E.F. Johnson Company 3000 SERIES, Setup And Alignment Manual

Page: 21 / 214

3-1
ARCHITECTURE
SECTION 3 ARCHITECTURE
3.1 INTRODUCTION
The architecture of the Switch includes the
modules or elements that make up the physical
portions of the switch and the busses that carry data,
control and voice information.
3.2 SWITCH INTERFACES
The main interfaces to the switch are as follows
(see Figure 3-1):
a. Channel Interface to Multi-Net RF
b. Channel Interface to LTR Systems
c. Channel Interface to Conventional Channels
d. Interface with Dispatch Consoles
e. Interface with the Public Switched Telephone
Network
f. Interface to other Switches
g. Interface to the Call Processor
Figure 3-1 MULTI-NET SYSTEM SWITCH
PSTN
S
a
MULTI-NET DISPATCH
d
b
LTR
CONVENTIONAL
CHANNEL
c
e
f
OTHER
SWITCHES
g
CALL
PROCESSOR
W
I
T
C
H
TIM
WAM
CIM
CIM
CCM
DCM
NetNIM
SNM