====== 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 - 9899  | public range                                                                    |
| 9900 - 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.