ies = []
ies.append({ "ie_type" : "Cause", "ie_value" : "Cause", "presence" : "M", "instance" : "0", "comment" : ""})
ies.append({ "ie_type" : "EBI", "ie_value" : "Linked EPS Bearer ID", "presence" : "C", "instance" : "0", "comment" : "If the response corresponds to the bearer deactivation procedure in case all the bearers associated with the default bearer of a PDN connection shall be released, this IE shall be included on the S4/S11, S5/S8 and S2a/S2b interfaces to indicate the default bearer associated with the PDN being disconnected."})
ies.append({ "ie_type" : "Bearer Context", "ie_value" : "Bearer Contexts", "presence" : "C", "instance" : "0", "comment" : "It shall be used on the S4/S11, S5/S8 and S2a/S2b interfaces for bearers different from default one. In this case at least one bearer shall be included.Several IEs with this type and instance values shall be included as necessary to represent a list of Bearers.Used for dedicated bearers. When used, at least one dedicated bearer shall be present. All the bearer contexts included in the EPS Bearer IDs IE of the corresponding Delete Bearer Request shall be included."})
ies.append({ "ie_type" : "Recovery", "ie_value" : "Recovery", "presence" : "C", "instance" : "0", "comment" : "This IE shall be included on the S4/S11, S5/S8 and S2a/S2b interfaces if contacting the peer for the first time "})
ies.append({ "ie_type" : "FQ-CSID", "ie_value" : "MME-FQ-CSID", "presence" : "C", "instance" : "0", "comment" : "This IE shall be included by MME the on S11 interface and shall be forwarded by the SGW on S5/S8 interface according to the requirements in 3GPP TS 23.007 [17]."})
ies.append({ "ie_type" : "FQ-CSID", "ie_value" : "SGW-FQ-CSID", "presence" : "C", "instance" : "1", "comment" : "This IE shall be included by the SGW on the S5/S8 interface according to the requirements in 3GPP TS 23.007 [17]."})
type_list["FQ-CSID"]["max_instance"] = "2"
ies.append({ "ie_type" : "FQ-CSID", "ie_value" : "ePDG-FQ-CSID", "presence" : "C", "instance" : "2", "comment" : "This IE shall be included by the ePDG on the S2b interface according to the requirements in 3GPP TS 23.007 [17]."})
type_list["FQ-CSID"]["max_instance"] = "3"
ies.append({ "ie_type" : "FQ-CSID", "ie_value" : "TWAN-FQ-CSID", "presence" : "C", "instance" : "3", "comment" : "This IE shall be included by the TWAN on the S2a interface according to the requirements in 3GPP TS 23.007 [17]."})
ies.append({ "ie_type" : "PCO", "ie_value" : "Protocol Configuration Options", "presence" : "CO", "instance" : "0", "comment" : "An MME/SGSN shall include the PCO IE if such information was received from the UE. If the SGW receives this IE, the SGW shall forward it to PGW on the S5/S8 interface."})
ies.append({ "ie_type" : "UE Time Zone", "ie_value" : "UE Time Zone", "presence" : "CO", "instance" : "0", "comment" : "This IE shall be included, if available, by the MME on the S11 interface or by the SGSN on the S4 interface."})
ies.append({ "ie_type" : "ULI", "ie_value" : "User Location Information", "presence" : "CO", "instance" : "0", "comment" : "This IE shall be included by the MME on the S11 interface or by the SGSN on the S4 interface. The CGI/SAI shall be included by SGSN and the ECGI shall be included by MME. See NOTE 2."})
ies.append({ "ie_type" : "ULI Timestamp", "ie_value" : "ULI Timestamp", "presence" : "CO", "instance" : "0", "comment" : "This IE shall be included on the S4/S11 interface if the ULI IE is present. It indicates the time when the User Location Information was acquired. The SGW shall include this IE on S5/S8 if the SGW receives it from the MME/SGSN. See NOTE 1."})
ies.append({ "ie_type" : "TWAN Identifier", "ie_value" : "TWAN Identifier", "presence" : "CO", "instance" : "0", "comment" : "This IE shall be included by the TWAN on the S2a interface as specified in 3GPP TS 23.402 [45]. "})
