NEC NDA-24300 manual Flip the MB key on the PLO card. Refer to Figure, PLO Changeover via MB Key

SYSTEM OPERATIONS

STEP 2 Flip the MB key on the PLO card. Refer to Figure 6-55.

After the above steps, set the MB key as shown below.

Then, the system changeover starts automatically.

ACT ATTENTION

MB

Contents

Static Sensitive

Handling

Precautions Required

1 2

MB key PLO: Active

Figure 6-55 PLO Changeover via MB Key

Note: If the MB key remains in the UP position, the PLO system also stays in its make-busy status. Be sure to return the key DOWN except in the case of a special purpose.

STEP 3 Confirm the changed lamp indications.

(1)To confirm the imposed PLO changeover, check the following lamps on both PLO cards. The LED indications must change as shown in Figure 6-56when the PLO system has been correctly changed over.

	PLO Formerly Active		After Changeover
ACT/OPE: Steady-ON (green)				OFF
PLO Formerly in STBY Mode		After Changeover
	ACT/OPE: OFF	Steady-ON (green)

Figure 6-56 LED Indications Before and After PLO Changeover

(2)If your system uses PH-CK16/PH-CK17, make sure the active TSW cards and the newly activated PLO are in the same switching block.

Because this card’s MUSIC ROM does not supply hold tones to the TSW cards which are in different Switching Blocks, make sure the newly activated PLO and currently active TSW cards are both in the same Switching Block. If not, perform the Speech Path System changeover, referring to Section 12.1.6.

Note: If the system uses PH-CK16-A/PH-CK17-A, this step is not required.

NDA-24300CHAPTER 6

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