Aastra OpenCom 131 User Guide - Page 161

PBX Networking Configuration Note: Q.SIG-IP cannot be operated using a connection with NAT. For a Q.SIG-IP connection, a branch connection or another VPN connection is required. 12.3 Configuration The possible configurations described below can be set up in the Web console using the Telephony: Trunks menu. 12.3.1 Bundles A bundle is a group of lines of the same type and direction. A line can only be assigned to one bundle. Network operator PBX 1 A E BC D PBX 2 PBX 3 Bundle Trunk line Point-to-point connection Example of a PBX network with bundles In the above example, the following bundles are configured for PBX 1: ■ Two S0 lines in a multi-terminal configuration to the network operator which are assigned to the "A" bundle. ■ Two S0 point-to-point connections to PBX 2 which are assigned to the "C" bundle. ■ One S0 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. 12.3.2 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. 159