Make and manage real phone calls through Twilio. Handles outbound calls with a stated objective, monitors call progress, and returns transcripts and summaries. Use when the user wants to call someone, check on a call, or review call history.

通过 Twilio 进行真实电话呼叫并管理通话。支持以指定目标发起外拨通话，监控通话进程，并返回通话记录和摘要。适用于用户需要拨打电话、查询通话状态或查看通话历史的场景。