Câu 37: 70-333: Deploying Enterprise Voice with Skype for Business 2015

You have a Skype for Business Server 2015 infrastructure. The infrastructure contains one central site. The infrastructure contains a Standard Edition server that has the Mediation Server role installed and is located in the central site. You configure a trunk to an IP-PBX which is qualified for integration with Skype for Business. You have 300 users who are enabled for Enterprise Voice. You need to provide public switched telephone network (PSTN) services to the Enterprise Voice users if the IP-PBX fails. What should you do?

1. A. Install a Survivable Branch server that connects directly to the PSTN. Configure a new trunk and add the trunk to the existing route. Add the route to the PSTN usage and add the PSTN usage to the voice policy.
2. B. Install a PSTN gateway that connects directly to the PSTN. Configure a new trunk to the new PSTN gateway. Create a new route and a new PSTN usage. Add the route to the PSTN usage and add the PSTN usage to the voice policy. — đáp án hiện tại
3. C. Install an additional IP-PBX that connects directly to the PSTN. Configure the existing trunk to use both IP-PBXs in resiliency mode.
4. D. Install a new trunk to a certified SIP trunk provider. Add the trunk to the existing PSTN usage. Add the PSTN usage to the voice policy.