Chamberlain Telephone OTIU User Manual

Model OTIU  
Indoor Telephone Interface  
Step 2  
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  
Plug in the AC Adapter. The Power LED will light.  
Step 3  
Indoor Telephone Interface (OTIU)  
Telephone Cord  
Antenna  
AC Adapter  
Assembly  
Plug the cord from the phone in the PHONE port.  
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 4  
Step 1  
Plug in antenna.  
Plug the included phone cord in the LINE port and  
connect it to the phone jack in the wall.  
1
 
Features & Operation  
NOTE: Any features of the OTIU do not require extra  
service from the Telephone Company.  
Call Forwarding  
If user is away from home the OTIU can be programmed  
to call when there is a visitor. When visitor presses Call  
button the OTIU will ring home telephone 1 time. If  
telephone is not answered, the OTIU will dial call-  
forwarding number that has been programmed. After  
ringing that number 3 times the OTIU will hang up. If  
visitor presses Call button again the process will repeat.  
Learn LED  
Power LED  
Answering Calls (Call Forwarding Mode)  
When answering call from OTIU, a beep will be heard  
for up to 10 seconds. To accept call, dial “0”.  
Hang up to disconnect.  
AC Adapter  
Antenna  
Phone  
Line  
To control the gate dial “*9”.  
NOTE: OTIU checks if home line is busy prior to dialing  
forwarding number. If busy, the OTIU will wait and try  
again. Once OTIU dials forwarding number, if forwarding  
number is busy, the OTIU will wait and try again.  
Answering Calls (Regular Mode)  
When visitor presses the Call button on intercom, the  
telephone connected to the OTIU will ring distinctively  
up to four times. If an expandable OTIU system is used  
all phones within the system will ring. When phone is  
answered it will connect to the Intercom at gate or door.  
After connecting to the Intercom, the gate can be  
activated by dialing “*9”.  
Programming Call Forwarding Number  
On telephone connected to OTIU, dial “*#”. A beep will  
be heard.  
Enter the forwarding number (up to 14 digits). To accept  
new number, press “#”. A beep will be heard.  
NOTE: For long distance calls, include proper prefix.  
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.  
When there is a visitor at the door, the OTIU will display  
“Front Door” or “Back Door” depending on how you have  
your door Intercom set up (see Intercom manual).  
If someone is tampering with the gate, the OTIU will ring  
the phone and display “!Gate Tamper!”.  
Verifying Call Forwarding Number  
On telephone connected to OTIU, dial “**06”. A beep will  
be heard. Hang up the telephone.  
The telephone will ring and the call forwarding number  
that has been programmed will be displayed on Caller  
ID screen.  
Call Waiting  
Enable/Disable Call Forwarding  
To enable call forwarding dial “**01” on telephone  
connected to OTIU. A beep will be heard.  
To disable call forwarding dial “**02” on telephone  
connected to OTIU. A beep will be heard.  
If talking on the phone connected to OTIU, a distinctive  
beep will be heard indicating Call Waiting. Caller ID will  
alert that there is a visitor. To place call on hold and  
connect to the Intercom, press the FLASH button.  
If talking on phone other than the one connected to the  
OTIU, the telephone connected to the OTIU will ring as  
normal and the call will not be interrupted.  
Remote Activation Through Answering  
Machine  
Change Number of Rings  
By default the OTIU will ring the telephone 4 times. If an  
answering machine is programmed to pick up after 4  
rings, OTIU should be changed to ring 3 times. This will  
prevent answering machine from picking up if phone is  
not answered when a visitor calls. If answering machine  
does pick up, visitor will hear answering machine  
message through speaker.  
Gate can be remotely activated through the answering  
machine. Call home and when answering machine picks  
up, dial “*9”. The OTIU will then activate the gate.  
Using the telephone connected to OTIU, dial :**102 for  
2 rings up through “**105” for 5 rings.  
3
 
OTIU is not getting expected transmission range.  
When used in buildings with stucco or cement walls, the  
range is greatly reduced. The Repeaters can be used  
close to the building to solve this problem.  
Keep OTIU away from trees, metal objects, masonry,  
computers, and any other “Radio Noise Source”. Radio  
devices that run on 900 Mhz also affect range. Turn  
them off and see if reception has improved.  
Keep antenna vertical.  
PIN Number Functions  
Number  
**01  
**02  
**07  
**06  
Function  
Enable Call Forwarding  
Disable Call Forwarding  
Activating the OTIU  
Verify Call Forwarding Number  
Clear Memory  
**#8  
*9  
Activate Gate  
After dialing “*9” a beep is heard, then an error tone.  
Check batteries in GCU.  
**102 - **105  
Change number of rings  
*#(Phone Number)# Program call forwarding  
number  
Will not accept command after dialing “**”.  
Check the line and telephone connections.  
Troubleshooting  
Dial tone is not heard after connecting to the OTIU.  
Check phone connections. If it is a two-line phone  
ensure it is on Line 1.  
If a dual-tone error tone is heard when trying to open  
gate, ensure OTIU is programmed to the correct  
GAPLM, DAILM, or Intercom. Check that gate operator  
has been taught to master unit as well.  
Telephone does not ring when Call button is  
pressed.  
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.  
If OTIU has already been programmed and will need to  
have memory cleared (see below).  
There is a buzzing or failed connection when call is  
answered.  
Move OTIU away from phone and/or computer. Try  
changing channel of OTIU and/or the channel on the  
GAPLM (see Gate Access Panel manual).  
Memory needs to be cleared.  
Clearing OTIU memory will not clear any OTIU settings  
or programmed phone numbers. To clear memory, dial  
“**#8” on the telephone connected to the OTIU. A beep  
will be heard.  
To clear DAILM memory, set Dipswitch #1 to the  
DOWN position, then press the Learn button until a  
beep is heard (about 15 seconds).  
Only first couple of words from caller are heard.  
Lower the GAPLM microphone sensitivity (see Gate  
Access Panel manual).  
When dialing numbers a dial tone is heard.  
All numbers and symbols must be dialed within 3  
seconds of each other, otherwise the OTIU times out  
and returns to dial tone.  
FOR TECHNICAL SUPPORT DIAL OUR TOLL FREE NUMBER:  
1-800-528-2806  
NOTICE: To comply with FCC and or Industry Canada rules (IC), adjustment or modifications of this receiver and/or transmitter are prohibited,  
except for changing the code setting or replacing the battery. THERE ARE NO OTHER USER SERVICEABLE PARTS.  
Tested to Comply with FCC Standards FOR HOME OR OFFICE USE. Operation is subject to the following two conditions: (1) this device may not  
cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.  
© 2008, The Chamberlain Group Inc.  
All Rights Reserved  
114A3530B  
 

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