diff --git a/dmrlink.py b/dmrlink.py
index 43d4b35..14286ab 100755
--- a/dmrlink.py
+++ b/dmrlink.py
@@ -1005,8 +1005,8 @@ class IPSC(DatagramProtocol):
                 return
             
             # ORIGINATED BY PEERS, NOT IPSC MAINTENANCE: Call monitoring is all we've found here so far 
-            elif _packettype == CALL_MON_ORIGIN:
-                self.call_mon_origin(self._network, data)
+            elif _packettype == CALL_MON_STATUS:
+                self.call_mon_status(self._network, data)
                 return
                 
             elif _packettype == CALL_MON_RPT:
diff --git a/ipsc/ipsc_message_types.py b/ipsc/ipsc_message_types.py
index ae62556..4048872 100644
--- a/ipsc/ipsc_message_types.py
+++ b/ipsc/ipsc_message_types.py
@@ -8,7 +8,7 @@
 
 # Known IPSC Message Types
 CALL_CONFIRMATION     = '\x05' # Confirmation FROM the recipient of a confirmed call.
-CALL_MON_ORIGIN       = '\x61' #  |
+CALL_MON_STATUS       = '\x61' #  |
 CALL_MON_RPT          = '\x62' #  | Exact meaning unknown
 CALL_MON_NACK         = '\x63' #  |
 XCMP_XNL              = '\x70' # XCMP/XNL control message