OPERATION
2-25
November 2001
Part No. 001-7240-001
Repeater Number Programming With Aliasing
Since the next lower numbered repeater is moni-
tored when a system with a non-existent home repeater
is selected, a numbering scheme should be used that
equalizes, as much as possible, the gaps between the
active repeaters. This equalizes the loading on the
active channels.
When repeater 1 is reached, wrap-around to
repeater 20 occurs. Therefore, the status repeater is
always assigned as Repeater 20 and Repeater 1 as an
active repeater. This prevents the status repeater from
being used as a home repeater which is not desirable
because it then has no backup repeater (see Section
6.6). Examples of repeater numbering schemes are as
follows:
No. of Repeaters
Numbering
1
20
2
1, 20
3
1, 10, 20
4
1, 7, 14, 20
5
1, 5, 10, 15, 20
10
1, 3, 5, 7, 9, 11, 13, 15, 17, 20
2.10 LTR FEATURES
NOTE: Other LTR features are described in Section
2.8.
2.10.1 STANDARD GROUP CALLS
The two types of calls that can be placed with
LTR operation are standard group and telephone. Stan-
dard group calls are described in Section 2.8.1, and
telephone calls are described in the next section.
2.10.2 TELEPHONE CALLS
General
LTR localities which are set up for LTR telephone
calls have a block of ID codes reserved for RIC
(repeater interconnect) calls. For the transceiver to
place and receive telephone calls on those localities,
an LTR telephone group must be programmed with an
ID code from this block. Then when this ID code is
decoded (received) or a telephone group is selected to
make a call, the transceiver enters the telephone
operating mode.
To place an LTR telephone call, a telephone
group must be selected, and to receive an LTR tele-
phone call, the telephone ID must be selected or
scanned or have a higher priority.
Since this transceiver operates half duplex, the
PTT switch must be pressed to talk and released to
listen the same time as with a dispatch call. Therefore,
the mobile user cannot hear the landside caller while
transmitting or speak to the landside caller while
receiving.
Placing an LTR Telephone Call
1. Turn transceiver power on and set the volume as
described starting with Section 2.3.1.
2. Select the desired LTR system if applicable. Then
select the dial mode and a telephone group as
follows:
•
To select the dial mode and a preprogrammed
telephone group, press FCN PHONE.
•
To select the dial mode without changing the
selected group, manually select a telephone group
if required and then press FCN DIAL.
When the dial mode is selected, the handset
portion
of the telephone icon is displayed,
and then when a telephone group is selected, the
base portion
is displayed.
3. Dial the desired number using the keypad or recall it
from memory by pressing FCN RCL and the loca-
tion number (0-9). Refer to the dial mode descrip-
tion starting in Section 2.7 for more information.
4. When the desired number is displayed, briefly press
the PTT switch and when the dial tone sounds, send
it by pressing FCN SND. Landside ringing (or a
landside busy condition) should then be heard. If the
radio system is busy or could not be accessed, busy
or no access conditions may be indicated the same
as described for standard group calls in Section
2.3.13.
