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Number ranges

We use special telephone number ranges at the events.

Range	Use / Reserved for
1000 - 1999	Orga / Event / Venue
2000 - 2099	Eventphone / PoC
2100 - 8999	public range
9000 - 9999	Internal, special services, services that offer added value for several users.

Just because a number is not listed in the phone book does not mean that it is not used.

If, during the creation of a number in GURU, a message appears telling you that the extension is already in use, then this is correct. There is no reason to open a support ticket.