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Chamberlain OTIU Quick Manual

Indoor telephone interface

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Enlarged version

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

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.

Telephone Cord

Antenna

Indoor Telephone Interface

Step 2

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

Step 3

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.

Model OTIU

Page 1 Indoor Telephone Interface (OTIU) AC Adapter 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.
Page 2 (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”. Repeaters Step 1: On the phone connected to the OTIU, press “**07”...
Page 3: Call Forwarding
To activate the primary gate operator dial “*9” on the phone connected to the OTIU. Caller ID When there is a visitor at the gate the OTIU will display “Gate Visitor” on a Caller ID telephone (or Caller ID box) that is directly connected to it.
Page 4 If the Active LED on OTIU flashes after Call button is pressed, check telephone connections. If the Active LED on OTIU does not flash after the Call button is pressed, see Programming Accessories to ensure OTIU is programmed correctly.