![]() ![]() The benefits of this type of configuration include the following: Figure 7.1 illustrates how the Cisco IP phone acts as a three-port switch.Ĭisco IP phone switch ports do not support Inter-Switch Link (ISL) encapsulation, only 802.1Q. Just like a switch, the phone can support 802.1Q frames between itself and another switch, and more than one VLAN can be supported between the Cisco Unified IP phone and an access switch. Understanding the Theory of Voice VLANsĪ Cisco IP phone can act as a three-port switch. ![]() This chapter describes the typical boot process for Cisco IP phones and indicates the best practices related to configuring the network to support Voice over IP (VoIP). To deploy Cisco Unified Communications Manager Express, network services need to be established and properly configured on all routers and switches for Cisco IP phones to function. Identify the XML configuration files and understand their use Understand the Cisco IP phone bootup process Understand how CDP is used in Cisco VoIP solutionsĬreate DHCP scopes on the Cisco IOS router platformĬonfigure DHCP relay on the Cisco IOS router platform ![]()
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