NEC ND-71762(E) system manual Ccis Digital Line

GENERAL INFORMATION FOR CCIS

Figure 2-3 Hardware Configuration of No. 7 CCIS System

<CCIS Digital Line>

MDF

No.7 CCIS

Speech Line

and Signalling

Line

<CCIS Analog Line>

No.7 CCIS

Speech Line

No.7 CCIS

Signalling

Line

MODEM

CCT

Note 1

DTI

CCH

Note 1

TRK

TRK

CCH

Note 2

Speech

Path

System

PLO

CPU

Note 1: When using one channel of the DTI as the Control Link.

Note 2: When using Analog MODEM as the Control Link.

ND-71762 (E)CHAPTER 2

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Issue 2