NEC DSX-160 Manuale utente

System Conﬁguration

DSX-80/160 Hardware Manual Components ◆19

Components

System Conﬁguration

DSX-80/160 System Load Factor

The combination of lines and extensions you can connect to your DSX system may be limited by the System

Load Factor. Use the DSX-80/160 System Load Factor Worksheet on the next page to verify your system’s

conﬁguration. When entering data on the worksheet, for each installed card make entries for each Load Type.

There are two Load Types to consider: 5 VDC and 40 VDC.

To check your system conﬁguration:

1. Indicate the quantity for each card installed in the Qty column.

- The number of keysets, single line sets, and DSS Consoles does not affect the load factor.

For each item and for each Load Type, multiply the

Qty

times the

Load

and enter the value in the

Total

column.

- For example, two 16ESIU Cards have a load of 16 for 5 VDC and 40 for 40 VDC.

3. Add up the entries in each Total column and enter the values in Item 1: Load Type Totals.

4. Review Item 2: Power Supply Capacity and determine the capacity of the power supplies installed in

your system.

5. Compare the capacities in Item 2to your entries in Item 1. Item 1must always be equal to or less than

the entry in Item 2.

Important

Do not operate your system if the total for either Load Type

exceeds the Power Supply Capacity of your installation.

System Conﬁguration

20 ◆Components DSX-80/160HardwareManual

DSX-80/160 System Load Factor Worksheet

Description Qty

Load Type

5 VDC 40 VDC

Load Total Load Total

CPU Card 1 12 12 0 0

16ESIU Card 8 20

8SLIU Card 5 8

16SLIU Card 10 16

8COIU Card 3 0

16COIU Card 6 0

T1/E1/PRI Card 8 0

Item 1: Load Type Totals

(Cannot exceed Item 2: Power Supply Capacity.)

Item 2: Power Supply Capacity

If you have one power supply installed, the capacity is:

If you have two power supplies installed, the capacity is:

If you have three power supplies installed, the capacity is:

5 VDC = 40

5 VDC = 80

5 VDC = 120

40 VDC = 48

40 VDC = 80

40 VDC = 120

Notes:

• DSX-80 can only have 1 power supply.

• DSX-160 can have up to 3 power supplies. You cannot have more than two 16ESIU Cards per power supply,

regardless of System Load Factor calculations.

• Exceeding the allowed Load Type Total (Item 1) will cause the system’s power supplies to automatically shut down

and/or cause erratic system operation.

• The total of all station, line, DSS Console, and voice mail ports cannot exceed 160.

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