3M C960, Service Information

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Model C960 Special Instructions for System Manager

3M 2000 May
21
The talk lock feature provides hands free operation in duplex communication
systems. With the talk lock feature enabled, the headset automatically switches
from standby to talk/listen when a customer is detected at the menu sign. The
headset automatically switches back to standby when the customer leaves the
menu sign.
To enable or disable the talk lock feature:
1. Turn the headset OFF.
2. Press and hold the L button while pressing and holding the ON button until
audible tones are heard. This indicates that the feature has been enabled or
disabled.
3. Check headset operation to determine if the talk lock feature has been
disabled or enabled. With the talk lock feature enabled:
•
The headset automatically switches from standby to talk/listen when a
customer is detected at the menu sign.
•
The headset automatically switches back to standby when the customer
leaves the menu sign.
ü
Note
The headsets are shipped with the talk lock feature enabled.
Symptoms of Interference:
•
The operating range between the base station and the headsets gets very
short, sometimes 25 feet or less.
•
Normally, you will hear nothing to indicate interference. Occasionally, you
might hear a whistle or a chirp in the background, but seldom, if ever, will
you hear talking.
•
The Talk or Page LED flickers briefly causing one of the following:
a. The system may leave the STANDBY mode, and go into the LISTEN
mode with no vehicle alert heard.
b. The system may drop out of TALK LOCK by itself.
Solutions:
•
Change the base station to another channel, at least three channels away. A
better solution is to change jumper J3 to Lane 2 if possible.
•
Locate and shut off other 900 MHz devices in the building, such as cordless
phones, video systems, and speaker systems.
•
In cases where a cellular phone tower is nearby, certain combinations of cell
frequencies may cause interference. In some cases, changing channels may
have no effect. Please call you local 3M Dealer, or 3M F.S.T.
Communications Products Technical Service (800–328-0033) in these cases.
Enabling/Disabling
the Talk Lock
Feature
Changing Channels
if Interference is
Encountered