NEC nd-20292 manual 200-3, To determine, An ESE-32B-1 CCU is always required ESE-32E-1 CCU

Line Telephones, modem pooling, and Voice Mail’

traffic. Heavier traffic may require additional MFR-EA ETUs be installed even though the amount of SLTs installed are low.

Table 200-l Recommended MFR-EA ETU Quantities

SINGLE	LINE	TELEPHONES		MFR.EA	ETUs
	CONNECTED		RECOMMENDED
			I
		0		0
i
		l-20	I	1
		21-40		2	I
		41-60		3
		61-76	I	4	I
			j _,-
To determine		the quantity	of interface	ETUs	required,
refer to Table 200-2.

For your reference, interface slot and port assignment numbers are shown in Figure 200-2.

3. Common ETUs.

a.A CPU-E( ) ETU must be installed in the CPU slot of the ESE-32B-1 CCU.

b.TSW-E, or TSW-EB ETU must be installed in the TSW slot in the ESE-32B-1 CCU.

c.MMC-E ETU must be installed in the MMC slot in each ESE-32E-1 CCU.

d.SMDR-E ETU can be installed in any option (OP) slot in either the ESE-32B-1 or ESE-32E-1 ecus.

e.LCR-E ETU can be installed in any option (OP) slot in either the ESE-32B-1 or ESE-32E-1 ecus.

	m	-;I		1
				0	0
/	s		S	P	P	I ‘:::,I 1
CCU	z;		G		2
4	7 --ii			0	0
/	S		S	P	P
ecu	U		G		2
3	-				-
/	P		R	0	0
	S		S	P	P
					2
					0
					P
					-1
						8”

ND-20292

CHAPTER 2

APRIL, 1990

4.CCUs, PSUs, and RSGs

a. An ESE-32B-1 CCU is always required.

b.ESE-32E-1 CCU:

Divide the total number of interface ETUs by 8. If the result is not a whole number, round it up to the next higher whole number. The whole number minus one is the quantity of ESE-32E-1 CCUs required.

NOTE: If total number of interface’ ETUs is 8 and SMDR-E and LCR-E ETUs are installed, an ESE-32E-1 CCU is required.

c.PSE-AD-l, PSE-DD-1 PSUs:

One PSE-AD-1 or PSE-DD-1 PSU is required for each CCU. The quantity of ESE-32B-1 CCU and ESE-32E-1 CCU is equal to the total of PSUs

required. PSE-AD-( ) and PSE-DD-( ) PSUs should not be installed in the same system.

Operational integrety of the system may be degraded ifpower is lost to the individual CCUs.

d.RSG-E Unit:

An RSG-E Unit is required for each (or two adjacent) CCU in which SLI-E( ) and VMI-E ETUs are installed (Refer to Table 200-3).

Table 200-3		Recommended RSG-E Unit Quantities
SINGLE	LINE	TELEPHONES	RSG-E UNITS
	CONNECTED		RECOMMENDED
		0	0
		l-24	1
		25-48	2
		49-76	3

109105

110106

1271 123 1119 I115 1 111 107

112 108

			77/	73
			78	74
			791;	75
			80%'	76
			45	41
			46	42
			47	43
			48	44
			13	09
			14	10
321	**	124	15	11
			16	12

Figure 200-2 Interface Slot and Port Assignment Numbers

200-3