Computing the exact amount of bandwidth needed for each VoIP call is necessary for planning and provisioning sufficient bandwidth in LANs and WANs. The previous section referenced parts of this computation, but this section thoroughly covers the subject of VoIP bandwidth calculation. The impact of packet size, Layer 2 overhead, tunneling, security, and voice activity […]
This section is intended to give you an overview of telephony deployment models and their necessary elements and components in an enterprise network. It briefly introduces Cisco Unified CallManager, and it discusses a few different implementation options for CallManager clusters. The last part of this section includes a simple configuration for a Cisco voice gateway […]