Voix manager is a full switchboard management application with all the usefull function to do the job, and why not? if you need a powerful phone this is the right choice too.

User status.
The operator is able monitor status of all current Asterisk PBX user accounts connected to a particular server.

User control.
The operator is able to interact with all user accounts logged to an asterisk pbx.

In - out activity
The operator is able monitor the status of all incoming and outgoing calls, then take the appropriate action, place on hold, transfer, and send to voice mail.

Dockable Interface
VoixManager components can be placed everywhere on the dispay.

Contex menu and key shortcuts
Users can speed up their operations using contexl menu and key shortcuts

Organize user extensions
Extensions can be grouped or hidden, and the group can be expanded or contracted by pressing the relevant buttons.
Extensions can be sorted and moved from one group to another via drag and drop, Every group has its own sorting method (by name, by number or custom sorting).

Address Book
A powerful address book where users can store his or her contacts with support for multiple numbers:

Custom search
Customized search is available to the operator enabling to look for contacts in the Voix Manager address book by the following criteria:
First Name
Last Name
Company Name

Call reports
A complete calls report show all call activity. From the call report the user can launch a call double clicking an item.

Multiple audio device support
The user can choose any connected audio device, and configure them to act as ringing audio device, input/output audio device, supporting every kind of audio device; USB, Bluetooth, internal and external audio cards.

Application accessibility
External applications can communicate with VoixManager through a local TCP socket - in this way you can launch a call from an external application like a web browser.

Script executing
Voix manager can launch an application an execute custom script on incoming and outgoing events.

Features
IAX 2 protocols		Extensions Manager
Exensions registration status and reachability		Extensions Monitor (Who is talking and to whom)
Click an extension to dial		Calls status
Chan. Zap activity		Chan. Zap status
Chan. ISDN activity		Chan. ISDN status
Call transfer (Consultative and Blind)		Drag and drop Transfer
Do Not Disturb		Call forwarding
Redial		Quick dial
Hold function		Hold status (number of users waiting)
Missed call Log		Dial Missed call
Organize Extensions into Groups		Hide / show Extensions or Groups
Extensions and Groups sorting		Extension interaction
Queue monitoring and interaction		Parking lot monitoring and interaction
Voice Mail Notification		Access voice mail message with one button
Address book		Transfer to User Voice Mail
Mute		Logs
Automatic user registration		Account password encryption
Support for multiple audio devices		DTMF tones sending
Available codecs GSM, ulaw, alaw, speex, ilbc		Echo cancellation
Adaptive Jitter Buffer		Custom ring tones (soon)
Unlimited Inbound		Unlimited Outbound
Privacy rules		Settings Lock
Dynamic Agent login to multiple queues		Key shortcuts
Dockable Interface		Contextual menu