; RTP media port range for the lab. ; ; 50 ports ≈ 25 concurrent calls — comfortably above Hold Slayer's ; max_concurrent_calls (default 4). The range must match the ports published ; in docker-compose, or media arrives at a port Docker isn't forwarding and ; the call connects with no audio. [general] rtpstart = {{ asterisk_rtp_start }} rtpend = {{ asterisk_rtp_end }}