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Configuration
The Dial Plan mainly is a collection of normalizing rules for phone numbers. These rules are responsible for
making it possible, that the user can call phone numbers in the familiar way, independent from for example his lo -
cation. The result of normalizing should always be a phone number in the E.164 format, as that is what is used as
standard in Lync. Every site should have its own Dial Plan, as the rules are highly dependent on local circumstances.
Example 3.5. (E.164-Number: +498931769876)
+49 = Germany
89 = Prefix Munich
3176 = participant number (Microsoft)
9876 = extension
End of Example »
The format has to be exactly like the example, no spaces or separators may be used. Normalizing rules usually
are configured for:
• local calls
• long-distance calls
• international calls
• internal calls
• emergency calls
For all those cases, E.164 numbers should be the result. These then are automatically recognized by Lync and
otherwise redirected to the appropriate gateway. There, through the use of additional rules, they are adjusted to the
requirements of the existing telephone infrastructure.