[Unit] Description=CallPipe relay (Bluetooth HFP SCO <-> phone audio TCP bridge) After=bluetooth.service bluealsa.service network-online.target Wants=network-online.target [Service] Type=simple # Point at the phone (the hub). Override with: systemctl edit callpipe-relay Environment=CALLPIPE_PHONE=10.0.1.239 Environment=CALLPIPE_PORT=9010 ExecStart=/usr/bin/python /opt/callpipe/callpipe-relay.py Restart=always RestartSec=2 [Install] WantedBy=multi-user.target