Aastra Telecom 9133 I, 9112 I, 480I CT manual Upgrade Notes

SIP IP Phone Models 480i, 480i CT, 9112i, 9133i Release Notes

General Information

Upgrade Notes

This section provides notes that customers should be aware of before upgrading to IP phone firmware release 1.4.1. Aastra Telecom recommends that customers read this section completely and thoroughly prior to the upgrade to avoid any known issues with the upgrade process.

•The recommended base IP Phone firmware to upgrade to this new firmware release is 1.2.2 or above.

•Users who previously adjusted the audio transmit and receive gains for the Aastra IP Phones should reset the values to "0" and re-tune their phones again with release 1.4.1 if necessary. This is required to avoid high transmit levels heard by the far-end after upgrading to 1.4.1. To set audio transmit and receive gains in the 1.4.1 configuration files, see the SIP IP Phone Administrator Guide Release 1.4 or the SIP IP Phone Release Notes Version 1.3.1.

•Users upgrading from release 1.2.2 to 1.4.1 may experience post-upgrade configuration issues IF they previously configured their phones solely using the telephone user interface or Aastra Web user interface. Users may need to reconfigure their settings again after the upgrade due to new file system enhancements. This issue does not affect customers who configure their phones using a TFTP/FTP/HTTP server.

•Users who wish to downgrade from release 1.4.1 to 1.2 must downgrade to release 1.2.2 prior to downgrading to release 1.2, in order to restore file system structure. Failure to downgrade to version 1.2.2 first may result in configuration parameters being ignored.

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