Aastra Telecom 53I User Manual

Firmware and Configuration Files

41-001160-00, Release 2.1, Rev 04

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Overview

When the IP phone is initialized for the first time, DHCP is enabled by default. 
Depending on the type of configuration server setup you may have, the IP phone 
may download a firmware version and configuration files automatically, or you 
may need to download it manually.

The firmware consists of a single file called:

The configuration files consist of two files called:

•

aastra.cfg

The following table provides the firmware for each Aastra IP phone model.

The IP Phone firmware file includes all the necessary files you need for your 
phone, including the language files. Loading the language files to your phone(s) is 
optional. For more information about loading languages files, see Chapter 5, the 
section, 

 on 

Automatic download is dependant on your configuration server 

setup.

53i

53i.st

55i

55i.st

57i

57i.st

57i CT

57i Cordless.st