OPERATION
2-22
November 2001
Part No. 001-7240-001
Landside-Originate Special Calls
Calls can be also be made from any landside tele-
phone to specific mobiles (Unique ID calls) or groups
(Directed Group calls). Calls can also be placed to
other sites similar to when they are mobile dialed.
If the system has DID lines, the landside caller
can dial a mobile directly because each mobile that
can receive these calls is given its own phone number.
If the system has standard trunk lines, the telephone
number of the system is dialed. Then when the system
answers, a short tone sounds to indicate that the digits
specifying the destination of the call should be dialed.
The same digits are dialed as described in “Placing a
Special Call”. The landside telephone must produce
standard DTMF tones to dial these digits.
After these digits are dialed, a beep is heard
which indicates that the number was accepted by the
system. Ringing then indicates that the mobile is being
rung unless it is a Directed Group call. With those
calls, no ringing of the mobile occurs and another beep
is heard which indicates the path is complete and
speaking should begin.
After the mobile answers, the landside party
should respond in the normal manner. Remember that
the mobile is operating half duplex and cannot hear the
landside party while transmitting. When the call is
finished, it should be terminated by the mobile party.
Three beeps indicate that the call has terminated.
2.9.3 BUSY QUEUING/FREE SYSTEM
RINGBACK
This transceiver does not have the busy queuing
or free system ringback features. Busy queuing places
a call in a queue if all channels are busy, and free
system ringback alerts the user when the repeater
system is no longer busy.
However, busy queuing may be provided at the
system level for LTR-Net telephone, unique ID, and
directed group calls (but not standard group calls). If
this feature is enabled by the System and Subscriber
Manager and resources are not available when one of
these calls are placed, a voice message informs the
user that the call has been placed in a queue. This
message occurs when the PTT switch is released after
dialing the digits.
If resources then become available, ringback is
heard and the PTT switch can then be pressed to
continue the call. If the call cannot be placed in the
allotted time, it is terminated and another voice
message informs the user that this has occurred.
2.9.4 ROAMING (AUTO-REGISTRATION)
General
The roaming (auto-registration) feature permits
all types of LTR-Net calls to be automatically routed
to the LTR-Net locality (site) in which the mobile is
operating. To utilize roaming, the following must be
selected:
•
An LTR-Net system must be selected if system
scanning is disabled (see Section 2.6.1).
•
Roaming must be enabled by the ROAMING menu
parameter or programming (if the menu parameter is
not available).
•
If system scanning is enabled, an LTR-Net system
does not need to be selected. However, the trans-
ceiver immediately roams to an LTR-Net locality in
the system scan list if one can be detected (see
Section 2.6.4)
NOTE: Deleting LTR-Net systems from the scan list
also deletes them from locality searching when
roaming, even when scanning is disabled (see Section
2.6.7).
When roaming is enabled or disabled by the
menu mode, either “ON” or “OFF” is selected as
described in Section 2.5.2. If communication is to be
maintained on the current locality regardless of signal
strength, turn roaming off.
Registering on a New Locality
When power is turned on with an LTR-Net
system selected or if another LTR-Net system is
selected, registration is attempted on the currently
selected locality every 5 seconds if there is a free
channel. The registration message includes the
