Information Technology Reference
In-Depth Information
This chapter includes the following topics:
Connecting and Powering Cisco IP Phones:
To
provide a centralized power system, the Cisco IP
Phones must receive their power from a centralized
source using PoE. This section discusses the different
options for PoE and the selection criterion of each.
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VLAN Concepts and Configuration:
VLANs allow
you to break the switched network into logical
pieces to provide management and security bound-
aries between the voice and data network. This sec-
tion discusses the concepts and configuration
behind VLAN.
■
Understanding Cisco IP Phone Boot Process:
This section discusses the foundations of the Cisco
IP Phone boot process. Understanding this process is
critical to troubleshooting issues with the IP Tele-
phony system.
■
Configuring a Router-Based DHCP Server:
This
section discusses configuring a Cisco router as a
DHCP server for your network.
■
Setting the Clock of a Cisco Device with NTP:
Because a VoIP network heavily depends on accurate
time, the sole focus of this section is keeping the
clocks accurate on Cisco devices by using NTP.
■
IP Phone Registration:
Once the Cisco IP Phone
receives all its network configuration settings, it is
ready to speak to a call processing agent. This sec-
tion describes the process and protocols that make
it happen.
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