Central Office Incoming Call (Ring Down); Figure 3-20 Ring Down Calls On A Fusion Network - NEC NEAX 2400 IPX Manual

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 with use of the ASYDL command (SYS 1, Index 640). Note that self-FPC is assigned
at the terminating node. See
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 ringback tone, and even when a C_RT later becomes
idle, the ringback tone 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
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Revision 1.0
Figure 3-20.
PSTN
Node A
FPC = 1
Ring Down Call
Node C
FPC = 3
Ring Down Call
PSTN

Figure 3-20 Ring Down Calls on a Fusion Network

NDA-24299
Fusion Network
Node D
FPC = 4
Node B
Node E
FPC = 5
ASYDL - Node D
PSTN
Index 640
FPC = 5 (Node E)
Node providing
ATTCON/DESKCON
Data Programming (Node D)
Ring Down Call
: Node having ATTCON
: Node w/o ATTCON