{
    "tpdu_type": {
        "ED": 1,
        "EA": 2,
        "UD": 4,
        "RJ": 5,
        "AK": 6,
        "ER": 7,
        "DR": 8,
        "DC": 12,
        "CC": 13,
        "CR": 14,
        "DT": 15
    },
    "tpdu_type_desc": {
        "1": "ED Expedited Data",
        "2": "EA Expedited Data Acknowledgement",
        "4": "UD",
        "5": "RJ Reject",
        "6": "AK Data Acknowledgement",
        "7": "ER TPDU Error",
        "8": "DR Disconnect Request",
        "12": "DC Disconnect Confirm",
        "13": "CC Connect Confirm",
        "14": "CR Connect Request",
        "15": "DT Data"
    },
    "DR_reason": {
        "0": "Reason not specified",
        "1": "Congestion at TSAP",
        "2": "Session entity not attached to TSAP",
        "3": "Address unknown (at TCP connect time)",
        "128": "Normal disconnect initiated by the session entity",
        "129": "Remote transport entity congestion at connect request time",
        "130": "Connection negotiation failed",
        "131": "Duplicate source reference",
        "132": "Mismatched references",
        "133": "Protocol Error",
        "135": "Reference overflow",
        "136": "Connection request refused on this network connection",
        "138": "Header or parameter length invalid"
    },
    "ER_reason": {
        "0": "Reason not specified",
        "1": "Invalid parameter code",
        "2": "Invalid TPDU type",
        "3": "Invalid parameter value"
    },
    "var_type": {
        "ATN_EC_32": 8,
        "ATN_EC_16": 9,
        "ACK_TIME": 133,
        "RES_ERROR": 134,
        "PRIORITY": 135,
        "TRANSIT_DEL": 136,
        "THROUGHPUT": 137,
        "SEQ_NR": 138,
        "REASSIGNMENT": 139,
        "FLOW_CNTL": 140,
        "TPDU_SIZE": 192,
        "SRC_TSAP": 193,
        "DST_TSAP": 194,
        "CHECKSUM": 195,
        "VERSION_NR": 196,
        "PROTECTION": 197,
        "OPT_SEL": 198,
        "PROTO_CLASS": 199,
        "CLEARING_INFO": 224,
        "PREF_MAX_TPDU_SIZE": 240,
        "INACTIVITY_TIMER": 242
    },
    "var_type_desc": {
        "8": "ATN extended checksum - 16 bit",
        "9": "ATN extended checksum - 32 bit",
        "133": "ack time",
        "134": "res error",
        "135": "priority",
        "136": "transit delay",
        "137": "throughput",
        "138": "seq number",
        "139": "reassignment",
        "140": "flow control",
        "192": "tpdu-size",
        "193": "src-tsap",
        "194": "dst-tsap",
        "195": "checksum",
        "196": "version",
        "197": "protection",
        "198": "options",
        "199": "proto class",
        "224": "additional connection clearing info",
        "240": "preferred max TPDU size",
        "242": "inactivity timer"
    }
}