OpenPhone 71/73/75 System Telephones
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1. OpenPhone 71/73/75
System Telephones
The OpenPhone 71, OpenPhone 73 and OpenPhone 75 are corded system tele-
phones that you can operate on your OpenCom 100 communications system. The
MenuCard display makes your telephone easy to operate and gives you fast access
to your system’s wide range of different functions and features.
The OpenPhone 71, OpenPhone 73 and OpenPhone 75 have the same function-
ality, the only difference being the size of the display and the number of program-
mable keys available. Furthermore, the OpenPhone 73 and OpenPhone 75 can be
expanded by means of an add-on keypad module with a display, that offers addi-
tional programmable keys (see page 31).
The OpenPhone 73 and the OpenPhone 75 are also available as IP telephones
(OpenPhone 73 IP and OpenPhone 75 IP). These telephones have the same func-
tionality as the standard system telephones. All of the functions described in this
guide are also available for the IP telephones. The chapter VoIP Telephones starting
on page 83 contains a short summary of the information necessary for the IP
system telephone user.
You can activate the features and programme functions on the telephones them-
selves, or equally conveniently, use the Configurator of the communications
system.
About this User Guide
The description of the various functions of your system telephone covers (unfortu-
nately) many pages. Not every user has the time and leisure to read the guide from
start to finish before telephoning for the first time. The following chapters are
mandatory reading before using your telephone:
■ Safety Precautions starting on page 8: These tips are for your own safety and
help you to protect the telephone from damage!
■ Installation Site starting on page 9
■ Key Assignments starting on page 11 and Display and MenuCards starting on
page 23: Here is an overview of the features of your telephone.
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