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Welcome to DECT 4027, 4070, and 4075 Handsets
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Welcome to DECT 4027, 4070, and
4075 Handsets
Nortel Digital Enhanced Cordless Telecommunications (DECT) 4027,
4070, and 4075 Handsets are cordless phones with enhanced features
suitable for office use. The handsets include a single-press SOS key used
to make one-touch calls or send messages to a particular contact
number.
The DECT 4070 and 4075 Handset offer a text-messaging facility to send
and receive messages. The messaging feature is not available on the
DECT 4027 Handset. The DECT 4075 offers all of the features of the
4070 Handset, as well as Mandown and an LED Indicator. The DECT
4075 also offers IP54 protection and has a changeable battery that uses
inductive charging technology.
Nortel DECT 4027, 4070, and 4075 Handsets are compatible both with
traditional DECT system (based on DMC cards) and with the SIP DECT
solution.
Note: This User Guide is applicable to handset software release 1.70
or later. On 4027 and 4070 handsets with an earlier software version
some of the described features are not available.
To determine the software release installed on your handset, see
“Viewing information” (page 165).
Basic information about your handset is described in the following
sections:
• “Feature overview” (page 13)
• “Regulatory and safety information” (page 14)
• “Safety precautions” (page 16)
Feature overview
You can use your Nortel DECT 4027, 4070, and 4075 Handsets to
perform the following tasks: