User's Manual

SETTINGS
SETTINGS > CALLING > GENERAL
ENVOY™ TRANSCEIVER REFERENCE MANUAL 217
An in-link message session may be used during an ALL, ANY, Group Selective, NET,
or Wildcard call, where you can send data within the established link by pressing
CALL and following the prompts. If the link is closed automatically during these
in-link messages, consider extending the In Call Timeout entry.
Range: 0 to 300 sec
Default value: 30 sec
Related links:
Call types on page 400
ALE address syntax on page 409
LBT Mode
The LBT Mode entry sets whether or not the transceiver listens for calls and traffic
on a channel before starting a call.
The transceiver is capable of listening to a channel before initiating a call on the
channel. If LBT Mode is enabled, the transceiver detects whether or not there is traffic
on the selected channel. The transceiver listens on a channel for the length of time
specified in the LBT Period entry. If there is traffic on the channel, the transceiver
reports that the channel is occupied.
If you want the transceiver to:
• not test channels used for making calls, select Disabled
• test channels using LBT for every call, select Enabled
• test channels using LBT for every call, with the option to override, select
Override allowed
Default value: Disabled
CAUTION: Calls using the Emergency call type or calls made through the key
override the LBT Mode if it is enabled at either level.
LBT Period
The LBT Period entry sets the length of time that the transceiver listens for calls and
traffic on a channel before starting a call.
Range: 1 to 10 sec
Default value: 2.0 sec
LBT Data Sensitivity
The LBT Data Sensitivity entry sets the sensitivity level for detection of false or
weak data signals when LBT is active. In noisy operating environments you may want
to decrease the sensitivity so that LBT does not detect general noise.
Range: –0.500 to +0.500 sec
Default value: 0.002 sec