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NDA-24299
CHAPTER 2
Page 7
Revision 1.0
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 primary memory.
shows how a telephone number change
is performed in a Fusion network.
Figure 2-7 Network Data Memory
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.
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
NDM
NDM
LN
LN
LN
Node A
Node B
Node C
Node D
Centralized
MAT
Data Change...
copy
copy
copy
updating NDM
at each node
TCP/IP
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.