Call routing
272
System functions and features as of R3.0
syd-0367/1.3 – R3.0 – 03.2013
Planning the routes and trunk groups
To keep a network configuration as transparent as possible, it is a good idea always
to use the same trunk group and the same route for the same function on all the
PINXs. It makes sense, for example, to use trunk group 1 in each PINX for connec-
tions to the public ISDN network as trunk group 1 has this default value.
Settings on the source PINX (PINX 1):
• User configuration:
A permanent CLIP number is configured for internal users in Geneva, which is
transmitted unchanged along with each outgoing call to the public network.
• Least Cost Routing:
The initial digits of the numbers within the Zurich local rate zone are entered in
the LCR table and allocated a route via the routing and network operator table
(see also
"Least Cost Routing (LCR)", page 222
• Setting up routes:
– All calls sent to the public network via Zurich are routed via a separate route.
Its configuration must
NPI
=
E.164
must be set so that PINX 2 recognises a call as external and routes
it accordingly.
– All calls addressed to PINX 2 users in Zurich are routed via another route
whose configuration contains the setting
NPI
=
PNP
.
– Both routes can be allocated to the same trunk group.
• Trunk group settings:
–
Network
=
private
–
Protocol
=
PSS1
–
Automatic CLIP
=
Yes
