Cisco Cisco WebEx Meeting Center WBS30 Libro bianco

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WebEx Meetings without Telepresence Participants

In this white paper, we will discuss how Cisco

Collaboration Meeting Rooms (CMR), when enabled on a Cisco

WebEx

site, affects the meeting experience. First we’ll cover bandwidth requirements for meetings with only

WebEx

users, and then the requirements for both Cisco CMR Hybrid and Cisco CMR Cloud, to help you deliver

optimal user experiences.

WebEx sites (such as Cisco.webex.com) provisioned for CMR can also be used to host meetings using only the

WebEx desktop or mobile application - these are considered meetings without telepresence.

The meeting experience will be the same as before any type of CMR was added to the WebEx site provisioning.

That means that as users share data and main video, all participants will send and receive the best version of the

meeting that their client is capable of.

When Cisco WebEx and telepresence applications are brought together in a CMR Hybrid or Cloud meeting, the
WebEx application must agree on a common video layer. We’ll explore the effects of that action in later sections;
first, we’ll review bandwidth requirements for meetings without telepresence.

Bandwidth Requirements for WebEx Meetings without Telepresence Participants

When a user schedules a WebEx meeting using CMR Hybrid, if telepresence is not added at that time, the meeting

is considered WebEx only (Figure 1). That means that only WebEx clients, mobile or desktop, may join. The same

is true for CMR Cloud-based meetings in which telepresence is not added during scheduling.

Figure 1. Meeting Topology for Meetings without Telepresence Participants

Cisco WebEx clients use H.264 SSL VPN Client (SVC) technology to communicate with both participants in the

WebEx Cloud and participants on WebEx mobile and desktop clients. Where necessary, the system will send and

receive one or more SVC layers to permit the best possible viewing experience for all users, regardless of

individually available bandwidth. Highly connected participants may be asked to send lower SVC profiles if WebEx

clients connected at lower speeds request it.

During the meeting, additional thumbnail layers are sent to and from participants as well, providing the ability to see

the active speaker as well as the rest of the group. As network conditions and capabilities change, the WebEx

client periodically runs a client test procedure to determine whether or not to move to a higher or lower SVC layer

to improve the experience. All of these procedures are performed without any user intervention.