When AE Services returns to an operational state after an outage, you
will be able to use Lync to place and control new calls. If you experience
an outage, follow the following steps.
Procedure
If you are on a call and AE Services outage occurs, complete the call and manually hang up
the phone so that your phone and Lync are synchronized.
When you are ready to start a new call in Lync, your phone
and Lync will be synchronized.
If Lync signs you out as a result of a network outage,
you must sign into Lync again before you can control new calls.
If you attempt to sign in during an AE Services outage, Lync displays the warning icon along with the
pop-up indicating that Lync cannot make phone calls.