System Overview
18
Aastra 470 as of R3.2
syd-0337/1.6 – R3.2 – 09.2014
2. 3
Networking Possibilities
Aastra 400 communication servers at different company locations, even beyond
national borders, can be linked together to form an enterprise-wide private com-
munication network with a common numbering plan. The following networking
types are possible:
Aastra Intelligent Net (AIN)
In an AINseveral communication servers of the Aastra 400 series can be connected
up to form a homogeneous communication system. The single systems are con-
nected with one another via the IP network, thereby forming the nodes of the over-
all AIN system One node acts as the Master and controls the other (satellite) nodes.
All the features are then available at all the nodes.
No call charges are incurred as the internal voice traffic between locations is routed
via the system’s own data network. All the AIN nodes are configured and set up
centrally via the Master.
If a node is isolated from the rest of the AIN by an interruption in the IP connection,
it restarts with an emergency configuration after a set amount of time. The connec-
tions are then routed to the public network via local links, for example with ISDN or
SIP connections, until contact with the AIN is restored.
SIP networking
Networking based on the open global SIP protocol is the universal way of connect-
ing several systems with one another via the private data network or the internet.
Aastra 400 communication platforms can be used to network up to 100 other
Aastra systems or SIP-compatible third-party systems. All the main telephony fea-
tures such as call number and name display, enquiry call, hold, brokering, call trans-
fer and conference circuits are supported. The transmission of DTMF signals and
the T.38 protocol for Fax over IP between the nodes is also possible.
Virtual and leased-line networking via BRI/PRI interfaces
With this type of With this type of connection the nodes are connected via basic
rate interfaces (BRI) or primary rate interfaces (PRI).
With virtual networking all the nodes are connected via the public ISDN network.
This type of networking is particularly well suited for geographically dispersed lo-
cations which have such a low volume of calls between locations that leased lines
or setting up a private data network are not worthwhile. The range of services avail-
able in a virtual network depends on the range of services offered by the network
provider. The DSS1 ISDN protocol is the main protocol used.
