1. Click Start, click All Programs, click Microsoft Communications Server 2010, and then click Communications Server Topology Builder.

2. In the console tree, expand the central site, right-click Branch Office Sites, and then click New Branch Site.

3. In the Define Branch Site dialog box, click Name, and then type the name of the branch site.

4. (Optional) Click Description, and then type a meaningful description for the branch site.

5. Click Next.

6. (Optional) In the next Define Branch Site dialog box, do any of the following:

   • Click City, and then type the name of the city in which the branch site is located.
     
     
   • Click State/Region, and then type the name of the state or region in which the branch site is located.
     
     
   • Click Country Code, and then type the two-digit calling code for the country/region in which the branch site is located.
     
     

7. Click Next, and then do one of the following:

   • If you are using a Survivable Branch Appliance or Server at this site, make sure the Open the New Survivable Wizard when this wizard closes check box is selected, click Finish, and then follow the directions in the wizard that opens. For information about wizard items, see Define a Survivable Branch Appliance or Server.
     
     
   • If you are not using a Survivable Branch Appliance or Server at this site, clear the Open the New Survivable Wizard when this wizard closes check box, and then click Finish.
     
     

8. Repeat the previous steps for each branch site you want to add to the topology.

Next step:

For Survivable Branch Appliances or Servers: Define a Survivable Branch Appliance or Server;

For non-resilient PSTN connectivity: Define an IP/PSTN Gateway for a Branch Site, Configure Media Bypass on a Trunk, or Configure a Trunk Without Media Bypass