IEC 60870-5-104 dissector decodes nothing

This issue was migrated from bug 3650 in our old bug tracker.

Original bug information:

Reporter: Joan Ramio
Status: RESOLVED FIXED
Product: Wireshark
Component: GTK+ UI
OS: All
Platform: All
Version: 1.2.0

Attachments:

packet-iec104.diff: Patch file
TestDissectIec104.pcap: Test file
TestDissectIec104_OK_27903.txt: Test result, revision 27903
TestDissectIec104_ERR_27908.txt: Test result, revision 27908
packet-iec104.diff: Final patch file