Sane message when terminating call with unknown number and more verbose output to stderr from modem scripts

scripts/modem/sxmo_modemdial.sh

@@ -4,6 +4,7 @@ trap "gracefulexit" INT TERM
 fatalerr() {
 	# E.g. hangup all calls, switch back to default audio, notify user, and die
 	mmcli -m "$(mmcli -L | grep -oE 'Modem\/([0-9]+)' | cut -d'/' -f2)" --voice-hangup-all
+	echo "$1" >&2
 	notify-send "$1"
 	(sleep 0.5; sxmo_statusbarupdate.sh) &
 	kill -9 0