many common network layer devices and technologies introduce latency, which can degrade the user experience. Identify all potential bottlenecks, for example, firewall, proxy, VPN, packet shapers, and intrusion prevention devices before deploying servers.