Application Gateway Administration GuideChapter 1 Application Gateway OverviewImplementation Workflow5SSL support allows you to deploy the Application Gateway behind afirewall to provide a secure gateway to protect IP telephoneconnections beyond the firewall.• Supports digital certificates in Privacy Enhanced Mail (PEM) formatthat include a private key.• Requires few open ports. The complete list of required ports is in thePre-Installation Checklist.Implementation WorkflowThe following general steps provide a suggested workflow forimplementing Voice Office applications.1. Determine which applications are to be deployed and to whichphones.2. Customize the Voice Office Menu accordingly, as described in“Customizing the Voice Office Menu,” page 42.3. Specify the language in which the application interface should displayon the phones, as described in “Setting the Language of the VoiceOffice User Interface,” page 43.4. For the purposes of initial testing, point a few phones to theApplication Gateway, as described in “Enabling Communicationbetween the Phones and Application Gateway,” page 44.5. Enable automatic dialing, as described in “Enabling AutomaticDialing,” page 46.6. Complete the configuration required to supply the ApplicationGateway with a mapping of phone IP addresses to extensions (DNs),as described in “Specifying a Source for Phone IP-to-DN Mappings,”page 46.7. Configure the applications that you want to deploy. If you aredeploying Express Directory, Visual Voicemail, Zone Paging, orBroadcast Server, complete the directory configuration as described in“LDAP/CSV Directory Configuration,” page 51.8. Verify your implementation on the test phones.9. Deploy the applications to users by pointing their phones to theApplication Gateway.