670 Matrix ETERNITY NE System Manual
Mobility Extension
What's this?
ETERNITY NE offers mobility to its extension users whose nature of work keeps them away from their desks 
frequently and for longer durations. 
Using mobility extensions, the extension users of ETERNITY NE can make and receive their calls from their current 
(remote) location, placing calls through the system, and can access the system just as any other normal extension 
of the ETERNITY.
How it works
ETERNITY supports two types of users: 
• Station Users: they are extension users of ETERNITY NE to whom a dedicated physical extension is 
provided on their desks. 
• Virtual Users: they are extension users of ETERNITYNE who share a physical extension, or may not 
have any physical extension allotted to them.
The facility of Mobility Extension is provided to both virtual and normal extension users using the features 
“Direct Inward System Access (DISA)” and “Call Forward”. 
How to configure
To provide Mobility Extension to users, the follow the steps described below.
• List out the Extension Users and Virtual Users and configure them first. 
• Make sure that extensions which are to be provided Mobility Extensions have the features Call Forward 
and DISA enabled in their “Class of Service (COS)”.
• Make a list of External numbers to which the Mobility Extension users will forward their calls. Configure 
these numbers in the 'Allowed List' of Local, Regional, National and International Numbers, as appropriate. 
• The Toll Control assigned to the extension will be applied when a call is forwarded to an external number. 
Make sure that the extensions which are to be provided Mobility Extension have the required “Toll Control”
level for Call Forward to the External Numbers (the numbers you have programmed in the Allowed List). 
Toll Control level is to be programmed on the Mobility Extensions.
• Configure the parameter 'External Call Forward for' on the Mobility Extensions. This parameter defines the 
types of calls for which the External Call Forwarding is to be applied. Select any one of the options, Internal 
Calls Only, Trunk Calls Only, Internal + Trunk Calls as required. 
• Program the parameter 'DISA' on the trunk lines on which Mobility Extensions users are to be provided 
access to. Make sure you select the option 'CLI Auth. Multiple Calls' in the 'DISA' parameter of the trunk 
port.