Polycom DOC2237A Bedienungsanleitung Seite 102

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Seitenansicht 101
Chapter 4 - Hardware Description
4-30
The Net-E1/Net-T1 ISDN Network Interface Data Stream
Figure 4-14 shows a block diagram of the network interface of the MGC unit.
Figure 4-15: Net-E1/Net-T1 ISDN Network Interface block diagram
The Net-E1/Net-T1 ISDN Network Interface Module is connected to the
telephone network via the Net I/O card, which is connected to the PABX and
then the CSU. The customer supplies the PABX and the CSU. The Net-E1/
Net-T1 Network Interface Module includes the ISDN PRI-ISA that supports
either ISDN-T1 or ISDN-E1.
The ISDN data stream flows from the ISDN telecommunication network
through the PABX > CSU > MGC RJ-45 input connector > Net I/O card >
Backplane connectors > Network Interface Module > the ISDN PRI ISA card
to the Backplane information bus.
Connector
LEDs
LEDs
Backplane
Net I/O
Telephone
Network
Lines
RJ45
Span A
RJ45
Span B
ISDN-PRI ISA Card
ISA Right Angle
Board Connectors
Network Interface Module
MVIPInterface
NET
A
B
ISDN
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