General
● You must reduce international long distance calling costs, and lower support and administration costs for the IP-PBX and ACD solutions.
● You must implement voice survivability for all the sites in case of a wide area network (WAN) link failure.
● Where possible, you must optimize media paths.
● The solution must be resilient to the failure of mediation server pools.
● The maximum concurrent peer-to-peer connections between Moscow and Berlin will be 196.
● Response groups must be managed by dedicated response group administrators.

Gateways
● Existing gateways do not support the REFER method. You must use the existing gateways with Skype for Business to provide PSTN connectivity.
● In the event of a failure of both gateways at any office, all international calls from that office must route through the Moscow gateways.

Outbound calls
● All calls placed to Russia from any office must route through the Moscow gateways.
● Germany experiences high public switched telephone network (PSTN) call volume. All calls for Germany must breakout from Berlin in the event of Mediation Server pool failure in Berlin.
● All PSTN calls to Germany must use Berlin gateways in the event of Mediation Server pool failure in Berlin.

Users in Copenhagen report frequent audio call issues.

You need to resolve the issues.

Which three actions should you perform? Each correct answer presents part of the solution.

A. Create a new region link between the MPLS region and the Berlin region.
B. Create and configure a new network region and assign only Copenhagen to this region.

C. Create an inter-site policy which includes Copenhagen and Moscow and specify the existing BandwidthPolicyProfile “LOW”.

D. Create an inter-site policy which includes Copenhagen and Berlin and apply the existing BandwidthPolicyProfile “LOW”.

E. Create and configure a new network region and assign Berlin and Copenhagen to this region.