Call routing
209
System functions and features as of R4.1
syd-0570/1.2 – R4.1 – 08.2016
• Network provider required (in the example network provider B).
• The code information (in the example for network provider B) used by B to check
whether the caller is a subscriber to his network.
Network provider A can respond to the call in the following way:
• He either routes the destination number on directly using his own numbering plan.
• He takes the call and waits for code information, such as the destination number, to
be transmitted by the caller in DTMF mode.
6. 5. 2 LCR function
To be able to make outgoing phone calls, an internal user normally dials an exchange
access prefix first.
If the LCR function is deactivated, the communication server routes the call in accord-
ance with the exchange access prefix dialled (see "Exchange access authorization",
page 203).
If the LCR function is activated and able to analyse the phone number dialled, the
phone number will be routed in accordance with the configured LCR criteria. The ex-
change access prefix is not analysed by the LCR function.
The LCR function can be systematically activated or deactivated ( =k3). If it is acti-
vated, it can be deactivated for individual users in the permission set( =cb).
The LCR function is configured in =k3. It contains the table of network providers,
the routing table and LCR table. The meaning of these tables is explained in detail
in the next chapters.
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