NEC NEAX2400 system manual Fusion System with FCH

SYSTEM CONFIGURATION

Fusion System with FCH

2.Fusion System with FCH

2.1System Configuration

A sample Fusion system configuration that uses a DTI to carry D-channel is shown below. In this configu- ration, the Fusion link is established between nodes via the T1 link. Figure 3-2shows a Fusion system con- figuration with FCH.

This figure shows a Fusion System Configuration with FCH.

Node A

TSW/INT

D-channel (example)

ch 0

ch 23

MUX

Fusion Link

DTI

DTI

D/I

B-channel / D-channel

D/I

FCH

FCH

10 Base T

10 Base T

FCH

FCH

......

......

HUB

HUB

10 Base T

10 Base T

CPU

LANI

LANI

PCI Bus

TSW (Time Division Switch): PH-SW 10

HUB: PA-M96

MUX: PH-PC36

LANI (LAN Interface): PZ-PC19

FCH (Fusion Call Control Handler): PA-FCHA

DTI (Digital Trunk Interface): PA-24DTR

Node B

TSW/INT

MUX

CPU

PCI Bus

Figure 3-2 Fusion System Configuration with FCH

2.2 Redundancy of Fusion Link

The FCH (PA-FCHA) card handles a Fusion link, occupying one time slot of a frame by D/I function located on the DTI card. In terms of redundancy, the Fusion system (with FCH) can have one of the following config- urations.

•Redundant Configuration (LANI, HUB, FCH, and DTI)

•Redundant Configuration (HUB, FCH, and DTI)

•Redundant Configuration (FCH and DTI)

•Non-Redundant Configuration

CHAPTER 3 ND-70185 (E)

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