Aastra Ascotel IntelliGate A150 - Virtual Networking in the ISDN Network

System Functions and Features as of I7.9
312 Features
syd-0200/3.0 – I7.9 – 11.2009
8. 2. 4. 2 Virtual Networking in the ISDN Network
In a virtual networking or in a virtual PINX in the public network the following con-
ditions have to be met:
• The feature is supported end-to-end by the public ISDN network.
• Service compatibility between private ISDN and public ISDN is guaranteed for
the feature.
Example: Callback if busy
"Callback if busy" is supported within the private network. Compatibility for this
feature between private network (QSIG protocol) and public network (DSS1 proto-
col) is guaranteed. It is possible to activate callback between A and C and between
B and C (Fig. 161, page 312) if the public network supports the feature end-to-end.
Fig. 161 Using a feature via the public network
Note:
With the overflow procedure (see "Testing overflow routing in the PISN",
page 222) calls within the PISN are routed via the public network. In this
case the conditions for networking with DSS1 apply. The ranges of serv-
ices available can be restricted for such calls.
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