Roughly r4224 in private:

More reliable detection of busy condition on MTC.
Also adds new GSM state, "Busy Reject".

git-svn-id: http://wush.net/svn/range/software/public/openbts/trunk@4920 19bc5d8c-e614-43d4-8b26-e1612bc8e597

Control/TransactionTable.cpp

@@ -1109,6 +1109,9 @@ bool TransactionTable::isBusy(const L3MobileIdentity& mobileID)
 			itr->second->GSMState() == GSM::CallReceived ||
 			itr->second->GSMState() == GSM::CallPresent ||
 			itr->second->GSMState() == GSM::ConnectIndication ||
+			itr->second->GSMState() == GSM::HandoverInbound ||
+			itr->second->GSMState() == GSM::HandoverProgress ||
+			itr->second->GSMState() == GSM::HandoverOutbound ||
 			itr->second->GSMState() == GSM::Active;
 		if (inCall) return true;
 	}

GSM/GSMCommon.cpp

@@ -47,6 +47,7 @@ const char* GSM::CallStateString(GSM::CallState state)
 		case ReleaseRequest: return "release-request";
 		case SMSDelivering: return "SMS-delivery";
 		case SMSSubmitting: return "SMS-submission";
+		case BusyReject: return "Busy Reject";
 		default: return NULL;
 	}
 }

GSM/GSMCommon.h

@@ -68,6 +68,10 @@ enum CallState {
 	ReleaseRequest,
 	SMSDelivering,
 	SMSSubmitting,
+	HandoverInbound,
+	HandoverProgress,
+	HandoverOutbound,
+	BusyReject,
 };
 
 
@@ -78,6 +82,7 @@ std::ostream& operator<<(std::ostream& os, CallState state);
 
 
 /** A base class for GSM exceptions. */
+
 class GSMError {};
 
 /** Duration ofa GSM frame, in microseconds. */