User manual

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ELEPHONY FEATURES
connections in that route are unavailable, the system tries to connect to
system 3 through system 2 (alternative 2).
Figure 14:Alternative Routing
4.4.4 Network Features
In MX-ONE Telephony System, a number of common network features
are supported. Typical network features are diversion, callback, intru-
sion, and call waiting (call offer). To use the network features fully, it is
necessary to have a signaling system that can convey the necessary
information.
Two groups of common network features are distinguishable, that is,
system and user features (covering both extension and attendant
features). The system features are used by exchanges to route calls in
a controlled, rapid manner to the called destinations. A user can only
affect user features, not system features.
For connections with ISDN, system features as well as user features are
applicable. For connections with packet-based signaling, H.323, system
features as well as user features are applicable.
The network features are divided in those using standard QSIG signaling
and others using proprietary signaling. When MX-ONE Telephony
System is connected to an MD 110, all features are available for both
ISDN and H.323 signaling. Other types of signaling is also supported, for
example, DPNSS.
4.5 Customer Group
4.5.1 General
The customer group feature is used for two significantly different appli-
cations; for departments within one enterprise, or for different enter-
prises/customers sharing one system. Note that the terminology has
been changed in this revision of the system description.