OM2000 message sequence charts: specify MO in node name
diff --git a/doc/manuals/om2000/om2k-mo-tx.msc b/doc/manuals/om2000/om2k-mo-tx.msc
index f822951..88a12a4 100644
--- a/doc/manuals/om2000/om2k-mo-tx.msc
+++ b/doc/manuals/om2000/om2k-mo-tx.msc
@@ -1,5 +1,5 @@
 msc {
-	bts [label="BTS"], bsc [label="BSC"];
+	bts [label="TRX (TX)"], bsc [label="BSC"];
 	# this is for the TRX Transmitter Object
 	---		[label="Initial state after initializing TRXC"];