NEC UNIVERGE SV7000 - EMERGENCY CALL

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CHAPTER 4 OFFICE DATA DESIGN
(7) When System Initialization or ACDP Initialization are executed at VNDM Center node (the node ac-
commodating the master VNDM data) or the other VNDM Local node in an FCCS network, re-estab-
lishing VNDM data in the FCCS network is automatically carried out to restart ACD FCCS service.
VNDM (Variable Network Data Memory)
• VNDM is the data memory concerning Monitor number and OAI Facilities (Subscriber) Information.
• VNDM is controlled by one node (VNDM Center Node) in an FCCS network and transferred to the other
nodes.
Note: If the Program Load or Non Load initialization is executed, this processing will not be carried out. When
VNDM Local node is re-started up even though VNDM Center node remains in a system down state, VNDM
Local node waits a maximum of 10 minutes for the VNDM Center node's start up. After 10 minutes of the
waiting, VNDM Local node comes on-line as a Standalone ACDP (The system message “26-Y” is issued.).
If VNDM Center node is re-started up after VNDM Local node has been re-started as a Standalone ACDP,
the FCCS link can be automatically re-established (The system message “26-Z” is issued.).
C-VNDM
L-VNDM
L-VNDM
L
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FCCS Link FCCS Link
VNDM Center Node VNDM Local Node
VNDM Local Node
, : Merge the received L-VNDM (Local-VNDM) data to C-VNDM (Center-VNDM) data
Example: When System initialization is executed at VNDM Center node, re-establishing VNDM data
is automatically carried out as follows (VNDM Center node requests the all VNDM Local
nodes in the FCCS network to send their L-VNDM data to VNDM Center node, in order
of lower FPC number):
FPC No.=12
FPC No.=11
FPC No.=13
Initial