NEC NDA-24300 manual IOC Card Replacement Procedure, OPE lamp on the IOC card goes

UNIT/CIRCUIT CARD REPLACEMENT PROCEDURE

1.3.3IOC Card Replacement Procedure

The IOC (PH-IO24) card is mounted in Slot No. 02 and/or 03 of the LPM. The card’s main function is to provide a serial interface between the system and its ex- ternal equipment, such as the Maintenance Administration Terminal (MAT), Sta- tion Message Detail Recording System (SMDR), Message Center Interface (MCI), Property Management System (PMS), etc.

ATTENTION

Contents Static Sensitive

Handling Precautions Required

ATTENTION The equipment connected to the I/O ports of each card (MAT, SMDR, etc.) cannot be used while replacing the IOC card.

Replacement Procedure

Turn ON the MBR key on the IOC (PH-IO24) card to be replaced.

Turn ON the MB key on the card.

Extract the card from the LPR.

Set the keys on the new card, referring to the card to be replaced.

A

NDA-24300

•OPE lamp on the IOC card first flashes and then becomes red.

•All I/O ports are closed and the equipment, such as MAT and SMDR, loses connections.

Note: The text data (such as

billing information), registered before this step, will be safely transmitted later. However, the data, recorded after this step, will not be sent out, and instead is stored in the buffer.

• OPE lamp on the IOC card goes

CHAPTER 4

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