User's Manual

ND-70185 (E) CHAPTER 2

Page 7

Revision 3.0

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 2-7 shows how a Telephone Number change

is performed in a Fusion network.

Figure 2-7 Network Data Memory

Telephone Number Change

410000 410001 (for self-Node)

420000 420001 (for Node B)

430000 430001 (for Node C)

440000 440001 (for Node D)

NCN

410000

410001

420000

420001

430000

430001

440000

440001

NDM (master)

NDM

Node A

Node B

Node C

Node D

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.

Centralized

MAT

Data Change...

copy

updating NDM

at each node

Note

TCP/IP

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.