Aastra Ascotel IntelliGate 2025 - Page 678

Ascotel IntelliGate 2025/2045/2065
678 Planning a private network Part 3
Calls from systems that are not directly connected to the public network can be
routed via several systems to the gateway PINX. These systems perform a transit
function. They are thus called transit PINX.
The system in which a call is set up is called the originating PINX. The system to
which the call's destination subscriber is connected is called the destination PINX.
Fig. 3.65: The role of the individual systems in dealing with public network traffic
For incoming traffic, DDI numbers have to be created at a gateway PINX for all the
subscribers in the private leased-line network who are to be directly reachable
from the public network via the system (see "Direct dialling in at the gateway
PINX", page 679).
The following points need to be taken into account for outgoing traffic:
• Ensure on the originating PINX that a call to the public network is recognisable
as such (see "Identification of calls to the public network", page 680).
• Configure the transit and gateway PINX so that they forward a call to the public
network (see "Definition of the transit route", page 681).
haz0800aaena0
Gateway
PINX
Transit
PINX
A1
B2
A1 calls B1
A2 calls B2
A2
B1
Originating
PINX
Terminating
PINX