Figure 3-18 Ring Down Calls On A Fusion Network - NEC NEAX 2400 IMX Manual

SYSTEM CONFIGURATION
System Considerations
3.4.2 Central Office Incoming Call (Ring Down)
Each node can specify a terminating node for Ring Down calls using the system data. In this example,
Node A and Node D specify Node C and Node E as the terminating node respectively. The terminating
node is assigned using the ASYDL command (SYS 1, Index 640). Note that self-FPC is assigned at the
terminating node.
Note 1: When assigning the data regarding the call termination to ATT, be sure to develop the unified data at each
node.
Note 2: Terminating node cannot be assigned differently at each tenant (TN).
Note 3: When the connection routes (C_RT) are all busy, any attempted call via C.O. Line is not connected to the
ATT. As a result, the calling party is provided with the Ring Back Tone (RBT), and even when a C_RT later
becomes idle, the RBT connection is still maintained and the C.O. call does not terminate to the ATT.
ASYDL - Node A
Index 640
FPC = 3 (Node C)
Node providing ATTCON/DESKCON
Data Programming (Node A)
ASYDL - Node C
Index 640
FPC = 3 (Node C)
self-node FPC
Data Programming (Node C)
CHAPTER 3
Page 26
Revision 3.0
PSTN
Fusion Network
Node A
FPC = 1
Ring Down Call
Node C
FPC = 3
Ring Down Call
PSTN

Figure 3-18 Ring Down Calls on a Fusion Network

ND-70185 (E)
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PSTN
Node D
FPC = 4
Node B
Ring Down Call
Node E
FPC = 5
: Node having ATTCON
: Node w/o ATTCON
ASYDL - Node D
Index 640
FPC = 5 (Node E)
Node providing ATTCON/DESKCON
Data Programming (Node D)