You can retrieve the call start time, end time, and call duration for a telephony call in LiveKit using the

SIPCallInfo

structure. This structure provides: • Start Time:

started_at_ns

(call start time in nanoseconds) • End Time:

ended_at_ns

(call end time in nanoseconds) • Call Duration: Calculate by subtracting start time from end time:

duration = ended_at_ns - started_at_ns

These fields are available in the Python, Rust, and Go SDKs. For example, in Python:

started_at_ns: int
ended_at_ns: int
created_at_ns: int

In Go, you can use getter methods like

GetStartedAtNs()

and

GetEndedAtNs()

. It's recommended to use the nanosecond fields for better precision. The exact way to access

SIPCallInfo

depends on your SDK and how you handle SIP call data in your application. Sources: livekit/livekit_analytics.pb.go | livekit-protocol/livekit/protocol/analytics.pyi | livekit-protocol/src/livekit.rs