EFJohnson 002-9750-003 User Manual

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.

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.

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.

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.