ies = []
ies.append({ "ie_value" : "RAB Context", "presence" : "Mandatory", "reference" : "7.7.19"})
ies.append({ "ie_value" : "Source RNC PDCP context info", "presence" : "Optional", "reference" : "7.7.61"})
ies.append({ "ie_value" : "PDU Numbers", "presence" : "Optional", "reference" : "7.7.74"})
msg_list[key]["ies"] = ies
