ASCOM Ascotel 2025 System Manual page 229

ascom Ascotel 2025/2045/2065
Network Interfaces
Network interfaces provide the access to the PBX from the outside. The settings
for the network interfaces are used to specify network-specific characteristics (e.g.
point-to-point or point-to-multipoint connection or the distribution of B channel
groups at the primary rate access).
As network interfaces are not routing elements per se, they are not discussed fur-
ther in this chapter. For more detailed information see "Part 1: System Overview".
Trunk Groups
Network interfaces with the same characteristics are grouped together in a trunk
group. For each trunk group, for example, it is specified whether the grouped net-
work interfaces are connected to a private network or the public network (see
Page 2.54).
Direct Dialling Plans
Direct dialling is used to reach internal subscribers or PISN subscribers directly
from the public network. The direct dial portion of an incoming call number is
used to link the call with a specific call distribution element (see Page 2.66).
Routes
All outgoing calls are routed to a trunk group via a route. They also include calls
routed via the Least Cost Routing function and transit calls in a PISN (see Page
2.61).
Call Distribution Elements
Call distribution elements are used to route a call to a destination or combination
of destinations. The destination (or combination of destinations) can vary depend-
ing on the allocated switch position. If the original destination is busy or does not
answer after a certain time, calls can be routed to alternative destinations (see
Page 2.69).
Switching Groups
Certain destinations and functions are selected depending on the switching posi-
tion of a switching group. Each switch group has three switch positions, which
are used for example for Day, Night and Weekend (see Page 2.77).
2.52 Routing Elements HBT_20321104_02/B0_en