Call routing
213
System functions and features as of R3.0
syd-0367/1.3 – R3.0 – 03.2013
Dialling the emergency number
Depending on the switch group and switch position, the emergency number dials
one of the three stored phone numbers. The phone numbers must have an ex-
change access prefix.
The external digit barring is bypassed.
The call is routed via the user’s route, provided the stored phone number does not
already have a prefix for exchange access with route selection.
The call charges are logged in accordance with the user configuration, provided
the stored number does not already have an exchange access prefix that regulates
call charge logging (e.g. Exchange access, Private).
Dialling from SIP terminal
For SIP terminals, the international number format beginning with the "+" sign is
supported (canonical number). The communication server changes the "+" to a "0"
(Exchange access business). The external call number may also contain the following
characters: "+", "/", "(", ")" and "blank". These signs are filtered out by the communica-
tion server before dialling. If a call number contains the country code as well as the
national prefix, the national prefix can also be automatically filtered out (see "Dial-
ling internal destinations via external call numbers", page 179).
Dialling an external number assigned to an internal destination
If an external call number is assigned to an internal destination, the outgoing call
will be routed to the internal destination under certain conditions (see "Dialling in-
ternal destinations via external call numbers", page 179).
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