General Dynamics R2600 Series, Operator'S Manual, Page: 146 / 402

100
6-7 SYSTEM INITIATED TRUNKING
The
SYSTEM INIT
softkey in the "Meter:" field con-
figures the analyzer to display the current data and
test status for the system initiated trunked test
sequence. The analyzer simulates the central con-
troller (the "system") calling the radio under test.
In the following subsections, the call sequence
selected in Dispatch. For details on testing System
Initiated Phone Interconnect, Call Alert, and
Failsoft call sequences, refer to Section III,
Applications, in this manual.
NOTE
Fleet, Subfleet, and Unit ID information must
be entered before the execution of a System
Initiated test. If a Radio Initiated test is
executed prior to the System Initiated test,
these fields are automatically updated. If
required, refer to 6-8.1 for information
related to entry and storage of system/fleet
map configurations.
When the test is started, the analyzer generates an
idle OSW pattern on the control channel selected
for a short period of time so the radio can acquire
the control channel. After the time has elapsed, the
analyzer directs the radio to the voice channel and
provides the voice channel handshake signaling
required by the type of Trunk Signaling used.
Throughout the signaling process the status
thermometer is updated at the appropriate time.
6-7.1 System Initiated Dispatch Trunk I
Signaling
The radio receives the control channel message to
move to a voice channel and switches to that
channel. When the radio detects the high-speed data
word and low-speed data word, the radio unmutes
and stays on the voice channel until the test is
terminated.
To set up testing, select the Trunk mode by placing
the cursor in the "Mode:" field in the Display Zone,
and selecting the
TRUNK
softkey. Place the cursor
in the "Meter:" field and press the softkey
SYSTEM
INIT
to view current data and test status for a system
initiated trunked test sequence. Within the Display
zone, place the cursor in the "Sig Type:" field and
press the softkey
TRUNK I
to select Trunk I
signaling. A screen similar to figure 6-7 appears.
Parameter selection is similar to Radio Init
Dispatch Trunk I described in paragraph 6-6.1.