CHAPTER 3 NDA-24318
Page 32
Issue 1
OFFICE DATA PROGRAMMING
3.3 Service Conditions
1. To send/receive voice information, each node will use an IPTRK circuit card. At this time, the IPTRK
circuit cards in the self-node and its connected node(s) can be either in 1-to-1 ratio, respectively, or in 1-
to-n (n=2 or more) relations (referred to as P o int-to-Multipoint connection).
2. Be sure to use a router for connections between IP network and IPTRK circuit card.
3. A maximum of two IPTRK circuit cards per UNIT are allowed. Accordingly, a total of 16 IPTRK circuit
cards can be accommodated per IMG.
4. Only voice and FAX (G3) information can be sent/received via IPTRK circuit card.
5. A call cannot be established/routed across multiple IP networks. See the following figure.
6. When multiple IPTRK circuit cards are used for node-to-node connection and all the lines on an IPTRK
are busy, alternate routes are available (see the figure below). However, if a route r ca nnot be used, all the
related IPTRK routes are made unavailable.
IPTRK
IPTRK
Node A
Routing: NG
Routing: OK
IPTRK
IPTRK
Node B
IP Network #1
IP Network #2
IPTRK
IPTRK
Node A
IPTRK
IPTRK
Node B
Intranet
IPTRK
Node A
IPTRK
IPTRK
Node B
Alternate Routing: OK
As shown, when multiple IPTRK circuit cards exist, alternate routes are available:
Alternate Routing: OK
Symbols:
IPTRK: IP Trunk
Intranet
Intranet
BUSY BUSY
IPTRK