Install Batteries (Optional); Assign A Station Number; Test Installation - Cortelco 2740 Instruction Manual

connect to the other jack.
c. Mount telephone to wall jack (RJ-11W).
d. Plug the coiled cord into the handset, and then plug the other end of the cord into the base.
e. Rotate the handset hook into the wall mount position and place the handset on the base.
1.3.4.3

Install Batteries (Optional)

The 2740 uses 3 AAA batteries. These batteries are not necessary for normal operation. The batteries
allow Line 1 to continue to function for up to two hours during a power failure. Alkaline batteries are
recommended. To install the batteries:
a. Remove the battery door on the bottom of the telephone.
b. Remove old batteries if installed.
c. Insert 3 new AAA 1.5 Alkaline batteries. Please note the "+" and"-" markings in the
compartment for the proper orientation of the batteries.
d. Close the battery cover.
Use caution when disposing of old batteries. Do not dispose of them in a fire. They may explode.
1.3.4.4

Assign a Station Number

Station 01 must be the first extension number assigned. Station 01 is required for programming
features on the 2740. Refer to Section 2.1 for detailed instructions on assigning station numbers.
1.3.5

Test Installation

This procedure should be used at each telephone after initial installation. It may also be used if you are
having problems with your system. First, verify the three items below at each telephone in the system.
a. Verify that the AC power transformer is connected to the 2740 and to mains power.
b. Verify that Line 1 is connected to the 2740.
c. Verify that a station number has been assigned.
Now, verify that Line 1 has been connected correctly to all telephones.
d. Press Line 1 at one telephone.
e. Verify that the Line 1 LED is Green, the Speakerphone LED is red and that dial tone is heard.
f. Verify that the Line 1 LED is red at each other station.
To verify the connection of lines 2 – 4, perform the following steps at each telephone.
g. Press Line 1.
h. Verify that the Line 1 LED is Green, the Speakerphone LED is red and that dial tone is heard.
i. Dial the telephone number for Line 2. Verify that the Line 2 LED flashes slowly. If it does not
flash, Line 2 may not be properly connected.
6 2740 User Manual Version 1.11
battery