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NHRC-10 User Guide
Copyright
1999, 2000, 2001, NHRC LLC. All Rights Reserved.
Page 69
5.14 LiTZ
The NHRC-10 supports the LiTZ standard. LiTZ stands for Long Tone Zero, which is a
DTMF zero tone is received for more than two seconds continuously.
The LiTZ protocol is used to indicate emergency traffic or some other kind of emergency
condition.
When a LiTZ is received, or the LiTZ prefix is entered, the controller will play the LiTZ
message, message #115.
NHRC suggests programming the LiTZ prefix to “911,” and programming the LiTZ
message with information about use of the emergency autodials or information about
using another repeater system to get help in an emergency situation.
To activate the LiTZ message, either the long tone zero or the LiTZ prefix can be sent:
<prefix>
where:
<prefix>
is the LiTZ prefix as programmed by the repeater operator.
Example:
If you transmit the zero DTMF tone for three seconds, the controller will
play the LiTZ/911 track.