diff --git a/resources/prosody-plugins/ext_events.lib.lua b/resources/prosody-plugins/ext_events.lib.lua
index bdb6e3f41..1b48e2aa8 100644
--- a/resources/prosody-plugins/ext_events.lib.lua
+++ b/resources/prosody-plugins/ext_events.lib.lua
@@ -9,9 +9,21 @@ local function invite(stanza, url)
    module:log("warn", "Implement this lib to trigger external events.")
 end
 
+-- cancel will perform the trigger for external call cancellation.
+-- This trigger is left unimplemented. The implementation is expected
+-- to be specific to the deployment.
+local function cancel(stanza, url, reason)
+   module:log(
+	  "warn",
+	  "A module has been configured that triggers external events."
+   )
+   module:log("warn", "Implement this lib to trigger external events.")
+end
+
 
 local ext_events = {
-   invite = invite
+   invite = invite,
+   cancel = cancel
 }
 
 return ext_events
diff --git a/resources/prosody-plugins/mod_muc_call.lua b/resources/prosody-plugins/mod_muc_call.lua
index df725490f..280d71df1 100644
--- a/resources/prosody-plugins/mod_muc_call.lua
+++ b/resources/prosody-plugins/mod_muc_call.lua
@@ -16,7 +16,14 @@ if not muc_domain_base then
 end
 
 -- Status strings that trigger call events.
-local invited_status = "Invited"
+local invited_status  = "Invited"
+local calling_status  = "Calling"
+local ringing_status  = "Ringing"
+local busy_status     = "Busy"
+local rejected_status = "Rejected"
+local connected_status = "connected"
+
+
 
 -- url_from_room_jid will determine the url for a conference
 -- provided a room jid. It is required that muc domain mapping
@@ -44,9 +51,14 @@ end
 -- event should be triggered. Call events are triggered by status strings
 -- the status strings supported are:
 --    -------------------------
---    Status     | Event Type
+--    Status      | Event Type
 --    _________________________
---    "Invited"  | Invite
+--    "Calling"   | INVITE
+--    "Invited"   | INVITE
+--    "Ringing"   | CANCEL
+--    "Busy"      | CANCEL
+--    "Rejected"  | CANCEL
+--    "connected" | CANCEL
 module:hook("muc-broadcast-presence", function (event)
     -- Detect if the presence is for a poltergeist or not.
     if not
@@ -57,8 +69,28 @@ module:hook("muc-broadcast-presence", function (event)
 	   return
     end
 
-    if event.stanza:get_child_text("status") == invited_status then
+	local invite = function()
+		 local url = assert(url_from_room_jid(event.stanza.attr.from))
+		 ext_events.invite(event.stanza, url)
+	end
+
+	local cancel = function()
 	   local url = assert(url_from_room_jid(event.stanza.attr.from))
-	   ext_events.invite(event.stanza, url)
-    end
+	   local status = event.stanza:get_child_text("status")
+	   ext_events.cancel(event.stanza, url, string.lower(status))
+	end
+
+	local switch = function(status)
+	   case = {
+		  [invited_status]   = function() invite() end,
+		  [calling_status]   = function() invite() end,
+		  [ringing_status]   = function() cancel() end,
+		  [busy_status]      = function() cancel() end,
+		  [rejected_status]  = function() cancel() end,
+		  [connected_status] = function() cancel() end
+	   }
+	   if case[status] then case[status]() end
+	end
+
+	switch(event.stanza:get_child_text("status"))
 end, -101);