User guide

Configuration 161
PBX Networking
Configuration
The possible configurations described below can be set up in the
Web console using the Telephony: Trunks menu.
Bundles
A bundle is a group of lines of the same type and direction. A line
can only be assigned to one bundle.
Example of a PBX network with bundles
In the above example, the following bundles are configured for
PBX 1:
z Two S
0
lines in a multi-terminal configuration to the network
operator which are assigned to the “A” bundle.
z Two S
0
point-to-point connections to PBX 2 which are assigned
to the “C” bundle.
z One S
0
point-to-point connection to PBX 3 which is assigned to
the “E” bundle.
Note: A line or a bundle cannot be seized directly. It is always
performed indirectly via a route.
Routes
A route is a group of bundles enabling a connection in one direc-
tion. If the first bundle of a route is fully utilized, the next bundle
is seized (“bundle overflow”). One bundle can also be used for dif-
ferent routes.
In the above example, a route set up for PBX 1 allows a connec-
tion to PBX 2. Bundle “C,” “E” and “A” are assigned to this route.
If a user connected to PBX 1 wants to reach a party in PBX 2, lines
will be seized in the following order:
A
B
C
E
D
Bundle
PBX 1
PBX 2
PBX 3
Network
operator
Trunk line
Point-to-point
connection