Extension settings

Date: June 26th, 2014 | Category: Hosted PBX, Hosted Phone System



Extensions are essentially the phone numbers you give to the phones connected to the PBX, which are the extensions of the PBX. That is how one phone of the PBX can call another and how external calls can be directed to a particular extension etc. Extensions have a wide selection of settings.

Creating New Extensions

To create extensions:

Configuring an Extension

Explanation and Use of Some of the Settings Under Some Tabs



?No special treatment: All calls are sent directly to the user’s extension.
Reject Call: The caller will be informed that the user does not accept anonymous calls and will not be put through to the extension.
Pretend to be busy: This setting prevents the call from going through but does not tell the caller why.
Ask for name: The caller is prompted for his or her name and then put on hold while the extension is called. After the system reads out the recorded name, the user can decide whether to accept the call, send it to the mailbox, or reject it.
Ask for name even if the caller-ID is present: This setting requests the caller’s name, even if the caller-ID is available. Only white list callers will be put directly through.


Every extension has a voice mailbox; however, the administrator can disable users’ mailboxes and use an external mailbox, such as Microsoft Exchange. This section applies only to the voice mailbox of the system. This tab has all the mailbox settings, including interface for uploading the greeting wave files, and shows the voicemails of the extension.

—Anonymous Announcement: The caller will hear the number of the extension.
—Name Announcement: The caller will hear the recorded name of the extension, if one is available.
—Personal Announcement: The caller will hear the recorded announcement of the extension, if one is available.

Hint: Even if you set “Announcement Mode” to “Personal Announcement” the system will play in some situations additional announcements.
To get rid of these you have to deactivate “Offer Camp On” and set “Mailbox Explanation Prompt” to “Not on Personal recording” in the domains voicemail-settings, for further information have a look here: Voicemail.


The email settings on this tab allow users to receive emails as notification of all incoming calls on their extension. Users can also request an audio file, or WAV file, of voicemail that has been left on their extension.

Do not send an email: No email will be sent. This option should be used when the user prefers to use only the phone to receive voicemail messages.
Send emails without attachments: Email notifications will be sent to the user for every voicemail that is received. This provides somewhat of a visual voice mailbox. The user will see the name and number of the caller and the date and time that the call arrived. To retrieve the voicemail itself, the user will need to call into the voicemail. The benefit of this mode is that emails that are relatively short can easily be read using mobile devices that support reading emails.
Send message as attachment: The user’s actual voicemails will be attached to the email notifications. This option should be selected if email is being used throughout the day and a personal computer is being used to process the email.
Keep message as new message: The message will remain in the user’s mailbox as a new message. This option has the potential danger of eventually overfilling the voice mailbox. Administrators can use the Voicemail Size setting to restrict the number of voicemail messages.
Mark message as read: The message will remain in the user’s mailbox, but the system will drop the oldest message to make room for new messages if the mailbox becomes full. The disadvantage of this mode is that the message waiting indicator will not alert the user of new messages.
Delete the message: The message will be deleted after the email has been sent. This keeps the mailbox clean, but because the system does not store voicemail messages permanently, the user will need to listen to the messages from the email client.


The registration tab is used to control the registrations for the account. You may register one or more devices for one extension. When an extension is called, the system will call all registered extensions in parallel. The first extension that picks the call up will get the call, and the other extensions will receive a CANCEL message.

Current Registrations

Displayed at the bottom of the Registrations page are the current registrations (if any exist) for the account. Important information includes the type of registration, the registered contact address (as indicated in the registration message), and the length of time the contact has been registered. “REGISTER” in the Type field indicates a standard registration for receiving calls. Other registrations address specific event types, like message waiting indications.

Clearing registrations: To clear all registrations, use the link at the bottom the page. Be sure to refresh the registration from the user agent so that you are able to call it.

Sending a reboot request: You may also send a reboot request to the phone by clicking the check sync link.

This way, you don’t have to use the web interface of the device or even go to the phone to reboot it (for example, to read new configuration data).

Manual registrations: You can also add a registration manually. Manual registrations are useful for devices like Microsoft speech server that do not support registrations.

Static registrations: Static registrations can be used to call any other number.


Permission settings allow administrators to define which features the extension can use. The permissions to jump into calls and listen to conversations may be legally restricted in certain countries, so use extra caution here. The permission to override DND is useful for assistant extensions that are responsible for screening calls.

Note: When entering extensions in this section, use a space as a separator if specifying multiple extensions. You may use wildcards, for example, an asterisk (*), to match all extensions of the domain.

Administration Permissions

Call Permissions


This tab is for setting up the buttons of the device that will register to this extension. Here you can specify which button profile you want to assign to the extension. You may select Automatic which will automatically assign the correct default profile based on the snom phone type. Or you may also select any other profile, default or any other profile that you may have created (you can create or change any of the profiles in the Buttons page of the domain, see Buttons for more details). Or you may define an extension-specific profile. If you are using a selected profile (default or otherwise) you may turn this into an extension specific profile by editing it and saving at the bottom of this page.

Article published on Wi-Manx Knowledgebase - http://kb.wimanx.com

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