Technical information

Chapter 3 - Before You Deploy

Notes

Older Polycom ViewStation systems and the RADVision MCUs

and gateways both support 10 Mbps half duplex only.

There are known issues with some older Cisco Catalyst 10/100

switches and video endpoints negotiating half/full duplex. If

the negotiation fails, the endpoint will still function, but the

system will experience video freezing every 3 to 5 seconds.

Predeployment Planning

The main factors to consider in planning the deployment are:

❑ LAN/WAN considerations — document the LANs, subnets,

and WAN links involved in the deployment.

❑ Capacity planning — assess the bandwidth requirements for

the deployment.

❑ Call processing considerations — define call processing

architecture and identify gatekeepers, define registration policy

and call policy.

❑ Dial plan — define details of services, routing, policies, zones,

and addressing.

❑ Server requirements — verify that all management software

will be installed on suitable equipment.