Nortel Networks 4075 User Manual

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 

Basic information about your handset is described in the following 
sections:

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