Data Memory Configuration; Figure 2-7 Network Data Memory - NEC NEAX 2400 IPX Manual

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 primary memory.
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.
410001
410000
Centralized
MAT
Data Change...
Telephone Number Change
410000 410001 (for self-Node)
420000 420001 (for Node B)
430000 430001 (for Node C)
440000 440001 (for Node D)
Note: The data must be manually transferred with the CBCN command when the Fusion system is
configured for the first time or the system is once initialized at the NCN.
NCN
Node A
updating NDM
at each node
TCP/IP
NDM (master)

Figure 2-7 Network Data Memory

NDA-24299
Data Memory Configuration
Figure 2-7 shows how a telephone number change
Node B
copy
LN
Node C
copy
LN
Node D
copy
LN
GENERAL
420001
420000
NDM
430001
430000
NDM
440001
440000
NDM
CHAPTER 2
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