Cisco 7935 Administration Guide - Page 25

Chapter 1 Overview of the Cisco IP Conference Station 7935 Understanding the Startup Process Understanding How the IP Conference Station Interacts with Cisco CallManager Cisco CallManager is an open and industry-standard call processing system. Cisco CallManager software runs on a Windows 2000 server and sets up and tears down calls between phones, integrating traditional PBX functionality with the corporate IP network. Cisco CallManager manages the components of the IP telephony system, the conference stations, the phones, access gateways, and the resources necessary for such features as call conferencing and route planning. For information about configuring Cisco CallManager to work with the IP devices described in this chapter, refer to the Cisco CallManager Administration Guide and the Cisco CallManager System Guide. Understanding the Startup Process When connecting to the VoIP network, the IP Conference Station goes through a standard startup process. Loading the Stored Station Image The IP Conference Station has non-volatile Flash memory in which it stores firmware images and user-defined preferences. At startup, the IP Conference Station runs a bootstrap loader that loads a station image stored in Flash memory. Using this image, the station initializes its software and hardware. Configuring VLAN If the IP Conference Station is connected to a Cisco Catalyst switch, the switch next informs the conference station of the voice virtual local area network (VLAN) defined on the switch. The IP Conference Station needs to know its VLAN membership before it can proceed with the Dynamic Host Configuration Protocol (DHCP) request for an IP address. Obtaining an IP Address If the IP Conference Station is using DHCP to obtain an IP address, the station queries the DHCP server to obtain one. 78-12727-03 Cisco IP Conference Station 7935 Administration Guide 1-5