NEC NEAX2400 system manual Data Memory Configuration

GENERAL

Data Memory Configuration

5.Data Memory Configuration

Each node on a Fusion network has the following three kinds of Data Memory:

•Data Memory (DM)

•Local Data Memory (LDM)

•Network Data Memory (NDM) - Programmable only by the NCN.

When the contents of the NDM are changed at NCN, the new data is automatically copied to the NDM of each node. The NDM of the NCN functions as master memory. Figure 2-7shows how a Telephone Number change is performed in a Fusion network.

When Telephone Numbers are changed, the change at the NCN will affect all nodes on the network. In this figure, data change at Node A is automatically transferred to each node. Note

Node B

420000 420001

copy

410000	410001
		NCN
		Node A
Centralized		updating NDM
	MAT	at each node

TCP/IP

Data Change...

NDM (master)

Telephone Number Change

410000 410001 (for self-Node)

420000 420001 (for Node B)

430000 430001 (for Node C)

440000 440001 (for Node D)

LN NDM

Node C	430000	430001
	copy
LN	NDM

Node D 440000 440001

copy

LN

NDM

Note: The data must be manually transferred using the CBCN command when the Fusion system is configured for the first time or the system is once initialized at the NCN.

Figure 2-7 Network Data Memory

ND-70185 (E)CHAPTER 2

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Revision 3.0