Ascotel IntelliGate 2025/2045/2065
Part 3 Planning a private network 703
6.5.3 Incoming calls via a third-party system
The system uses the call number’s numbering plan identifier to determine
whether an incoming call is to be forwarded to the public network (NPI = E.164)
or within the internal network (NPI = PNP). However, some third-party systems
use only NPI = E.164 in general. To ensure that the system is nonetheless able to
route the call correctly you need to proceed as follows:
1. Set up the third-party system in such a way that outgoing calls to the public
network are not routed via the same lines as outgoing calls that remain within
the private network.
2. In the system set up two trunk groups for the lines to the third-party system:
– In the first trunk group combine all the lines via which calls to be forwarded
on to the public network are received.
– In the second trunk group combine all the lines via which calls to be for-
warded on within the private network are received.
3. Set the parameters of the first trunk group as follows:
– Protocol = PSS1
– Network type = private
– Overwrite NPI = no
4. Set the parameters of second first trunk group as follows:
– Protocol = PSS1
– Network type = private
– Overwrite NPI = PNP
6.5.4 Incorrect CLIP indication
Third-party systems may not use the numbering plan identifier of a CLIP number
to create a correct CLIP. This is why it is possible that the CLIP number of a call
from a third-party system is not displayed correctly.
The settings need to be adapted accordingly for such cases (see "Identification
Elements", page 178).
6.6 Cordless systems in a private leased-line network
The DECT cordless system is tied to a single system. The radio area cannot be
increased by networking several systems.
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