Nortel 4025 User Guide

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Setting up the handset
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three short “beep” signals (only during a call). This indicates that 
approximately five minutes of talk time remains. 
See Figure 2 for battery charge status definitions.
Figure 2: Battery charge status
Note: When new batteries are inserted, a charge status icon does not 
display until a complete charge cycle has occurred. However, when 
partially charged batteries are inserted, then the charge status icon 
displays immediately. 
Subscribing the handset to a DECT system
The handset must be subscribed to at least one DECT system before it 
can be used.
Before you subscribe to a DECT system, acquire the following information 
from your system administrator:
PABX-PIN — this code is used to access the DECT system
DECT system name
local phone number assigned to your DECT handset
PARK-Code (a PARK-Code system ID that should be used only if 
more than one DECT system overlaps in your location)
Fully charged - 75 to 100%
Partially charged - 50 to 74%
Partially charged - 25 to 49%
Partially charged- 0 to 24%
Batteries are empty. 
An alert tone sounds and the icon (frame) flashes.