The only call trigger today ("Call details") fires at the end of a call — terminal statuses only. There's no way for a workflow to react when a call starts.
Please add a trigger for call start / answered / in-progress, on both inbound and outbound LC Phone calls, that also exposes the agent on the call (for per-rep routing).
This unlocks real-time automations that are impossible now:
Live agent presence ("Available" vs "On a call")
Smarter routing — don't send calls/leads to a rep who's already live
Manager call wallboards
Pausing automation while an agent is on the phone
LC Phone already runs on Twilio, so these start events exist internally — they just aren't exposed to workflows. Surfacing them lets us build this natively instead of rebuilding it with a custom Twilio callback workaround.