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Before you Upgrade
RN-001029-03, Release 2.4.1, Rev 01 3
SIP IP Phone Models 9143i, 9480i, 9480i CT, and 675xi Series Phones Release Note 2.4.1
Before you Upgrade
Please Read Before Upgrading Your Phone
If you have a firmware version on your phone prior to 2.3, please read the following IMPORTANT
information before upgrading the phones:
• LLDP is enabled by default.
If LLDP is enabled on your network, the phones may come up with different network settings.
For more information about LLDP, see the Aastra SIP IP Phone Administrator Guide.
• Support for DHCP Options 159 and 160.
If the DHCP server supplies Options 159 and 160, the phones will attempt to contact the
configuration server given in these options. For more information about Options 159 and 160,
see the Aastra SIP IP Phone Administrator Guide.
• HTTPS validation.
If you are using HTTPS and the certificates are not valid or are not signed by Verisign,
Thawte, or GeoTrust, the phones fail to download configuration files. For more information
about HTTPS validation, see the Aastra SIP IP Phone Administrator Guide.
• Watchdog task feature.
If the phone detects a failure (for example, a crash), the phone automatically reboots. For more
information about the Watchdog feature, see the Aastra SIP IP Phone Administrator Guide.
Note: If you factory default a phone with Release 2.3 and above
software, when the phone reboots, it attempts to connect to
rcs.aastra.com. There is no personal information transmitted from the
phone and the phone continues to boot up as normal.