Notice

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The Contrast and Brightness Tools are used to alter the physical settings of the display. The
Backlight setting determines the time before the display sleeps (goes black) or dims.
Two new short duration intervals of 5 seconds and 1 minute have been added to the existing
duration choices.
Because of the addition of the two new intervals, a previously selected preference may be
adjusted when the new firmware is loaded onto the phone. This one time adjustment can be
reset by entering the Contrast and Brightness Tools and selecting a new preference. Once
the new preference is selected the selection will be persistent across future resets and
upgrades.
Quality Improvements
The 0604DBG, 0621C4J, 0623C4D, 0624C4D, 0625C4D and 0627C4D firmware loads also
continue to improve the overall quality of the Phase II IP Phones (2001, 2002, 2004), IP
Phone 2007 and Next Generation IP Phones (1110, 1120E, 1140E and 1150E) through the
delivery of ongoing resolution of CRs and closed cases. In total, approximately 70 resolved
issues have been closed, and 14 customer cases have been closed in these new firmware
loads since the last suite of GA firmware loads. The list of resolved critical issues and the list
of closed cases since the last suite of generally available (GA) firmware loads are listed
below.
The 0604DBG, 0621C4J, 0623C4D, 0624C4D, 0625C4D and 0627C4D firmware releases
fix many minor issues and the following critical issues since the last suite of GA firmware
loads:
Slight chance firmware C4B may become unresponsive when attached to CS1K 4.00 and 4.50
Slight chance that IP Phone’s internal switch may become unresponsive
IP Phone may sometimes go offline and not recover
Remote chance that DHCP may suspend
Slight chance that IP Phone may lock on Active Call
Difficulty connecting to server if network cable unplugged and then restored
Errors sometimes occurring during DHCP option handling
IP Phone sometimes not re-registering after server maintenance
Difficulty downloading firmware if link speed set to 100BT Full Duplex
Sound quality may be impaired after network disruption
IP Phone may not respond to Zone Pages
Issues with EAP if Password or Device ID are input incorrectly
In "Enter Admin. Password" menu, using an USB mouse may freeze the phone