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Question 6: You need to configure the unassigned numbers range to support the planned changes.Which four actions should you perform?
To answer, move the four appropriate actions from the list of actions to the answer area and arrange
them in the correct order.
Correct Answer:
Explanation
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Topic1, Litware, inc
General Overview:
Litware, Inc. is a marketing company that has 20,000 users.
Physical Locations:
Litware has a main office and a branch office. The main office is located in New York. The branch
office is located in Montreal.
The offices connect to each other by using a WAN link. Each office connects directly to the Internet.
Each office has a firewall between the internal network and the perimeter network. Each office has a
firewall between the perimeter network and the Internet.
Existing Environment
Active Directory Infrastructure
The network contains an Active Directory Domain Services (AD DS) forest named litware.com. The
forest contains a single domain. All domain controllers run Windows Server 2012.
Each office contains two domain controllers. Each office is configured as an Active Directory site.
Skype for Business Server Infrastructure
The network contains a Skype for Business Server 2015 infrastructure. The infrastructure contains 12
servers.
The servers are configured as shown in the following table.
Litware uses the following Skype for Business features:
Instant messaging (IM)
A/V conferencing
The Skype for Business Server 2015 infrastructure is configured to use federation with users at a
partner company, which is named Contoso, Ltd. Contoso has a SIP domain named contoso.com. The
users at Contoso use Microsoft Skype for Business Online.
Litware has a Microsoft Exchange Server 2013 organization. You integrate Exchange 2013 with Skype
for Business Server 2015.
Planned Changes
Litware plans to implement the following changes:
Enable Enterprise Voice for all users.
Add IP phones to the existing VLANs.
Add a SIP trunk to each site.
Problem Statements
Litware identifies the following issues:
The current firewall configurations allow all ports and all protocols to the Skype for Business Server
2015 infrastructure.
A change to the Skype for Business hosted provider proxy FQDN recently caused the federation with
contoso.com to become unavailable.
Requirements
Business Goals
Litware plans to minimize hardware and software purchasing costs.
Technical Requirements
Litware identities the following technical requirements:
The Enterprise Voice solution must ensure that calls to Canada are routed through the SIP trunk in
the Montreal office. Litware identifies 39 area codes and a country code of 1 for Canada. You must
minimize the number of voice routes that you must create.
The Enterprise Voice solution must ensure that calls to any country besides Canada are routed
through the SIP trunk in the New York office. Litware identifies 269 area codes and a country code of
1 for the United States.
If the SIP trunk in the New York office fails, users in the Montreal office must be able to place
international calls.
The provider of the New York SIP trunk requires that the 011 prefix be used to make all international
calls.
Rules exist to ensure that dialed numbers conform to E.164 standards.
Application sharing for up to 200 simultaneous remote users and 100 simultaneous internal users in a
single conference must be supported. Each application sharing session uses 500 Kbps. Only users on
the internal network are presenters of the conferences. You must minimize the amount of bandwidth
needed to application sharing.
Users in the New York and Montreal offices must be able to dial a local number to access their voice
mail remotely. Subscriber access must be available in French for the Montreal office users and in
English and Spanish for the New York office users.
Skype for Business Phone Edition devices must be supported.
Users must be able to access their voice mail only from the Skype for Business client by clicking Call
Voice Mail.
You must minimize the number of access numbers and UM dial plans that you create.
Security Requirements
Allow only the required communications through the firewalls for the supported Skype for Business
services.
Response Group Requirements
Litware plans to create a response group for support calls to meet the following requirements:
Incoming calls must be routed to any support staff who are online and available.
If the support call is not answered by a support staff member, the call must be forwarded to the
group of managers on call that day.
Calls forwarded to the managers must be sent to the manager who has not answered a support call
in the longest amount of time.
