# Overview
- [Configurations](#bkmrk-configurations) - [Additional Configurations](#bkmrk-additional-configura) - [Adding an Extension](#bkmrk-adding-an-extension) - [Editing an Extension](#bkmrk-editing-an-extension) - [Deleting an Extension](#bkmrk-deleting-an-extensio) - [Additional Notes](#bkmrk-additional-notes)
An **extension** is an assignment to a physical phone, softphone, voicemail box, or any similar device configured within the system. A phone must have an extension assigned to it to receive calls.

A user cannot configure his or her extension. Only an administrator can update an extension.

## Configuration Options
**Field** **Type** **Description** **Required**
ExtensionAlphanumericExtension identifier Numeric digits are recommended if the extension must be dialed from a phone. Yes
Device TypeList Extension device type
**Type** **Description**
SIPSIP (Session Initiation Protocol) device
IAX2IAX2 (Inter-Asterisk eXchange) device
DAHDIDAHDI (Digium Asterisk Hardware Device Interface) device
VIRTUALVoicemail-only or call-forwarding extension, not connected to any physical device or softphone
SIP-VIRTUALAdditional extension on a device that supports multiple extensions
VIRTUAL and SIP-VIRTUAL device types do not use extension licenses
Yes
CallerID NameFieldCaller ID name – displayed on devices that support caller ID Yes
UserList The portal user associated with the extension (refer to [Users](https://docs.intellasoft.net/books/web-portal-dL9/page/users) for more information) – select if a specific user requires permission to access VIRTUAL and SIP-VIRTUAL device types do not use extension licenses. Yes
AgentValueIndicates if the extension is associated with an agent Read-only
Status Value Status of the device registered to the server
**Status** **Description**
OK The device is registered and configured IP and port are always displayed for this status.
UNREACHABLEThe system cannot reach a registered device An UNREACHABLE status could indicate an issue. Contact your system administrator if you suspect a problem.
UNKNOWNThe system has given up trying to contact an UNREACHABLE device
UNMONITOREDEndpoint is not monitored IP and port are always displayed for this status. An UNMONITORED endpoint can still be called. When this endpoint is called, the system will try to reach it until it times out. If the endpoint is unresponsive, the call fails.
BLANKNo device is registered to this extension A blank status could indicate an issue. Contact your system administrator if you suspect a problem.
Read-only
IPNumericInternet protocol address (IPv4 format – e.g. 255.255.255.255) assigned to the extension Read-only
PortNumericDevice signaling port Read-only
VoicemailCheckboxEnables or disables voicemailNo
Voicemail PinNumericVoicemail PIN – enabled if voicemail is enabled Yes if voicemail is enabled
Voicemail EmailEmailEmail address where voicemail messages are sent – enabled if voicemail is enabled No
Controls n/a Extension tools
**Icon** **Description**
[![image.png](https://docs.intellasoft.net/uploads/images/gallery/2024-03/scaled-1680-/bx2image.png)](https://docs.intellasoft.net/uploads/images/gallery/2024-03/bx2image.png) Opens the [Voicemail configuration manager](https://docs.intellasoft.net/books/web-portal-dL9/page/voicemail)
[![image.png](https://docs.intellasoft.net/uploads/images/gallery/2024-03/scaled-1680-/TfCimage.png)](https://docs.intellasoft.net/uploads/images/gallery/2024-03/TfCimage.png) Opens the Phone Buttons configuration manager
[![image.png](https://docs.intellasoft.net/uploads/images/gallery/2024-03/scaled-1680-/hXLimage.png)](https://docs.intellasoft.net/uploads/images/gallery/2024-03/hXLimage.png) Delete extension – see [Deleting an Extension](#bkmrk-deleting-an-extensio) below
n/a
## Additional Configuration Some extensions require additional configuration, depending on your organizational needs. These configuration options are described under [Phone Configuration](https://docs.intellasoft.net/books/web-portal-dL9/page/phone-configuration). Contact your system administrator for more information. ## Adding an Extension 1\) Click **Extensions** on the Navigation pane. The Extension Settings pane appears. 2) Click **New Extension** on the upper menu. [![image.png](https://public.intellasoft.net/uploads/images/gallery/2024-07/scaled-1680-/EJ9image.png)](https://public.intellasoft.net/uploads/images/gallery/2024-07/EJ9image.png) 3\) Enter the fields as required. Refer to [Configuration Options](#bkmrk-configurations) above. 4\) Click **Save New Extension**. The new extension has been added. ## Editing an Extension 1\) Click **Extensions** on the Navigation pane. The Extension Settings pane appears. 2) Double-click the extension row you want to edit. You should see a row editor. 3\) Make any desired edits. Refer to [Configuration Options](#bkmrk-configurations) above. 4\) Click **Save.** ## Deleting an Extension

Warning: Even if an extension is inactive or disconnected, it may have call forwarding enabled, or the associated voicemail box may be used elsewhere. Ensure all functions related to the extension are unused before removing it.

1\) Click **Extensions** on the Navigation pane. The Extension Settings should appear. 2\) Under the Controls column, click the red **X** for the extension you want to delete. 3\) Click **OK** to delete the extension. ## Additional Notes - The number of available extensions depends on your IntellaSoft licensing. You may need to purchase additional licenses to add more extensions. Contact your IntellaSoft sales representative for more information.