The design phase is the second step in the planning, design, implementation, operation, and optimization (PDIOO) life cycle. Whereas Chapter 4, “Planning Phase,” discussed the best practices in designing the LAN/WAN infrastructure, this chapter provides configuration steps and sample configurations for the devices based on the XYZ, Inc. network topology and requirements. Topics in this chapter include the following:
Understanding call-processing architecture
Selecting IP Phones
Designing network infrastructure:
— Designing an IP addressing and VLAN scheme
— Designing DHCP/TFTP services
— Configuring QoS in LAN/WAN
The proposed call-processing architecture for XYZ, Inc., ...