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© 2007, The Chamberlain Group Inc.
114A3550 All Rights Reserved
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. THEREARE NO OTHERUSER 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.
FOR TECHNICAL SUPPORT DIAL OUR TOLL FREE NUMBER:
1-800-528-2806
www.liftmaster.com
Troubleshooting
Dial tone is not heard after connecting to the
OTIUEX.
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 OTIUEX is programmed to the correct
GAPLM, DAILM, or Intercom. Check that gate operator
has been taught to master unit as well.
If OTIUEX has already been programmed and will need
to have memory cleared (see below).
When dialing numbers a dial tone is heard.
All numbers and symbols must be dialed within 3
seconds of each other, otherwise the OTIUEX times out
and returns to dial tone.
Memory needs to be cleared.
Clearing OTIUEX memory will not clear any OTIUEX
settings or programmed phone numbers. To clear
memory, dial “**#8” on the telephone connected to the
OTIUEX. 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).
OTIUEX 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 OTIUEX 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.
After dialing “*9” a beep is heard, then an error tone.
Check batteries in GCU.
Will not accept command after dialing “**”.
Check the line and telephone connections.
Telephone does not ring when Call button is
pressed.
If the Active LED on OTIUEX flashes after Call button is
pressed, check telephone connections.
The telephone may not be compatible. Use a 22V
adapter instead of the supplied 18V adapter. This
changes the REN# from 3 to 5.
If the Active LED on OTIUEX does not flash after the
Call button is pressed, see Programming Accessories to
ensure OTIUEX is programmed correctly.
There is a buzzing or failed connection when call is
answered.
Move OTIUEX away from phone and/or computer. Try
changing channel of OTIUEX and/or the channel on the
GAPLM (see Gate Access Panel manual).
Only first couple of words from caller are heard.
Lower the GAPLM microphone sensitivity (see Gate
Access Panel manual).
Number Function
**01 Enable Call Forwarding
**02 Disable Call Forwarding
**07 Activating the OTIU
**06 Verify Call Forwarding Number
**#8 Clear Memory
*9 Activate Gate
**102 - **105 Change number of rings
*#(Phone Number)# Program call forwarding
number
PIN Number Functions
To enable Canadian Mode press “**13”. To disable
Canadian Mode press “#*16”. The Canadian
programming numbers are shown in the table below:
Number Function
#*01 Enable Call Forwarding
#*02 Disable Call Forwarding
#*07 Activating the OTIU
#*06 Verify Call Forwarding Number
#*#8 Clear Memory
#9 Activate Gate
#*102 - #*105 Change number of rings
##(Phone Number)# Program call forwarding
number