Chamberlain OTIU User Manual

Model OTIU

Indoor Telephone Interface

Overview

The Indoor Telephone Interface uses a 900 Mhz
secure digital radio link that allows secure
conversations and gate operator control.
The Telephone Interface Unit (OTIU) is compatible
with various Liftmaster Wireless Products.

Carton Inventory

Indoor Telephone Interface (OTIU)

AC Adapter

Telephone Cord

Antenna

Step 2

Plug in the AC Adapter. The Power LED will light.

Step 3

Assembly

Choose location near a phone jack and an electrical
outlet. Do not place OTIU near a computer or any
other “radio noise source”. Keep antenna clear of
obstruction.

Step 1

Plug in antenna.

Plug the cord from the phone in the PHONE port.

Step 4

Plug the included phone cord in the LINE port and
connect it to the phone jack in the wall.

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Program Accessories

With Existing Network

NOTE: If programming into an existing network, ensure

the OTIU is programmed to the Active unit.

Gate Access Panel (GAPLM)

Step 1: On the phone connected to the OTIU, press

“**07” after hearing the dial tone. Listen for double beep.
Hang up and Learn LED will flash for 15 seconds. If an
error tone is heard it means that memory will have to be
cleared (see Troubleshooting).
Step 2: Within 15 seconds enter Master PIN Number on
GAPLM.
Step 3: Press “05” and GAPLM will beep. The OTIU will
ring the telephone and Caller ID will display “Unit
Learned”.

DAILM

Step 1: Set Dipswitch #1 on the DAILM to the

UP position to set the DAILM as a primary device.
Step 2: On the phone connected to the OTIU, press
“**07” after hearing the dial tone. Hang up and Learn
LED will flash for 15 seconds. If an error tone is heard it
means that memory will have to be cleared (see
Troubleshooting).
Step 3: Within 15 seconds, press and release the Learn
button on the DAILM.
Step 4: The OTIU will ring the telephone and Caller ID
will display “Unit Learned”.

Repeaters

Step 1: On the phone connected to the OTIU, press

“**07” after hearing the dial tone. Hang up and Learn
LED will flash for 15 seconds. If an error tone is heard it
means that memory will have to be cleared (see
Troubleshooting).

Step 2: Within 15 seconds press the Learn button on
ONE Repeater. The LED will light.
Step 3: The OTIU will ring the telephone and Caller ID

will display “Unit Learned”.

NOTE: If the Repeaters have not been programmed to
anything within an existing network, see Repeater
manual for further instructions.

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