Matrix ETERNITY NE System Manual 849
Virtual Extension
What’s this?
The Virtual Extension feature of ETERNITY NE enables multiple users to share one telephone instrument as their 
extension, yet be considered as individual extensions by the system, with distinct extension properties and class of 
service. 
Such shared extensions are called Virtual Extensions, as their users do not have individual phones for their use. 
Virtual extensions are useful in laboratories, common rooms, dormitories, shop floors, and wherever it is not 
feasible to provide dedicated telephone instruments to individual extension users. Virtual extensions allow you 
make optimum use of the existing phones without investing in new ones.
ETERNITY NE supports 20 Virtual Extensions.
How it works
The shared telephone instrument is called the Master Extension. A Master Extension can be an SLT, a DKP or the 
Matrix Extended IP Phone. 
• Virtual Extensions are assigned to the Master Extension. A Master Extension can have multiple Virtual 
Extensions, but a Virtual Extension can have only one Master Extension.
• The Virtual Extension functions as any SLT, DKP or SIP extension of ETERNITY NE. It can be assigned all 
features and facilities, like Class of Service, Toll Control, Call Forward, Voice Mail, just like any other 
extension of ETERNITY NE.
• Incoming calls to a Virtual Extension will ring on the Master Extension.
• All incoming, outgoing, internal and external calls of the Virtual Extensions are recorded in the Station 
Message Detail Records.
• To make outgoing calls, the Virtual Extension user must use the feature “Walk-In Class of Service”.
• The Virtual Extension user is logged out of the Master Extension according to the Walk Out mode 
assigned to it: Walk out automatically on completion of call or Walk out on user request.
How to configure
To configure Virtual Extensions, 
• Open Jeeves.
• Log in as System Engineer.
• Click the Advanced Settings link.
• Scroll to Virtual Extensions under Advanced Settings and click the link.