IP Telephony Components
Introduction
In this section, you review the features of several Cisco IP Phone models and examine how to configure a CCM server to support these phones. Because these IP phones typically connect to a Cisco Catalyst switch, examine the Catalyst syntax for setting up inline power and auxiliary VLANs. Finally, review various gateways that can connect your IP telephony network to an existing PBX or to the PSTN.
IP Telephones
Cisco has several models of IP phones. Some have displays, and some support inline power (where the IP phone is powered over the Cat 5 network cable). Most modern Cisco IP Phones support the G.711 and G.729a codecs. Following is a partial listing of Cisco IP Telephones:
• 7910/7910+SW:
— Support local ...
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