Cisco IP CONFERENCE STATION 7936 Administration Manual page 28

Chapter 1 Overview of the Cisco IP Conference Station 7936
Understanding the 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.
Accessing TFTP Server
In addition to assigning an IP address, the DHCP server also points the
IP Conference Station to a TFTP server. You must configure option 150 on the
DHCP server for the TFTP information to be passed from the server to the client.
If the IP Conference Station has a statically-defined IP address, you must
manually configure the IP address of an alternate TFTP server; the
IP Conference Station uses this alternate TFTP server to receive its information.
Requesting the Configuration File
Configuration files (.cnf file format) for each telephony device, which define
connection parameters for Cisco CallManager, are stored on the TFTP server.
If you have enabled auto-registration in Cisco CallManager, the
IP Conference Stations access a default configuration file (XMLDefault.cnf.xml)
from the TFTP server. If you have manually entered the IP Conference Stations
into the Cisco CallManager database, each station accesses an .xml file
corresponding to its device name.
Cisco IP Conference Station 7936 Administration Guide
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