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3.6
Function expansions with options bus
Function expansions can be connected to the O-bus (options bus) interface as required. No
major hardware adaptations are necessary. The central processor recognises the connected
modules when the system is booted and supplies them with the requisite parameters for initial-
isation. All modules are of the plug-in type. Up to four of a given module can be inserted (ex-
ception: only one STRB), or different modules can be combined as required.
3.6.1
Options adapter
The options bus adapter (OPA) is a mechanical and electrical adapter between the first options
module and the system motherboard.
3.6.2
GEE module
There are 4 call metering receivers in each of the modules listed below. These receivers regis-
ter the call charge pulses and perform initial processing functions:
Module
Frequency
GEE 12
12kHz
GEE 16
16kHz
GEE 16
16kHz
GEE 50
50Hz
Table 3-18
GEE module, national versions
The channel for call charge recognition is looped into the trunk and then routed to the TLA.
.
to TLA
to trunk
MSI
Figure 3-12
GEE module, interfaces
A31003-K16-X001-3-7620, 07/99
Hicom 100 E Version 2.1, Service manual
ITL, POR, SWZ, SPA, IM, FRA, AUS
BEL, GER without blocking circuit
FIN, RSA with blocking circuit
NDL, GBR
1
X3
10
1
GEE module
X4
8
Function expansions with options bus
Configurable for
MB side
1
10
X5
Module side
Overview of modules
X1
X2
3-21
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