# How do I assign phone numbers and extensions to groups?

{% hint style="info" %}
The function *Groups* is **available only to customers on sipgate classic** . On sipgate neo it is integrated in a different form.
{% endhint %}

If you would like to assign phone numbers or internal extensions within a group, please proceed as follows:

First go to the [**group management**](https://app.sipgate.com/groups). Then select the group for which you would like to assign a phone number or extension. You can now use Visual Routing to assign a phone number or extension and assign the desired people to the group.

For technical reasons, the following extensions cannot be assigned:

* 110 (police emergency number Germany)
* 111 (emergency number New Zealand)
* 112 (fire and rescue emergency number Germany)
* 113
* 114
* 115 (government information number Germany)
* 116
* 117
* 118
* 119
* 211
* 311
* 411
* 511 (USA hotline number)
* 611
* 711 (USA long-distance directory assistance)
* 811
* 911 (emergency number USA)
* 999 (emergency number UK)
* 9900-9999


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