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Free System Ringback
If a busy condition exists when making an LTR telephone call, the Free System Ringback feature automatically
signals when the system is available. It operates as follows:
When the PTT switch is released, the busy tone stops sounding and "RING BACK" is indicated in the display.
Then when the system becomes available, a dial tone is heard and the number can be dialed. If dialing is not started
within a few seconds, normal operation resumes. This feature is always available (special programming is not required),
and it functions on telephone calls only.
System Search
If an out-of-range condition exists when making LTR telephone calls, the System Search feature automatically
searches for another system that is within range. This feature is available only if it has been enabled by system operator
programming or by the Menu mode "LTR SEARCH" parameter (see page 18). It operates as follows:
If an out-of-range condition occurs when the PTT switch is pressed, several access attempts are made. If none are
successful, an intercept tone sounds and "OUT-OF-RNG" is displayed. When the PTT switch is released, the intercept
tone stops sounding and "SYS SEARCH" is displayed.
The transceiver then attempts to access other programmed systems in the current bank that have a group
programmed for telephone calls. A beep sounds as each access is attempted, and each eligible system is checked once.
If no system can be accessed, an intercept tone sounds and the feature deactivates. If a system is accessed, that system
and the telephone group are displayed and a dial tone sounds. The number can then be dialed. If dialing is not started
within a few seconds, normal operation resumes.
Other LTR Features
Priority and Block ID Codes, the Transmit Inhibit feature, and the Telephone mode are available with LTR as well
as Multi-Net operation. Since they operate the same in both modes, the Multi- Net description also applies to LTR oper-
ation. Refer to pages 14 and 15 for descriptions of these features.
Transmit Disable On Busy
This feature automatically disables the transmitter if the system (channel) is busy when the PTT switch is pressed
("BUSY" indicated in display). It can be enabled or disabled on each conventional group by system operator program-
ming.
When the transmitter is disabled by this feature, the busy tone sounds and "TX DIS BSY" is displayed. It is not
possible to access the system by holding down the PTT switch until the system is no longer busy. If this feature is not
used, the transmitter keys even if the channel is busy, so the channel must be monitored as described in "Conventional
Monitoring Before Transmitting" on page 11.
This feature may occasionally disable the transmitter even though monitoring indicates that no one is using the
channel. To key the transmitter in this situation, the PTT switch can be released and then pressed again within 1 second.
LTR MODE FEATURES
CONVENTIONAL MODE FEATURES
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