Polycom DOC2237A manual Net-E1/Net-T1 Isdn Network Interface Data Stream

Chapter 4 - Hardware Description

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.

			Telephone
			Network
Backplane		RJ45	Lines
		Span A
	Net I/O
LEDs			ISDN
Connector

MVIPInterface

RJ45

Span B

ISA Right Angle Board Connectors

NET

A

B

ISDN-PRI ISA Card

Network Interface Module

LEDs

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.

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