Motorola MOTOTRBO SYSTEM PLANNER Specifications Page 142

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System Components and Topologies 133
November, 2008
connecting a local PC and Ethernet is used for connecting to the back-end network of an IP
Site Connect system.
There may be an application known as RDAC-IP running on a host PC connected to the back-end
network of an IP Site Connect system. The application displays the status of repeaters and allows
its user to control some of the parameters of a repeater. The host PC maintains its link with the
Master and other repeaters using the same protocols as other repeaters in an IP Site Connect
system. Note that there may be a local RDAC application running on a host PC connected to a
repeater through RNDIS-USB interface. Also, analog, and local area only repeaters can be
connected to wide area system so that they may be managed by the RDAC application.
In digital mode, MOTOTRBO offers two logical channels. The configuration above shows both the
channels acting as wide area channels. This means that when a call starts at one of the logical
channels of a repeater, that repeater sends the call to all the other repeaters and they repeat the
call on their corresponding logical channel. Since calls are not repeated on both logical channels,
a radio on a logical channel cannot participate in a voice call on the other logical channel or logical
channels of other IP Site Connect systems unless scan is utilized. Note that scanning cannot be
enabled while roaming. Radio to radio data messages are not repeated on both slots either,
although it is possible to support one Application Server to serve multiple wide area channels. The
Figure 3-29 Wide Area System with Centralized Data Application Server
f
1
s
1
f
2
s
1
WAC1
MOTOTRBO
Digital Repeater
( MASTER )
RX = f
1
TX = f
2
d
i
g
i
t
a
l
f
1
s
2
f
2
s
2
d
i
g
i
t
a
l
MOTOTRBO
Control Station
(digital mode )
MOTOTRBO
Control Station
(digital mode )
Text Message
Server
Presence Notifier
Mu lti-Channel Device Driver
(MCDD)
Text Message
Dispatch
Location Server
Location
Dispatch
Application Server
USB
f
4
s
2
f
3
s
2
MOTOTRBO
Digital Repeater
RX = f
3TX = f 4
d
i
g
i
t
a
l
f
4
s
1
f
3
s
1
d
i
g
i
t
a
l
Network
WAC2
WAC1
WAC2
f
6
s
2
f
5
s
2
MOTOTRBO
Digital Repeater
RX = f
5
TX = f
6
d
i
g
i
t
a
l
f
6
s
1
f
5
s
1
d
i
g
i
t
a
l
WAC1
WAC2
RX = f
4
TX = f3
Slot = 1
MOTOTRBO SU
(digital mode )
TM
GPS
RX = f
4
TX = f
3
Slot = 2
MOTOTRBO SU
(di gital mode )
TM
GPS
RX = f
6
TX = f
5
Slot = 1
MOTOTRBO SU
(digital mode )
TM
GPS
RX = f6
TX = f
5
Slot = 2
MOTOTRBO SU
(digital mode )
TM
GPS
* WAC = Wide Area Channel
*TM = Text Messaging
Site 1
Site 2
Site 3
RX = f
2
TX = f
1
Slot = 2
RX = f
2
TX = f
1
Slot = 1
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