System Functions and Features as of I7.9
136
Call routing
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5
Call routing
This Chapter describes the interplay between the routing elements for the various types
of traffic: call routing for internal, incoming and outgoing traffic. Other topics include
Least Cost Routing, exchange-to-exchange traffic, transit routing in the private leased-
line network, overflow routing and break-out.
5. 1
Overview
This chapter is divided as follows:
•
Internal traffic (as of
•
•
•
Least Cost Routing (LCR) (as of
)
•
Exchange-to-Exchange Connection (as of
)
•
Transit Routing in the Private Leased-Line Network (as of
)
•
Testing overflow routing in the PISN (as of
•
Break-Out (as of
5. 2
Internal traffic
5. 2. 1
Internal Destinations
Many internal destinations are allocated numbers in the internal numbering plan.
These destinations are dialled directly by dialling these numbers or the names allo-
cated to them.
The table below shows the internal destinations, their availability and their dialling
options.
Tab. 28
Internal destinations and their availability
Internal destinations
Remarks
Internal users assigned one or more termi-
nals:
Selectable using number and name selection
• AD2 terminals
• Terminals on the S bus
• Analogue terminals
