1-1 Calls¶

Purpose¶

A 1-1 call is the simplest call experience: one caller, one callee, one encrypted media room. Internally it follows the same call setup rules as group calls, but the UI presents a focused two-person layout.

Business Flow¶

User taps audio/video call
        -> app prepares local outgoing state
        -> iOS registers the call with the system call UI
        -> app verifies the callee's device keys
        -> app creates a fresh session key
        -> app encrypts that key for the callee
        -> backend creates the call and notifies the callee
        -> both devices join the LiveKit room
        -> encrypted media starts

Key Rules¶

• 1-1 is the single-recipient case of the shared call pipeline.
• Identity verification happens before the session key is sent to the peer.
• The backend coordinates signaling and room access, but should not receive the raw session key.
• The UI uses the same participant state as larger calls; it only changes presentation when there are two people.

User Experience¶

Related¶

• Group Calls
• Call E2EE
• 1-1 Flow Diagram