Aastra Telecom 480I CT User Manual
General Information
41-001024-00, Rev 09, Release 1.4.1
3
SIP IP Phone Models 480i, 480i CT, 9112i, 9133i Release Notes
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.
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.
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.
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.
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.
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.