asterisk: support packet loss concealment config

net/asterisk/files/iopsys/lib/voice/config_asterisk.sh

@@ -1297,6 +1297,7 @@ configure_tel_options() {
         local minimumnumberdigits
         local terminationdigit
         local max_sessions_per_line
+	local packet_loss_concealment
 
 	config_get jbenable tel_options jbenable
 	config_get jbforce tel_options jbforce
@@ -1313,6 +1314,7 @@ configure_tel_options() {
         config_get minimumnumberdigits numberingplan minimumnumberdigits
         config_get terminationdigit numberingplan terminationdigit
         config_get max_sessions_per_line tel_options maxsessionsperline
+	config_get packet_loss_concealment tel_options packet_loss_concealment
 
 	channel_fac="$channel_fac $fac"
 	# Convert whitespace to commas
@@ -1363,6 +1365,12 @@ configure_tel_options() {
 
 	[ -z "$tel_event_pt" ] && tel_event_pt=101
 	sed -i "s/|PT_DYNAMIC|/$tel_event_pt/"			$WORK_DIR/asterisk.conf
+
+	if [ -n "$packet_loss_concealment" -a "$packet_loss_concealment" = "0" ] ; then
+		sed -i "s/|PACKET_LOSS_CONCEALMENT|/no/"			$WORK_DIR/codecs.conf
+	else
+		sed -i "s/|PACKET_LOSS_CONCEALMENT|/yes/"			$WORK_DIR/codecs.conf
+	fi
 }
 
 # Configure settings for individual line in chan_telephony.conf
@@ -1655,7 +1663,7 @@ create_temp_files() {
 
 	file=$WORK_DIR/codecs.conf
 	echo "[plc]" > $file
-	echo "genericplc = yes ;Enables packet loss concealment [yes/no]" >> $file
+	echo "genericplc = |PACKET_LOSS_CONCEALMENT| ;Enables packet loss concealment [yes/no]" >> $file
 
 	file=$WORK_DIR/res_stun_monitor.conf
 	echo "[general]" > $file