Aastra Telecom 800 - Manual (Page 96)

PBX Networking Configuration
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9.2 Configuration
The possible configurations described below can be set up in the Web console
using the Telephony: Trunks menu.
9.2.1 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:
■ Two SIP trunks to the network operator which are assigned to the “A” bundle.
■ Two Q.SIG-IP connections to PBX 2 which are assigned to the “C” bundle.
■ One QSIG-IP connection to PBX 3 which is assigned to the “E” bundle.
Note: A line or a bundle cannot be seized directly. It is al-
ways performed indirectly via a route.
9.2.2 Routes
A route is a group of bundles enabling a connection in one direction. If the first
bundle of a route is fully utilized, the next bundle is seized (“bundle overflow”).
One bundle can also be used for different routes.
In the above example, a route set up for PBX 1 allows a connection 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:
■ PBX 1 first searches for a free channel in the “C” bundle.
A
B C
E
D
Bundle
PBX 1
PBX 2
PBX 3
Network
operator
SIP trunk
Q.SIG-IP connection