Aastra Telecom 53I - Manual (Page 8)

General Information
2 RN-001029-00, Rev 03, Release 2.1
IP Phone Release Notes 2.1
General Information
Release Content Information
This document provides release content information on the Aastra 53i, 55i, 57i,
and 57i CT SIP IP phone firmware.
Hardware Supported
This release of firmware is compatible with the following Aastra IP portfolio
products:
• 53i
• 55i
• 57i
• 57i CT
Bootloader Requirements
This release of firmware is compatible with the following Aastra IP portfolio
product bootloader versions:
• 53i - Bootloader 2.0.1.1055 or higher
• 55i - Bootloader 2.0.1.1055 or higher
• 57i - Bootloader 2.0.1.1055 or higher
• 57i CT - Bootloader 2.0.1.1055 or higher
Model Release Name Release Version Release Filename Release Date
53i Generic SIP 2.1 FC-001086-00-04 July 2007
55i Generic SIP 2.1 FC-001087-00-04 July 2007
57i Generic SIP 2.1 FC-001088-00-04 July 2007
57i CT Generic SIP 2.1 FC-001089-00-04 July 2007