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Mobile Twinning on Avaya IP Office, enabled using the new IP Office mobility license, gives the ability to use a mobile as an extension of your office phone. This allows users to offer a one number approach while also controlling their accessibility, letting users be more mobile whether in or out of the office. Mobile twinning can be used for mobiles or any other external number (eg: home phone/home-workers), and requires no additional IP Office Hardware. In practical terms, the 'one number' approach adopted and promoted within Avaya IP Office means that companies don't become dependant on the mobile numbers of their employees. For example, if a salesman leaves his/her position, the company will not lose business contacts because the call still goes to the company phone number rather than the employee's mobile number.

Twinning allows a primary extension and a secondary number (extension or external) to operate together as a single telephone, typically used in scenarios like workshops or warehouses where team supervisors may have a desk with a fixed phone but also have a Mobile/Cell phone. When a call is presented to the primary phone the secondary will ring. If the primary telephone does not ring, for example in Do Not Disturb, the secondary phone will not ring. When a call is made from either twinned phone, the call will appear to have come from the primary phone (when the secondary is an extension on the IP Office system). Other users of the system need not know that the supervisor has two different phones. The supervisor’s Coverage Timer and No Answer Time are started for the call and if the call is not answered within that time, the call will be delivered to available coverage buttons (if applicable) and then Voicemail (if applicable). Users may be allowed to enter a twinned number, or may just be able to activate/deactivate the twinning function depending on administrative settings.

Avaya IP Office Phone System Features List