A company has a main office and five branch offices located in different cities. You configure Skype for Business Enterprise Voice for the main office.
You deploy a Survivable Branch Appliance (SBA) at a branch office and connect it to a public switched telephone network (PSTN) by using a T1 trunk line. You configure the SBA voice gateway to use fully qualified domain names (FQDN).
You test the branch isolation by disconnecting the wide area network (WAN) form the branch office and make an outbound call. The call was successful. Next, you make an inbound call to the branch office and the call fails.
You perform the following troubleshooting steps:
* Trace the IncomingAndOutgoingCalls setting.
* Use Snooper to analyze logs.
* Review the syslog file form the SBA voice gateway.
You discover that messages are sent to the Skype for Business Mediation Server pool, but not received.
You reconnect the WAN from the branch office and make an inbound call. The call is successful.
You need to identify the configuration error that causes inbound calls to fail.
What should you check?

• A. the status of the DNS services for the branch office domain controller
• B. the Dynamic Host Configuration Protocol (DHCP) options for the branch DHCP server
• C. the DNS settings for the SBA voice gateway
• D. the route settings for the SBA voice gateway

You are performing a network readiness assessment for Skype for Business deployment for a customer's organization.
The customer's organization includes five sites that are connected by site-to-site virtual private network (VPN) links. Each site includes from 20 to 100 client computers.
You need to collect network traffic metrics.
Which three network traffic metrics should you collect? Each correct answer presents part of the solution.

• A. one-way network delay
• B. minimum jitter
• C. TCP/IP port statistics
• D. average jitter
• E. peer-to-peer (P2P) available bandwidth
• F. average packet loss

Your company has a single office located in the United States.
The phone numbers in the United States have a country code of 1 followed by 10 digits.
You have a Skype for Business Server 2015 infrastructure configured for Enterprise Voice. All normalization rules ensure that dialed numbers conform to E.164 standards.
You need to create a called number translation rule that meets the following requirements:
* Eleven-digit numbers that start with 1 must have the 1 removed before they are routed to the public switched telephone network (PSTN).
* All other phone numbers must not be modified by the rule.
Which pattern match and translation rule should you use? To answer, select the appropriate pattern match and translation rule in the answer area.

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. The IP-PBX 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 IPPBX fails.
Which two actions will achieve the goal? Each answer: presents a complete solution.

• A. Install a Survivable Branch appliance that connects directly to the PSTN. Configure a new trunk and add thetrunk to the existing route. Add the route to the PSTN usage and add the PSTN usage to the voice policy.
• B. Install a new trunk to a certified SIP trunk provider. Add the trunk to the existing PSTN usage. Add thePSTN usage to the voice policy.
• C. Install a PSTN gateway that connects directly to the PSTN. Configure a new trunk to the new PSTNgateway. 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.
• D. Install an additional IP-PBX that connects directly to the PSTN. Configure the existing trunk to use both IP-PBXs in resiliency mode.

You have a Skype for Business Server 2015 infrastructure that has Enterprise Voice enabled.
When a caller dials an unassigned number, the caller hears a custom message, and then the caller is forwarded to a user named User1.
Several months later, User1 leaves the company.
You need to ensure that when a caller dials an unassigned number, the caller hears the custom message and is forwarded to a user named User2.
Which Skype for Business Management Shell cmdlet should you run?

• A. Set-CsAnnouncement
• B. Set-CsUser
• C. Set-CsVoiceRoute
• D. Set-CsUnassignedNumber