export type SIPConfig = { displayName: string; uri: string; password: string; wsServer: string; stunServers: string; }; export type ConnectionStatus = 'disconnected' | 'connecting' | 'connected' | 'registered' | 'error'; export type CallState = 'idle' | 'ringing-in' | 'ringing-out' | 'active' | 'ended' | 'failed';