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VoIP gateway IP400 version 5.01
7.2.6 Configuration of multiple routes for a dial prefix
You can specify different routes for different call sources for the same dial prefix,
with the effect that the routing process is dependent on the call source and not
only on the called number.
Fig. 31 Different ways of call routing depending on the calling interface
Fig. 31 on page 98 shows an example of such a configuration. Here the call
number
0
is switched to number
12
(switchboard position) for calls from the
exchange line, but to the exchange line for all other calls.
7.2.7 Call forwarding
It can make sense to define several routes for calls from the same call source with
the same dial prefix.
The gateway's routing process always uses the first suitable route. If a connection
cannot be established using this route however, a further attempt can be made
using another route. Various types of call forwarding can be implemented in this
way.
• If an attempt is made to switch a call using a route and this call is unable to
be set up due to missing local resources (e.g. no exchange line available, see
Table 14 on page 100), a search will immediately be made for a further route.
If several exchange lines are connected to the gateway for example, this
allows the calls to be distributed successively around the exchange lines