Call routing
222
System functions and features as of R3.0
syd-0367/1.3 – R3.0 – 03.2013
Tab. 58 Setting the routing parameters
Terminals with a separate direct dialling plan down circuit from an Aastra 400 com-
munication server can also be addressed from the public or private leased-line.
From a routing technology viewpoint this corresponds to the situation "Routing a
call from the public / private network to the PISN" (see also the descriptions as of
page 257).
An BRI-S
external interface (P-P or P-MP) can be used as the network interface.
The call charges are transmitted in ETSI format
6. 6 Least Cost Routing (LCR)
Nowadays users usually have several service providers at their disposal to rely on
for routing their calls. To ensure that calls are routed as cost effectively as possible,
it make sense to select the service provider according to the call destination (e.g. to
use a different service provider for long-distance calls compared with local calls).
A service provider will either have his own network or a licence agreement with an-
other network provider. A private leased-line network as defined for the LCR func-
tion is a service provider with special characteristics.
In this chapter the term network provider will be used for both network providers
and service providers.
6. 6. 1 Direct or indirect Selection of the Network Provider
The network provider can be selected either manually for each call or automatically
using the LCR function.
Parameter Parameter value
User configuration PISN-BN 451:
• Route 5 (route reference number)
• Number –
• Numbering plan identifier NPI E.164
Route 5:
• Trunk groups 5 (separate trunk group with BRI-S external for DDO application)
• Digit barring Use or do not use digit barring
Trunk group 5:
• Network interfaces Interface BRI-S external
• Network type Private
• Protocol DSS1
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