ies.append({ "ie_type" : "TWAN Identifier Timestamp", "ie_value" : "TWAN Identifier Timestamp", "presence" : "CO", "instance" : "0", "comment" : "This IE shall be included by the TWAN on the S2a interface if the TWAN Identifier IE is present. It shall indicate the time when the TWAN acquired the TWAN Identifier information. "})
ies.append({ "ie_type" : "Overload Control Information", "ie_value" : "MME/S4-SGSN's Overload Control Information", "presence" : "O", "instance" : "0", "comment" : "During an overload condition, the MME/S4-SGSN may include this IE on the S11/S4 interface if the overload control feature is supported by the MME/S4-SGSN and is activated for the PLMN to which the PGW belongs (see clause 12.3.11).When present, the MME/S4-SGSN shall provide only one instance of this IE, representing its overload information."})
ies.append({ "ie_type" : "Overload Control Information", "ie_value" : "SGW's Overload Control Information", "presence" : "O", "instance" : "1", "comment" : "During an overload condition, the SGW may include this IE over the S5/S8 interface if the overload control feature is supported by the SGW and is activated for the PLMN to which the PGW belongs (see clause 12.3.11).When present, the SGW shall provide only one instance of this IE, representing its overload information."})
ies.append({ "ie_type" : "IP Address", "ie_value" : "MME/S4-SGSN Identifier", "presence" : "CO", "instance" : "0", "comment" : "If the overload control feature is supported by the MME/S4-SGSN and is activated for the PLMN to which the PGW belongs (see subclause 12.3.11), the MME/S4-SGSN shall include this IE on the S11/S4 interface when there is at least one bearer remaining for the given PDN connection after the bearer deletion, and the PGW has not been updated with the identity of the currently serving MME/S4-SGSN, i.e. if no other message carrying MME/S4-SGSN identity has been sent to the PGW during/after an inter-MME/S4-SGSN intra-SGW mobility procedure."})
ies.append({ "ie_type" : "Overload Control Information", "ie_value" : "TWAN/ePDG's Overload Control Information", "presence" : "O", "instance" : "2", "comment" : "During an overload condition, the TWAN/ePDG may include this IE over the S2a/S2b interface if the overload control feature is supported by the TWAN/ePDG and is activated for the PLMN to which the PGW belongs (see clause 12.3.11).When present, the TWAN/ePDG shall provide only one instance of this IE, representing its overload information."})
type_list["TWAN Identifier"]["max_instance"] = "1"
ies.append({ "ie_type" : "TWAN Identifier", "ie_value" : "WLAN Location Information", "presence" : "CO", "instance" : "1", "comment" : "The ePDG shall include this IE on the S2b interface if the WLAN Location Information is available. "})
type_list["TWAN Identifier Timestamp"]["max_instance"] = "1"
ies.append({ "ie_type" : "TWAN Identifier Timestamp", "ie_value" : "WLAN Location Timestamp", "presence" : "CO", "instance" : "1", "comment" : "The ePDG shall include this IE on the S2b interface, if the WLAN Location Timestamp is available. "})
ies.append({ "ie_type" : "Port Number", "ie_value" : "UE UDP Port", "presence" : "CO", "instance" : "0", "comment" : "The ePDG shall include this IE on the S2b interface if NAT is detected and UDP encapsulation is used."})
ies.append({ "ie_type" : "F-Container", "ie_value" : "NBIFOM Container", "presence" : "CO", "instance" : "0", "comment" : "This IE shall be included on the S11/S4 or S2a/S2b interfaces if the MME/S4-SGSN or the TWAN/ePDG receives a NBIFOM Container from the UE as specified in 3GPP TS 24.161 73]. The Container Type shall be set to 4."})
ies.append({ "ie_type" : "Port Number", "ie_value" : "UE TCP Port	", "presence" : "CO", "instance" : "1", "comment" : "The ePDG shall include this IE on the S2b interface if NAT is detected and TCP encapsulation is used."})
msg_list[key]["ies"] = ies
