Communication Manager as the SIP Feature Server

SIP

The high level architecture is a shared data approach, where most components do not interact directly with each other, but rather all share and use data in the database. The master admin system populates that data from a single web interface, and run-time components read and modify that data. In some cases, there are specific interfaces between components: the event server is reached through the proxy using SIP, the event server and PPM use a SOAP service for profile notifications, and the trace logger communicates between the proxy's logging capabilities and MAWS.

The SES Network

As a proxy infrastructure, SES is at the heart of SIP communications, routing messages between other SIP networks, SIP feature servers, SIP adjuncts, and SIP endpoints in the SIP network. Two terms describe an SES server: Edge Server and Home Server. An "Edge Server" communicates with external SIP networks, and a "Home Server" provides service to endpoints. The most basic server is a single-box solution that provides both Edge and Home capabilities and is referred to as a Home-Edge server. The Home-Edge server contains all of the SES components, can be configured to route to external domains, and provides service to SIP endpoints.

SES Edge Server

The SES Edge Server provides routing to external domains as well as hosting the global routing table for the enterprise. While it does not have specific knowledge of SIP endpoint registrations, it knows where users are on the network. In fact, it knows where to route each SIP address in that domain.

The SES Master Admin system is resident on the edge server.

SES Core Router

The SES Core Router is an enhancement to the Edge Server to perform prefix-based routing between branches in the Distributed Office environment.

SES Home Server

The SES Home Server provides service to SIP endpoints. The Home Server routes the Advanced SIP Telephony (AST) capability with Communication Manager, provides a SIP registrar, and contains the Personal Profile Manager web service and end-user web interface for profile management.