Canonical Dial Lookup - Siemens A31003-D3000-M100-01-76A9 Administrator User Manual

Administration
Dialing

3.12.2 Canonical Dial Lookup

166
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--- Admin
|--- Local Functions
|--- Locality
|--- Canonical dial
|--- Internal numbers
|--- External numbers
|--- External access code
|--- International gateway
Related Topics
The parameters given here are important for establishing outgoing calls and for
recognizing incoming calls.
In the local phonebook, and, mostly, in LDAP directories, numbers are stored in
canonical format. In order to generate an appropriate dial string according to the
settings in Internal numbers and External numbers (Canonical Dialing Configu-
ration), internal numbers must be discerned from external numbers. The
canonical lookup table provides patterns which allow for operation.
Furthermore, these patterns enable the phone to identify callers from different
local or international telephone networks by looking up the caller's number in the
phone book. As incoming numbers are not always in canonical format, their
composition must be analyzed first. For this purpose, an incoming number is
matched against one or more patterns consisting of country codes, national
codes, and enterprise nodes. Then, the result of this operation is matched against
the entries in the local phone book.
INFO: To make sure that canonical dial lookup works properly, at
least the following parameters of the phone must be provided:
– Local country code (Canonical Dialing Configuration)
– Local area code (Canonical Dialing Configuration)
– Local enterprise code (Canonical Dialing Configuration)
Up to 5 patterns can be defined. The Local code 1 ... 5 parameters define up to 5
different local enterprise nodes, whilst International code 1... 5 define up to 5 inter-
national codes, that is, fully qualified E.164 call numbers for use in a PSTN.
Data required
• Local code 1 ... 5: Local enterprise code for the node/PBX the phone is
connected to. Example: "722" for Siemens Munich.
OpenScape Desk Phone IP, Phone Administration, Administrator Documentation
A31003-D3000-M100-01-76A9, 02-2013