NEC NDA-24300 manual Check of Active PLO

SYSTEM OPERATIONS

(2)If the system uses PH-CK16 or PH-CK17 as the PLO, make sure the active PLO and the newly activated TSW systems are in the same Switching Block. Refer to Figure 6-53.

Because this card’s MUSIC ROM supplies hold tones only to the TSW cards that are in the same Switching Block, be sure to check the active PLO and the newly activated TSW systems are all in the same Switching Block. If not, perform the PLO changeover, referring to Section 12.1.7, Manual System Changeover of PLO.

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

PH-CK16/17 (Front View)

green

ACT

ACT

MB

MB

PLO (PH-CK16/17)

PLO (PH-CK16/17)

PLO: Active	PLO: ST-BY
Legend
: Lamp is ON	: Lamp is OFF

Figure 6-53 Check of Active PLO

STEP 4 Analyze the displayed system messages.

After STEPs 1 through 3 are performed, the system messages [7-E], [7-F], and [1-T] will au- tomatically display. Confirm that no errors occurred during the Speech Path System changeover process.

NDA-24300CHAPTER 6

Page 471

Issue 1