> For the complete documentation index, see [llms.txt](https://docs.theconfigteam.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.theconfigteam.com/prebilt-ewm/configuration-guide/configuring-prebilt-features/communication-hub.md).

# Communication Hub

Communication Hub (Operator messaging) is available with PreBilt for EWM versions 4.11 and newer. It enables two-way communication between the warehouse office and PreBilt operators, as well as operator-to-operator messaging with PreBilt.

## Number Range Intervals

{% embed url="<https://www.youtube.com/watch?index=8&list=PL74nuGSklShmCkIxrsg18BeS9R5MSWlhq&v=wA61U0tTQl0>" %}

{% hint style="info" %}
**Note**

Number range intervals must be defined for every client for each applicable warehouse
{% endhint %}

To specify these navigate to transaction *SNRO > Object “/TCTM/EOM” > Display > Go To > Interval Editing (F7)*

Enter the Warehouse, select the 'Change Interval&#x73;*'*

<figure><img src="https://1016750988-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F7lFTpSLijn44pippdL6u%2Fuploads%2Fgit-blob-549790b34d2bb749c1c77ff65f0e13f7bee47554%2Fimage%20(157).png?alt=media" alt=""><figcaption><p>Warehouse Selection</p></figcaption></figure>

Specify a range from 0000000001 to 9999999999. For Example:

<figure><img src="https://1016750988-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F7lFTpSLijn44pippdL6u%2Fuploads%2Fgit-blob-c4c78e2ac07f3817fd2a6b064db734407074771e%2Fimage%20(158).png?alt=media" alt=""><figcaption><p>Number Range Interval Setting</p></figcaption></figure>

Click Continue if you receive the following notification

<figure><img src="https://1016750988-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F7lFTpSLijn44pippdL6u%2Fuploads%2Fgit-blob-6792cfa1c6066d4262919b2b70d0c296bc86fabe%2Fimage%20(159).png?alt=media" alt=""><figcaption><p>Number Range Information Message</p></figcaption></figure>

If you have **NOT** been provided with a BC Set, please complete the Manual Installation Steps.&#x20;

If you have been provided with a BC Set, complete the installation by following the [BC Set Installation Steps](https://docs.theconfigteam.com/prebilt-ewm/~/revisions/93Vhv3xw5PDfe7P0I18j/configuration-guide/configuring-prebilt-features/communication-hub/communication-hub-1).