diff --git a/openbsc/contrib/a-link/sccp-split-by-con.lua b/openbsc/contrib/a-link/sccp-split-by-con.lua
new file mode 100644
index 0000000..d6c4dc5
--- /dev/null
+++ b/openbsc/contrib/a-link/sccp-split-by-con.lua
@@ -0,0 +1,110 @@
+-- Split trace based on SCCP Source
+do
+        local function init_listener()
+                print("CREATED LISTENER")
+                local tap = Listener.new("ip", "sccp && (ip.src == 172.16.1.81 || ip.dst == 172.16.1.81)")
+		local sccp_type_field = Field.new("sccp.message_type")
+		local sccp_src_field = Field.new("sccp.slr")
+		local sccp_dst_field = Field.new("sccp.dlr")
+		local msg_type_field = Field.new("gsm_a.dtap_msg_mm_type")
+		local lu_rej_field = Field.new("gsm_a.dtap.rej_cause")
+		local ip_src_field = Field.new("ip.src")
+		local ip_dst_field = Field.new("ip.dst")
+
+		local connections = {}
+
+		function check_failure(con)
+			local msg_type =  msg_type_field()
+			if not msg_type then
+				return
+			end
+
+			msg_type = tonumber(tostring(msg_type))
+			if msg_type == 0x04 then
+				print("LU REJECT with " .. tostring(lu_rej_field()))
+				con[4] = true
+			end
+		end
+
+                function tap.packet(pinfo,tvb,ip)
+			local ip_src = tostring(ip_src_field())
+			local ip_dst = tostring(ip_dst_field())
+			local sccp_type = tonumber(tostring(sccp_type_field()))
+			local sccp_src = sccp_src_field()
+			local sccp_dst = sccp_dst_field()
+
+			local con
+
+			if sccp_type == 0x01 then
+			elseif sccp_type == 0x2 then
+				local src = string.format("%s-%s", ip_src, tostring(sccp_src))
+				local dst = string.format("%s-%s", ip_dst, tostring(sccp_dst))
+				local datestring = os.date("%Y%m%d%H%M%S")
+				local pcap_name = string.format("alink_trace_%s-%s_%s.pcap", src, dst, datestring)
+				local dumper = Dumper.new_for_current(pcap_name)
+
+				local con = { ip_src, tostring(sccp_src), tostring(sccp_dst), false, dumper, pcap_name }
+
+				dumper:dump_current()
+				connections[src] = con
+				connections[dst] = con
+			elseif sccp_type == 0x4 then
+				-- close a connection... remove it from the list
+				local src = string.format("%s-%s", ip_src, tostring(sccp_src))
+				local dst = string.format("%s-%s", ip_dst, tostring(sccp_dst))
+
+				local con = connections[src]
+				if not con then
+					return
+				end
+
+				con[5]:dump_current()
+				con[5]:flush()
+
+				-- this causes a crash on unpacted wireshark
+				con[5]:close()
+
+				-- the connection had a failure
+				if con[4] == true then
+					local datestring = os.date("%Y%m%d%H%M%S")
+					local new_name = string.format("alink_failure_%s_%s-%s.pcap", datestring, con[2], con[3])
+					os.rename(con[6], new_name)
+				else
+					os.remove(con[6])
+				end
+
+
+				-- clear the old connection
+				connections[src] = nil
+				connections[dst] = nil
+
+			elseif sccp_type == 0x5 then
+				-- not handled yet... we should verify stuff here...
+				local dst = string.format("%s-%s", ip_dst, tostring(sccp_dst))
+				local con = connections[dst]
+				if not con then
+					return
+				end
+				con[5]:dump_current()
+			elseif sccp_type == 0x6 then
+				local dst = string.format("%s-%s", ip_dst, tostring(sccp_dst))
+				local con = connections[dst]
+				if not con then
+					print("DON'T KNOW THIS CONNECTION for " .. ip_dst)
+					return
+				end
+				con[5]:dump_current()
+				check_failure(con)
+			end
+
+                end
+                function tap.draw()
+                        print("DRAW")
+                end
+                function tap.reset()
+                        print("RESET")
+                end
+        end
+
+        init_listener()
+end