System Functions and Features as of I7.9
176 Call routing
syd-0200/3.0 – I7.9 – 11.2009
Example
In the event of an alarm, an alarm system independent of the PBX transmits a mes-
sage to an alarm headquarters via an ISDN card on an S terminal interface (e.g. a
text or a file).
Fig. 75 Overview of a configuration for emergency applications
Scope
The priority setting is activated only in the case of direct dialling, not however in
the case of call forwarding, CFNR etc
In a private network the prioritization of an outgoing connection is only possible
on the PBX connected to the public network (gateway PINX).
In principle all internal users can be defined with External priority = emergency,
even if there are fewer B channels to the public network than authorized users.
Connections seized by users who also have priority will not be cleared down.
Note:
Network interfaces used for external priority calls must be connected
with the public network and active. It is advisable to provide a specific
network interface for this purpose and to check it on a regular basis. Con-
nections to the public network via analogue network interfaces cannot
be cleared down.
AB
3
)NPUT¬DEVICES¬FOR
EMERGENCY¬SITUATIONS
SWITCHES¬KEYS¬PHONES¬ETC
)NDEPENDENT¬ALARM¬SYSTEM
-ODEM
4ERMINAL¬
!DAPTER
0UBLIC¬
PRIVATE¬NETWORK
2EMOTE¬ALARM
HEADQUARTERS
POLICE¬EG
4
4
0"8
HAZAAEND
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