What is the meaning of "SIP Fork" in telephony?

The term "SIP Fork" refers to a scenario in Session Initiation Protocol (SIP) where a single call attempt results in multiple simultaneous ringing endpoints. This allows for the same call to reach multiple destinations, which can be particularly useful in environments such as businesses where a call can be directed to several employees or departments at once. When the SIP message is sent out to multiple endpoints, they "fork" off from the original request, hence the name "fork." This feature enhances call reachability and can facilitate better communication among team members.

In this context, the other choices, while they relate to call handling, do not accurately capture the essence of what a SIP Fork represents. Options discussing call forwarding or methods to end calls pertain to different aspects of call management, while the choice about video calls does not fit the definition associated with forking in SIP.