AASTRA 6700i series, 9143, 9480i, 9480i CT SIP Administrator Guide EN - Manual (Page 58)

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Configuration Server Requirement
A basic requirement for setting up the IP phone is to have a configuration server. The
configuration server allows you to:
• Store the firmware images that you need to download to your IP phone.
• Stores configuration files for the IP phone
Reference
To set the protocol for your configuration server, see Chapter 4, “Configuring Network and
Session Initiation Protocol (SIP) Features” , the section, “Configuring the Configuration Server
Protocol” on page 4-104 .
To update the firmware on your phone, see Chapter 8, “Upgrading the Firmware” .