NEC 616 manual Explanation of Programming

SECTION 300 PROGRAMMING

310 Explanation of Programming

1.The Electra-616 Electronic Key Telephone System

comes nrovided with a Resident System Program in PROM

I

(Programmable Read Only Memory). When the system is powered this Resident System Program is duplicated in RAM (Random Access Memory) and becomes the Network Plan Memory (NPM). The NPM is the program the system actually utilizes. This NPM will norrna.lly be supplemented by progr arnrning performed at each installation to provide the system program desired for the individual site. The additional programming is entered into RAM which is vola- tile, but which has been provided a battery to retain program during power outage.

battery provided on the CPU-S KTU is switched

lost with the firsr loss of Power to rhe KSCJ.

2.Keyset 1 must be installed to allow System Prograrnm- ing. NO other station can program system data. The programming procedure includes the foilowing steps:

1.Completion of job specification

2.Completion of programming work sheets.

3.Taking keyset 1 “Off-line”

4.Selecting a memory block (using DSS buttons), thus selecting the general area of the memory to be modified.

5.Selecting addresses via the dial pad.

6.Entering data via CO/PBX button ! -6, MIC but- ton and DND button.

7.Displaying data, clearing data, changing address (plus or minus 1 address increment) and writing datausing the Add-On, Last NBR, Hold and Speed Dial buttons.

8.Repeat steps 4 th_ru 7 until all desired data has been written into memory.

9.Return keyset 1 to “on-line” mode.

10.Put the program into the working Network Plan Memory. This function will occur automatically when the entire system is idle. An alternate method is to depress the reset button on the CPU-S KTU; this will interrupt service. Testing of the new program can then be performed.

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