For an overview of deploying PSTN connectivity, see the following:

• SIP Trunk Deployment Checklist

• Direct SIP Deployment Options

• Planning Outbound Voice Routing

For an overview of deploying Exchange Unified Messaging (UM), see the following:

• Deployment Process for Integrating On-Premises Unified Messaging and Lync Server 2013

For an overview of deploying call admission control, see the following topics:

• Deployment Checklist for Call Admission Control

For an overview of the deployment process for Emergency Services, see the following:

• Defining Your Requirements for Emergency Calls

• Choosing an E9-1-1 Service Provider

• Deployment Checklist for E9-1-1

For an overview of deploying private telephone lines, see the “Private Telephone Lines in Mixed Deployments” section of Planning for Private Telephone Lines.

For an overview of the deployment of call handling features (call parking, announcement application, and response groups), see the following:

• Deployment Process for Call Park

• Deployment Process for Announcements