Welcome to Avaya 4027, 4070, 4075 DECT Handsets
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Welcome to Avaya 4027, 4070, 4075 DECT Handsets
Avaya Digital Enhanced Cordless Telecommunications (DECT) 4027,
4070, and 4075 DECT 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 Avaya 4070 and 4075 DECT Handset offer a text-messaging facility
to send and receive messages. The messaging feature is not available on
the 4027 DECT Handset. The 4075 DECT Handset offers all of the
features of the 4070 DECT Handset, as well as Mandown and an LED
Indicator. The 4075 DECT Handset also offers IP54 protection and has a
changeable battery that uses inductive charging technology.
Avaya 4027, 4070, 4075 DECT 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 2.00
or later. On Avaya 4027 and 4070 DECT 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” (page173).
Basic information about your handset is described in the following
sections:
•“Feature overview” (page13)
•“Regulatory and safety information” (page14)
•“Safety precautions” (page16)

Feature overview

You can use your Avaya 4027, 4070, 4075 DECT Handsets to perform
the following tasks: