ASCOM Ascotel 2025 System Manual page 761

ascom Ascotel 2025/2045/2065
If subscriber 300 wants to reach a subscriber in the public network, he dials 0
(exchange access prefix) followed by the subscriber number, e.g. 032 6241399.
For the operation to be exactly the same for a user of system 1, you need to set
up the following configurations.
1. All the subscriber numbers in the Centrex range, i.e. 300 and 350, are created
as PISN subscribers in system 1.
2. A route is defined (route 2) with the trunk group (trunk group 1) that contains
all the exchange lines to the Centrex. PISN subscribers 300 and 350 are allo-
cated the corresponding route (route 2). The protocol in the trunk group must
be configured to DSS1 and the type to "Private".
3. An additional route (route 1) is defined for calls to the public network. This is
the route configured as the route for exchange output for internal subscrib-
ers. Trunk group 1 is also configured in this route.
4. In addition, however, the parameter "Send Access Code" is configured with
digit "0" in route 1. This is the exchange access prefix for the Centrex.
If a subscriber in system 1 dials the exchange access prefix 0 followed by the pub-
lic number, e.g. 032 6241399, system 1 will seize a line from route 1 and imme-
diately dial the digits entered under "Send Access Code", i.e. in this case "0".
Only then does the public number follow. Centrex sets up a connection to the
public network.
Note:
Calls from the public network are routed via Centrex to System 1. The
CLIP number is an exchange access prefix by default since system 1 is
simply an internal subscriber as far as Centrex is concerned. For the CLIP
to be correctly displayed on system 1, the exchange access prefix needs
to be deleted again from the PBX. To this end, "Truncate CLIP = 0" is
entered in the corresponding trunk group. This means that when a CLIP
number beginning with "0" is received, the "0" is truncated.
3.130 Planning a Private Network HBT_20321104_03/B0_en