Networking Types (Topologies) - ASCOM Ascotel 2025 System Manual

ascom Ascotel 2025/2045/2065
4.2

Networking Types (Topologies)

Taking technical, organizational and tariff conditions into account calls for a flex-
ible networking concept so that optimum customer solutions can be imple-
mented. Other factors that influence the choice of networking type are the den-
sity and nature of the communication relations. The following chapters provide
explanations of the different networking types.
4.2.1 Networking over Internet Protocol (NoIP)
With Networking over Internet Protocol (NoIP) voice data and QSIG signalling are
transmitted in the intranet as IP data packets. The intranet with QSIG / PSS1 sup-
ports the same scope of features as networking via leased lines (QSIG tunnelling).
If an existing intranet can be utized for voice connections (Quality of Service: QoS
must be supported), ISDN network call charges do not apply (tollbypass). If all the
voice channels of the IP Gateway are busy, the calls can automatically be routed
via the ISDN network (see "Testing overflow Routing in the PISN", Page 2.199).
An IP Gateway is required for each PBX.
Fig. 1.17: Networking over IP (QSIG)
1.30 Networking the Systems
PBX
ISDN
AIP
LAN
IP
PBX
AIP
LAN
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