add missing sccp.hrl header file
diff --git a/src/sccp.hrl b/src/sccp.hrl
new file mode 100644
index 0000000..26d5caa
--- /dev/null
+++ b/src/sccp.hrl
@@ -0,0 +1,60 @@
+
+% Table 1 / Q.713 - SCCP Message Types
+-define(SCCP_MSGT_CR, 1). % Connection request
+-define(SCCP_MSGT_CC, 2). % Connection confirm
+-define(SCCP_MSGT_CREF, 3). % Connection refused
+-define(SCCP_MSGT_RLSD, 4). % Released
+-define(SCCP_MSGT_RLC, 5). % Release complete
+-define(SCCP_MSGT_DT1, 6). % Data form 1
+-define(SCCP_MSGT_DT2, 7). % Data form 2
+-define(SCCP_MSGT_AK, 8). % Data acknowledgement
+-define(SCCP_MSGT_UDT, 9). % Unitdata
+-define(SCCP_MSGT_UDTS, 10). % Unitdata service
+-define(SCCP_MSGT_ED, 11). % Expedited data
+-define(SCCP_MSGT_EA, 12). % Expedited data ack
+-define(SCCP_MSGT_RSR, 13). % Reset Request
+-define(SCCP_MSGT_RSC, 14). % Reset Confirmation
+-define(SCCP_MSGT_ERR, 15). % Protocol data unit error
+-define(SCCP_MSGT_IT, 16). % Inactivity test
+-define(SCCP_MSGT_XUDT, 17). % Extended unitdata
+-define(SCCP_MSGT_XUDTS, 18). % Extended unitdata service
+-define(SCCP_MSGT_LUDT, 19). % Long unitdata
+-define(SCCP_MSGT_LUDTS, 20). % Long unitdata service
+
+% Table 2 / Q.713 - SCCP parameter name codes
+-define(SCCP_PNC_END_OF_OPTIONAL, 0).
+-define(SCCP_PNC_DESTINATION_LOCAL_REFERENCE, 1).
+-define(SCCP_PNC_SOURCE_LOCAL_REFERENCE, 2).
+-define(SCCP_PNC_CALLED_PARTY_ADDRESS, 3).
+-define(SCCP_PNC_CALLING_PARTY_ADDRESS, 4).
+-define(SCCP_PNC_PROTOCOL_CLASS, 5).
+-define(SCCP_PNC_SEGMENTING, 6).
+-define(SCCP_PNC_RECEIVE_SEQ_NUMBER, 7).
+-define(SCCP_PNC_SEQUENCING, 8).
+-define(SCCP_PNC_CREDIT, 9).
+-define(SCCP_PNC_RELEASE_CAUSE, 10).
+-define(SCCP_PNC_RETURN_CAUSE, 11).
+-define(SCCP_PNC_RESET_CAUSE, 12).
+-define(SCCP_PNC_ERROR_CAUSE, 13).
+-define(SCCP_PNC_REFUSAL_CAUSE, 14).
+-define(SCCP_PNC_DATA, 15).
+-define(SCCP_PNC_SEGMENTATION, 16).
+-define(SCCP_PNC_HOP_COUNTER, 17).
+-define(SCCP_PNC_IMPORTANCE, 18).
+-define(SCCP_PNC_LONG_DATA, 19).
+
+
+% a single parsed SCCP message
+-record(sccp_msg, {
+ msg_type,
+ parameters
+ }).
+
+
+% a primitive how it is used inside the SCCP stack and to the user
+-record(primitive, {
+ subsystem,
+ gen_name,
+ spec_name,
+ parameters
+ }).