Figure 2-1 Outline Of Neax2400 Ims When The Dru Is Used; General - NEC NEAX 2400 ICS Manual

CHAPTER 2 GENERAL INFORMATION FOR DRU

1. GENERAL

This chapter explains the outline of the functions of the DRU, the system components, and loop-back test func-
tions.
2. SYSTEM OUTLINE
2.1 Purpose of the DRU
The DRU is a system which extends and decentralizes the Line Circuits (LC/DLC/ELC), which have so far
been accommodated in the PIM of the NEAX2400 IMS, using the digital line interface. Figure 2-1 shows
the outline of the NEAX2400 IMS when the DRU is used.
term
D
1-Pair Cable
1-Pair Cable
Analog PB TEL
1 2 3
RECALL
4 5 6 PNC
7 8 9 CNF
∗
# LINE
0 /SPD
HOLD TRF ANS SPKR
NEAX2400 IMS

Figure 2-1 Outline of NEAX2400 IMS when the DRU is used

DRU
2-Pair Cable
2-Pair Cable
DRU
ND-45383 (E)
term
D
Max.
•
23 or 30
•
terms
D
•
term
D
Analog PB TEL
1 2 3 RECALL
4 5 6 PNC
7 8 9 CNF
∗ LINE
0 # /SPD
ANS SPKR
HOLD TRF
Max. 30
Analog PB TELs
•
•
•
Analog PB TEL
1 2 3 RECALL
4 5 6 PNC
7 8 9 CNF
∗ LINE
0 # /SPD
ANS SPKR
HOLD TRF
CHAPTER 2
Revision CD 1.0
Page 3