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diff --git a/1.4.23-rc4/include/asterisk/causes.h b/1.4.23-rc4/include/asterisk/causes.h
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+/*
+ * Asterisk -- An open source telephony toolkit.
+ *
+ * Copyright (C) 1999 - 2005, Digium, Inc.
+ *
+ * Martin Pycko <martinp@digium.com>
+ *
+ * See http://www.asterisk.org for more information about
+ * the Asterisk project. Please do not directly contact
+ * any of the maintainers of this project for assistance;
+ * the project provides a web site, mailing lists and IRC
+ * channels for your use.
+ *
+ * This program is free software, distributed under the terms of
+ * the GNU General Public License Version 2. See the LICENSE file
+ * at the top of the source tree.
+ */
+
+/*! \file
+ * \brief Internal Asterisk hangup causes
+ */
+
+#ifndef _ASTERISK_CAUSES_H
+#define _ASTERISK_CAUSES_H
+
+/* Causes for disconnection (from Q.931) */
+#define AST_CAUSE_UNALLOCATED 1
+#define AST_CAUSE_NO_ROUTE_TRANSIT_NET 2
+#define AST_CAUSE_NO_ROUTE_DESTINATION 3
+#define AST_CAUSE_CHANNEL_UNACCEPTABLE 6
+#define AST_CAUSE_CALL_AWARDED_DELIVERED 7
+#define AST_CAUSE_NORMAL_CLEARING 16
+#define AST_CAUSE_USER_BUSY 17
+#define AST_CAUSE_NO_USER_RESPONSE 18
+#define AST_CAUSE_NO_ANSWER 19
+#define AST_CAUSE_SUBSCRIBER_ABSENT 20
+#define AST_CAUSE_CALL_REJECTED 21
+#define AST_CAUSE_NUMBER_CHANGED 22
+#define AST_CAUSE_DESTINATION_OUT_OF_ORDER 27
+#define AST_CAUSE_INVALID_NUMBER_FORMAT 28
+#define AST_CAUSE_FACILITY_REJECTED 29
+#define AST_CAUSE_RESPONSE_TO_STATUS_ENQUIRY 30
+#define AST_CAUSE_NORMAL_UNSPECIFIED 31
+#define AST_CAUSE_NORMAL_CIRCUIT_CONGESTION 34
+#define AST_CAUSE_NETWORK_OUT_OF_ORDER 38
+#define AST_CAUSE_NORMAL_TEMPORARY_FAILURE 41
+#define AST_CAUSE_SWITCH_CONGESTION 42
+#define AST_CAUSE_ACCESS_INFO_DISCARDED 43
+#define AST_CAUSE_REQUESTED_CHAN_UNAVAIL 44
+#define AST_CAUSE_PRE_EMPTED 45
+#define AST_CAUSE_FACILITY_NOT_SUBSCRIBED 50
+#define AST_CAUSE_OUTGOING_CALL_BARRED 52
+#define AST_CAUSE_INCOMING_CALL_BARRED 54
+#define AST_CAUSE_BEARERCAPABILITY_NOTAUTH 57
+#define AST_CAUSE_BEARERCAPABILITY_NOTAVAIL 58
+#define AST_CAUSE_BEARERCAPABILITY_NOTIMPL 65
+#define AST_CAUSE_CHAN_NOT_IMPLEMENTED 66
+#define AST_CAUSE_FACILITY_NOT_IMPLEMENTED 69
+#define AST_CAUSE_INVALID_CALL_REFERENCE 81
+#define AST_CAUSE_INCOMPATIBLE_DESTINATION 88
+#define AST_CAUSE_INVALID_MSG_UNSPECIFIED 95
+#define AST_CAUSE_MANDATORY_IE_MISSING 96
+#define AST_CAUSE_MESSAGE_TYPE_NONEXIST 97
+#define AST_CAUSE_WRONG_MESSAGE 98
+#define AST_CAUSE_IE_NONEXIST 99
+#define AST_CAUSE_INVALID_IE_CONTENTS 100
+#define AST_CAUSE_WRONG_CALL_STATE 101
+#define AST_CAUSE_RECOVERY_ON_TIMER_EXPIRE 102
+#define AST_CAUSE_MANDATORY_IE_LENGTH_ERROR 103
+#define AST_CAUSE_PROTOCOL_ERROR 111
+#define AST_CAUSE_INTERWORKING 127
+
+/* Special Asterisk aliases */
+#define AST_CAUSE_BUSY AST_CAUSE_USER_BUSY
+#define AST_CAUSE_FAILURE AST_CAUSE_NETWORK_OUT_OF_ORDER
+#define AST_CAUSE_NORMAL AST_CAUSE_NORMAL_CLEARING
+#define AST_CAUSE_NOANSWER AST_CAUSE_NO_ANSWER
+#define AST_CAUSE_CONGESTION AST_CAUSE_NORMAL_CIRCUIT_CONGESTION
+#define AST_CAUSE_UNREGISTERED AST_CAUSE_SUBSCRIBER_ABSENT
+#define AST_CAUSE_NOTDEFINED 0
+#define AST_CAUSE_NOSUCHDRIVER AST_CAUSE_CHAN_NOT_IMPLEMENTED
+
+#endif /* _ASTERISK_CAUSES_H */