Cortelco 2740 User Manual
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2740 User Manual Version 1.11
1.3
Installation
1.3.1
Overview
The 2740 is part of the 7 Series Multiline phone system. Up to 16 instruments may be connected in
this system. All these devices use conventional telephone wiring. Wiring runs between stations may be
a maximum of 600 feet.
1.3.2
Before Installation
In order to install your telephones correctly, you must determine the incoming wiring configuration. In
most cases, incoming lines will be terminated in either RJ11 Single Line Jacks or RJ14 Double Line
Jacks. If you are not sure of your incoming line configuration, contact your telephone line installer.
All connection between the wall jacks and the telephones may be done with standard telephone
modular cords. Please be sure that your modular cords have at least 4 wires in them.
If you have RJ11 jacks, you will need two line adapters (not included) to connect to the 2740. These
couplers take the single line wiring and convert it to double line wiring. These couplers should be
available where you purchased your 2740.
1.3.3
Installation Configurations
1.3.3.1
Standard Configuration
The 2740 is initially configured so that each line is common at all stations. In other words, Line 1 at
each telephone is connected to the same incoming line; Line 2 at each station is connected to the same
incoming line, etc. This is commonly known as a “square system.” If this is suitable for your
installation, you only need to connect the telephones to the telephone lines.
1.3.3.2
Private Line
A private line is connected to only one telephone in the system. No other phones in the system have
access to this telephone line.
1.3.3.3
Unconnected Lines
It is also permissible to leave one or more lines unconnected.
1.3.3.4
Line 1
Line 1 MUST be connected to the same incoming line on all phones for the system to function
correctly.
1.3.4
Phone Installation
1.3.4.1
Desk Mount
a.
Connect the power adapter to the jack on the bottom of the phone. Plug the adapter into a wall
outlet which is not controlled by a wall switch. Use only a 9V DC 500mA, Class 2 adapter.
b.
Connect the line cords. If you have RJ14 line jacks, you need only connect 4 wire line cords
between the wall jacks and the jacks in the base of the 2740. If you have RJ11 line jacks, you
will need 2 line couplers as discussed in Section 1.3.2. Note that the jacks on the 2740 are
numbered L1/L2 and L3/L4. Connect your incoming lines accordingly.
c.
Select the desired viewing angle and install the desk stand. The desk stand can be installed in
two positions to give a choice of viewing angle.
d.
Plug the coiled cord into the handset jack, and plug the other end of the cord into the base.
e.
Place the handset on the base.
1.3.4.2
Wall Mount
a.
Remove the desk stand. The unit will then mount directly on a standard wall telephone jack.
b.
Connect the power adapter and the line cords. See Steps “a” and “b” above. Use the included
short line cord to connect to the mounting jack. Use one of the included long line cords to