Ltr Features Not Available; Conventional Features; Busy Indicator; Monitor Mode - E.F. Johnson LTR-Net 7243 Service Manual

7.5vdc 1 and 4 watts part no. 242-7243-xxx
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5. When the other party answers, press the PTT switch
and respond. The PTT switch must be pressed to talk
and released to listen the same as with standard
group calls.
6. When the call is finished, it should be terminated
and the dial mode exited. A call is usually termi-
nated by transmitting either the
characters (whichever is programmed). To automat-
ically send these characters and exit the dial mode,
press FCN PHONE. To exit the dial mode without
sending these characters, press FCN DIAL. Termi-
nation is indicated by three beeps.
Receiving LTR Telephone Calls
1. Select or scan the system and group programmed for
telephone calls. When a telephone group is selected,
the base portion
of the telephone icon is
displayed.
2. When "ringing" is heard, press the PTT switch and
respond. The PTT switch must be pressed to talk and
released to listen the same as with standard calls.
3. When the call is finished, it should be terminated as
in step 6 of the preceding section.
Landside-Originate Telephone Calls
Calls can be placed from a landside telephone to a
mobile transceiver (if the transceiver and radio system
have this capability). With most systems, a mobile
user can be called directly (each has a unique tele-
phone number). With others, the mobile being called
must be specified as follows:
1. Dial the number of the radio system in which the
mobile transceiver is operating.
2. When the system answers, a short tone sounds to
indicate that the number of the mobile being called
should be dialed. This number is usually five digits
long and must be dialed using a tone-type telephone.
The first two digits are the home repeater number of
the mobile, and the last three digits are the telephone
ID code of the mobile. With LTR interconnect
equipment, the first digit must be dialed within 5
seconds of hearing the tone, and no more than 5
3. Ringing is then heard by the landside caller while

2.10.3 LTR FEATURES NOT AVAILABLE

#
or
#
this transceiver:

2.11 CONVENTIONAL FEATURES

2.11.1 BUSY INDICATOR

channel with scanning disabled, " BUSY " is indicated
in the display (see following illustration). The squelch
should be adjusted as described in Section 2.11.4 for
proper operation of this indicator.

2.11.2 MONITOR MODE

control (if programmed) so that all activity on the
selected channel (system) can be monitored. The
receiver unsquelches only if a carrier is detected. To
select the monitor mode, one of the option switches
must be programmed for the monitor function (see
Section 2.5.1). Pressing this switch toggles the
monitor mode on and off. When the monitor mode is
enabled,
following illustration.
monitoring. If the Monitor option switch is pressed
2-26
seconds must elapse between digits or the call is
terminated.
the mobile is being rung.
The following LTR features are not available with
Busy Queuing/Free System Ringback
System Search
Transpond
When a carrier is being detected on the current
Busy
Indicator
BUSY
The monitor mode disables Call Guard Squelch
is indicated in the display as shown in the
A conventional system must be selected to enable
OPERATION
Monitor Mode
Selected
November 2001
Part No. 001-7240-001

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