NEC nd-20292 manual Basic, Expansion CCUs, 220.10, Help, Understanding Some Requirements

ND-20292

CHAPTER 2

APRIL, 1990

2.The central equipment of this system consists of up to four Central Control Units (CCUs).

a.Basic CCU: 32 ports.

b.	Basic	CCU	+	1 Expansion	CCU:	64	ports.
c.	Basic	CCU	+	2 Expansion	CCUs:	96	ports.
d.	Basic	CCU	+	3 Expansion	CCUs:	128 ports.

3.A maximum of two DSS/BLF Consoles and one CO Add-On Module can be equipped at any

attendant position, provided the system maximum of six units is not exceeded.

4.Combination of system speed dial memory numbers and any outside .,number can be assigned to station speed dial (Consecutive Speed Dial

Memory Assignment). By using this technique, numbers longer than sixteen digits can be available for speed dialing.

220.10	INSTALLATION		EXAMPLE
Table 200-5 provides			an	example	to	help in
understanding		some	of the	requirements		when

configuring a system. In this example, 12 CO lines, 12 Multiline Terminals (without optional equipment), 5 Multiline Terminals with DPA-E Unit, 3 Multiline Terminals with DTA-E Unit, 2 Multiline Terminals with both a DTA-E and DPA-E Unit, 10 SLTs without message wait lamp, 6 SLTs with message wait lamp, 3 external speakers for zone paging, 6 HFU-E Units, 4 ADA-E Units, 2 conference circuits, 4 E&M Tie Lines, 3 DSS/BLF Consoles, 1 CO Add-On Module, LCR and

SMDR are being installed. Refer to Figure 200-4 to help in the conceptional understanding of the system being installed.

220.11 CABLING REQUIREMENTS

Each CCU is equipped with three 50 position miniature ribbon type (female) amphenol connectors. Fifty position miniature ribbon type connector (male) ended cables are required for connections to the Main Distribution Frame (MDF).

Allowable loop resistance, maximum length, and type of cable. Refer to the Table 200-6.

Table 200-5 System Configuration Example

I

DEVICE

TYPE

SYSTEM

REQUIRED

UNIW

SLOT

EQ;rNF,",",T

AND

QUANTITY

POSITION

Central

Control

Unit

1

ESE-32B-1

2

ESE-32E-1

Power

Supply

3

PSE-AD-

1

PSU

Ring

Generator

1

RSG-E

FUG

CO

Line

12

3

COI-E/EB

3

interface

slots

Tie

Line

4

2

TLI-E/EB

2

interface

slots

Multiline

Terminals

with

DPA-E

installed

5

I

3

ESI-EB

Multiline

Terminals

with

DTA-E

installed

3

Multiline

Terminals

with

DTA-E

and

DPA-E

inst.

2

I

7

interface

slots

Multiline

Terminals

without

DPA-E

installed

12

’

>

4ESI-EA

DSS/BLF

consoles,

CO

Add-On

Modules

4

I

Sinale

line

telenhones

with

message

wait lamn

6

2

SLI-EB

4

interface

slots

2

SLI-EA

Single

line

telephones

without

message

wait

lamp

10

DTMF

Receiver

Unit

1

1

MFR-EA

1 interface

slot

Conference

Circuits

I

2

1

2CNF-E

2

interface

slots

External

Speakers

3

ECR-E

1 interface

slot

Station

Message

Detail

Recording

1

SMDR-E

1 option

slot

Least

Cost

Routing

1

LCR-E

1 option

slot

Off-Hook

Announcement

7

7

DPA-E

Data

Switching

5

5

DTA-E

Handsfree

Unit

6

6

HFU-E

Ancillary

Device

Adaptor

4

4

ADA-E

REMARKS

-II

I

ETE-6-(	) and	ETE-16-2	TELs
	cannot be
equipped	with	DPA-E	, HFU-E	?I
				I
	or DTA-E	Units.
NOTE	2			3

Installed in Multiline Terminal

Installed in Multiline Terminal

Installed in Multiline Terminal

Installed in Multiline Terminal

NOTE 1: Install the RSG-E unit in the CCU where all SLI-E( ) ETUs are installed, or use supplementary RSG cable, to support SLI in adjacent CCU’s.

NOTE 2: Install all SLI-E( ) ETUs in one CCU only, if not, then in two adjacent CCU’s.

NOTE 3: External speakers and amplifiers for paging must be locally provided.

200-7