M7 MRAT

Question 1

How do normalization rules, PSTN usages, and routes work together to determine whether a user can make a call and where that call will be sent?

Answer 1

Normalization rules translate the dial string into a normalized number, which is matched against all routes linked to the user by usages. In the case of multiple matches, order determines the winner - the topmost match is selected.

Question 2

What clients are capable of parking calls? What clients are capable of retrieving parked calls?

Answer 2

Lync 2010, Lync Attendant 2010, and Lync Phone Edition 2010 are capable of parking calls. All of the above plus their Microsoft Office Communications Server 2007 R2 equivalents and common area phones are capable of retrieving parked calls.

Question 3

To what destinations can the announcement service transfer a call?

Answer 3

Phone number, SIP URI, or voice mail.

Question 4

An undesirable route is selected when some users dial a given phone number.

Answer 4

Use the Lync Server Control Panel to set up a test case to see which usage and route are selected. The order of usages and routes might need to be adjusted, or a usage might need to be associated with a user or route.

Question 5

Users need to be able to answer their calls on their mobile phone or Lync 2010 client.

Answer 5

Enable simultaneous ringing on the user’s policy and configure simultaneous ring for the user to also call the mobile phone.

Question 6

Call Park has been configured with a valid orbit containing 100 numbers, but users are unable to park calls.

Answer 6

Ensure that the normalization rules do not contain a match for the orbit—in the case of a match for both Call Park orbit and normalization rule, the normalization rule wins.

Question 7

When a call is received from the PSTN, a fast busy signal is played back to the caller.

Answer 7

Ensure that the announcement service is properly configured and that the number in question is in the unassigned number table.

Question 8

Contoso is a sales organization that has high turnover. Calls to salespeople who have left the company should be routed to a dedicated Response Group. All other calls should be routed to the Microsoft Exchange Auto Attendant. How can Contoso configure Lync Server 2010 in this manner?

Answer 8

Use the Announcement Service to configure numbers for salespeople who have left the company at the top of the unassigned number table; these numbers should route to the SIP address for the Response Group Service (RGS) contact. All other numbers should be at the bottom of the unassigned number table and should be pointed to the SIP address for the AA contact.

Question 9

Fabrikam utilizes the Call Park service heavily, but is sometimes unable to answer parked calls promptly. Given an expected average wait time of 5 minutes, what should you do to ensure that parked calls that cannot be picked up within that time period are able to leave a message? How would you make those changes?

Answer 9

Set an OnTimeoutURI on the Call Park configuration using the NewCsCpsConfiguration cmdlet

Question 10

Wingtip Toys has offices in the United States, France, and China. A route capable of calling nationally exists in each location. Callers in France should be able to call any number in any of the three nations. Callers in the United States and China should only be able to call their respective countries. How many phone usages are necessary to achieve this goal, and what are they?

Answer 10

Three: Call USA, Call France, and Call China.

Question 11

Best Practices

Supplement or modify the following best practices for your own work situations:

Answer 11

1. Model usages according to permissions—for instance, if some callers are only allowed to call local numbers, you need a “Local” usage.
2. Leverage the Announcement Service to route calls to unassigned numbers to a valid destination.
3. Configure Call Park with an OnTimeoutUri to provide a better experience for parked calls.