NEC NEAX2400 ICS, Руководство по программированию

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NEAX2400 IPX Feature Programming Manual
NDA-24297, Issue 1
Page 371
FCCS Networking via IP F-36
Operating Procedure
No manual operation is required.
Service Conditions
FCCS over IPTRK
1. To send/receive voice information, each node shall use IPTRK circuit card(s). At this time, the IPTRK
cards in the self-node and its connected node(s) can be either in 1-to-1 ratio, respectively (called point-to-
point connection), or in 1-to-n [n=2 or more] relations (called point-to-multipoint connection). For point-
to-point connection, FCH-FGH card is used for FCCS signaling.
2. Be sure to place a router for connections between IP network and IPTRK/FGH card.
3. A maximum of 2 IPTRK cards per unit can be installed. Accordingly, a total of 16 IPTRK cards can be
accommodated per IMG.
4. Only voice and FAX (G3) information can be sent/received via IPTRK card.
5. Only a single FCH-FGH card can be connected to a router (i.e. an FCH-FGH, connected to a router, cannot
control the IPTRK card(s) connected to the other router). Accordingly, redundant configuration of FCH-
FGH is not available.
6. A call cannot be established/routed across multiple IP networks. See the figure below:
7. When multiple IPTRK cards are used for node-to-node connection and all the lines on an IPTRK are busy,
alternate routing is available (see the following figure). However, if a router or FCH-FGH card cannot be
used, all the related IPTRK routes are also made unavailable.
8. When using IPTRK card for point-to-multipoint connection, the port, assignable for FCCS signaling, is
the 1st LEN of each HW block. Other ports are to be used for speech channels.
9. For point-to-multipoint connection, a D-channel, assigned on an IPTRK card, can control the B-channels
of the same card, and also of a maximum of 7 other IPTRK cards.
IPTRK IPTRK
IPTRK IPTRK
Node A Node B
Routing: OK
Routing: NG
IP Network #1
IP Network #2
As shown, when multiple IPTRKs exist, alternate routing is available:
Node A Node B
IPTRK
IPTRK
IPTRK
IPTRK
Internet/
Intranet
Alternate Routing: OK
BUSY
Node A Node B
IPTRK
IPTRK
IPTRK
IPTRK
BUSY
Alternate Routing: OK
Internet/
Intranet
Internet/
Intranet