On the Deploy Communicator Web Access page, at Step 3: Create Virtual Server, click Run.

In the Create Virtual Server Wizard, on the Welcomepage, click Next.

On the Select Virtual Server Typepage, click Internalor Externaland then click Next.

On the Select Authentication Type page, do one of the following:

• If you want the virtual server to support the authentication methods built into the operating system, click Use built-in authenticationand then click Next.
  
  
• If you want the virtual server to support authentication mechanisms not built into the operating system, click Use custom authentication. If you select this option, you can also enter a URL in the Sign-Out URL (Optional)box. This represents the URL of the Web page that users will see after they sign out of Communicator Web Access. Click Next.
  
  

Do one of the following:

• If you chose built-in authentication and you are creating an internal virtual server, select Forms-based authenticationand/or Integrated (NTLM/Kerberos) password authenticationfrom the Select Authentication Typepage. Click Next.
  
  
• If you are creating an external virtual server, you will see the Select Authentication Typepage. However, you will not be able to select an authentication mechanism. Instead, Forms-based authenticationwill automatically be selected for you. Click Next.
  
  
• If you chose custom authentication you will not see the Select Authentication Typepage. That is because neither forms-based authentication nor integrated password authentication can be used with custom authentication. Instead, you will go directly to the Select Connection Typepage.
  
  

On the Select Connection Typepage do one of the following:

• Select HTTP (May be used with SSL accelerator)and then click Next.
  
  
• Select HTTPS (Recommended)and then click the Select Certificatebutton. In the Select Certificatedialog box, select the certificate to be used with this virtual server. Click the appropriate certificate and then click OK. On the Select Connection Typepage, click Next.
  
  

On the Select IP Address and Port Settingspage, select the IP address to be assigned to the virtual server. In the Portbox, type the port to be used by the virtual server. Click Next.

On the Server Descriptionpage, type a name for the virtual server in the Descriptionbox; this is the way the virtual server will be identified both in the Communicator Web Access snap-in and in the Internet Information Services (IIS) snap-in. Click Next.

On the Select a listening portpage, type the port number that the Communicator Web Access server uses to listen for Session Initiation Protocol (SIP) messages in the Listening portbox and then click Next. Do not select a port that is already in use by another application (for example, port 135, which is used by Remote Desktop, or port 445, which is used by file and printer sharing. If you select a port that is already in use setup will continue, but, upon completion, you will not be able to start your virtual server.

On the Select a poolpage select the fully qualified domain name of the Office Communications 2007 R2 server or server pool that will act as a “next hop” server for anonymous users. Select the next hop server from the Next hop pooldropdown list, type the SIP listening port (typically port 5061) in the Portbox, and then click Next.

On the Start Server Optionpage, select Start this virtual server after the Create Virtual Server Wizard finishesand then click Next; this ensures that the virtual server will start immediately after it is created.

On the Review Settings Before Virtual Server Creationpage, verify that the virtual server has been configured correctly and then click Next.

On the Create Virtual Server Completepage, click Closeto close the Create Virtual Server Wizard.