What do users need to ensure is present for SIP endpoints to communicate effectively with Session Manager?

For Session Initiation Protocol (SIP) endpoints to communicate effectively with Session Manager, having a valid SIP profile is critical. A SIP profile defines the necessary parameters and settings for SIP endpoints to establish communication properly within the Avaya architecture. This profile includes settings such as authentication, codecs, feature settings, and other specific configurations that dictate how calls are initiated, managed, and terminated.

A valid SIP profile ensures that the endpoints can register with the Session Manager and allows them to participate in call sessions. Without a properly configured SIP profile, SIP endpoints may face issues such as inability to register, incomplete call features, or failure to establish a connection altogether, leading to disrupted service.

While DNS services, Active Directory support, and a working IT network are important for overall system functionality and interoperability, they do not directly relate to the specific operational requirements of SIP endpoints in terms of their registration and communication with Session Manager. Thus, having a valid SIP profile is fundamental for ensuring effective communication between SIP endpoints and Session Manager.