What is domains in sip?

Answer 1

In the context of Session Initiation Protocol (SIP), "domains" refer to the logical grouping of SIP resources, typically associated with a domain name or network. SIP domains help in identifying the entities involved in the signaling and media exchange for voice and video communications over the internet. They are used to route SIP messages to the appropriate server or endpoint, facilitating user registration and call setup within the specified domain. For example, a SIP domain could be something like "example.com," indicating where users or devices are registered and managed.