Explanation/Reference:
Explanation:
You can configure the TCP port that's used to listen for Session Initiation Protocol (SIP) requests on a Unified Messaging (UM) IP gateway. By default, when you create a UM IP gateway, the TCP SIP listening port number is set to 5060.
The Microsoft Exchange Unified Messaging service and the UM worker process use multiple Transmission Control Protocol (TCP) and User Datagram Protocol (UDP) service ports to communicate with IP gateways.
The Microsoft Exchange Unified Messaging service and the UM worker process use Session Initiation Protocol (SIP) over TCP.
By default, the Microsoft Exchange Unified Messaging service listens on both TCP port 5060 in Unsecured mode and TCP port 5061 when mutual Transport Layer Security (mutual TLS) is used.
Each UM worker process that's created listens on port 5065 and 5067 (unsecured) and 5066 and 5068 (secured).
But when an IP gateway or IP PBX sends Realtime Transport Protocol (RTP) traffic to the Speech Engine service worker process, the IP gateway or IP PBX will use a valid UDP port that ranges from 1024 through
65535.
Reference:
http://technet.microsoft.com/en-us/library/jj150516(v=exchg.150).aspx#ports

Testlet 1
Overview
General Overview
A Datum Corporation is a pet supply company that has stores across North America.
A Datum has an Exchange Server 2007 organization. A Datum plans to migrate to Exchange Server
2013.
Physical Locations
A Datum has five locations. The locations are configured as shown in the following table.

Existing Environment
Network Infrastructure
All of the locations connect to the each other by using a WAN link. The New York, Toronto, and Chicago locations connect directly to the Internet.
All client computers run Windows 7 and Office 2010. All servers run Windows Server 2008.
Active Directory Environment
The network contains an Active Directory domain named adatum.local. Adatum.local is the corporate domain based in the United States. The network contains a domain named Canada.adatum.local.
Canada.adatum.local is the domain for the stores in Canada.
Each location is configured as an Active Directory site.
The forest functional level is Windows Server 2008.
The main office and both of the distribution centers each has two domain controllers for their respective domain. All of the other locations have one domain controller for their respective domain. All of the domain controllers are global catalog servers.
Exchange Infrastructure
The main office and the distribution centers each have three servers that have Exchange Server 2007 installed.
The servers have the following configurations:
Two of the servers have cluster continuous replication (CCR) deployed

One of the servers has the Client Access server role and the Hub Transport server role installed

Each store contains a server that has Exchange Server 2007 installed. Each server has mailboxes for active users and mailboxes for inactive users. Each server has approximately 50 mailboxes.
Remote users access Outlook Web Access by using a namespace of mail.adatum.com, which resolves to the Client Access server in the New York office.
Requirements
Planned Changes
The company plans to implement the following changes:
Migrate all of the mailboxes in the main office and the distribution centers to Exchange Server 2013.

Integrate a new telephone system to the Exchange Server 2013 organization.

Deploy a standalone certification authority (CA) that will be used to issue all of the certificates for the

messaging
infrastructure.
Technical Requirements
The company identifies the following technical requirements:
Hardware costs must be minimized whenever possible.

The impact on end users if a site fails must be minimized.

Voice mail traffic between the telephone system and the Exchange Server environment must be

encrypted.
Each user must be able to access the internal resources and their mailbox by using a single user

account.
Compliance Requirements
After a security review, the company identifies the following compliance requirements for the new Exchange Server environment:
All administrative changes made to the mailboxes must be tracked.

The legal department must be able to search for messages in all of the mailboxes.

Users must be prevented from sending email during an upcoming statutory holiday.

All store managers must be prevented from permanently deleting email messages from their Inbox.

All email messages must be archived for a minimum of five years to meet regulatory requirements.

Management occasionally sends the staff internal memos that contain confidential information, such as

sales figures. The memos must be protected so that unauthorized users cannot read the memos and internal users cannot forward the memos to external recipients.
The users in the research department must be able to send email to anyone in the organization, but

only the members of a group named Execs must be able to send email to the research users. All other users must be notified that email sent to the research users will remain undelivered.