2002-08-12 2011-12-01 IETF Review 0 Management (MGMT) Message 1 Transfer Messages 2 SS7 Signalling Network Management (SSNM) Messages 3 ASP State Maintenance (ASPSM) Messages 4 ASP Traffic Maintenance (ASPTM) Messages 5 Q.921/Q.931 Boundary Primitives Transport (QPTM) Messages 6 MTP2 User Adaptation (MAUP) Messages 7 Connectionless Messages 8 Connection-Oriented Messages 9 Routing Key Management (RKM) Messages 10 Interface Identifier Management (IIM) Messages 11 M2PA Messages 12 Security Messages 13 DPNSS/DASS2 Boundary Primitives Transport Messages 14 V5 Boundary Primitives Transport Messages (V5PTM) 15-127 Unassigned 128-255 Reserved for IETF-Defined Message Class extensions IETF Review 0 Error (ERR) 1 Notify (NTFY) 2 TEI Status Request 3 TEI Status Confirm 4 TEI Status Indication 5 DLC Status Request 6 DLC Status Confirm 7 DLC Status Indication 8 TEI Query Request 9-127 Unassigned 128-255 Reserved for IETF-Defined MGMT extensions IETF Review 0 Reserved 1 Payload Data (DATA) 2-127 Unassigned 128-255 Reserved for IETF-Defined Transfer extensions IETF Review 0 Reserved 1 Destination Unavailable (DUNA) 2 Destination Available (DAVA) 3 Destination State Audit (DAUD) 4 Signalling Congestion (SCON) 5 Destination User Part Unavailable (DPU) 6 Destination Restricted (DRST) 7-127 Reserved by the IETF 128-255 Reserved for IETF-Defined SSNM extensions IETF Review 0 Reserved 1 ASP Up (UP) 2 ASP Down (DOWN) 3 Heartbeat (BEAT) 4 ASP Up Ack (UP ACK) 5 ASP Down Ack (DOWN ACK) 6 Heartbeat Ack (BEAT ACK) 7-127 Unassigned 128-255 Reserved for IETF-Defined ASPSM extensions IETF Review 0 Reserved 1 ASP Active (ACTIVE) 2 ASP Inactive (INACTIVE) 3 ASP Active Ack (ACTIVE ACK) 4 ASP Inactive Ack (INACTIVE ACK) 5-127 Unassigned 128-255 Reserved for IETF-Defined ASPTM extensions IETF Review 0 Reserved 1 Data Request Message 2 Data Indication Message 3 Unit Data Request Message 4 Unit Data Indication Message 5 Establish Request 6 Establish Confirm 7 Establish Indication 8 Release Request 9 Release Confirm 10 Release Indication 11-127 Unassigned 128-255 Reserved for IETF-Defined QPTM extensions IETF Review 0 Reserved 1 Data 2 Establish Request 3 Establish Confirm 4 Release Request 5 Release Confirm 6 Release Indication 7 State Request 8 State Confirm 9 State Indication 10 Data Retrieval Request 11 Data Retrieval Confirm 12 Data Retrieval Indication 13 Data Retrieval Complete Indication 14 Congestion Indication 15 Data Acknowledge 16-127 Unassigned 128-255 Reserved for IETF-Defined MAUP extensions IETF Review 0 Reserved 1 Connectionless Data Transfer (CLDT) 2 Connectionless Data Response (CLDR) 3-127 Unassigned 128-255 Reserved for IETF-Defined Message Class Extensions IETF Review 0 Reserved 1 Connection Request (CORE) 2 Connection Acknowledge (COAK) 3 Connection Refused (COREF) 4 Release Request (RELRE) 5 Release Complete (RELCO) 6 Reset Confirm (RESCO) 7 Reset Request (RESRE) 8 Connection Oriented Data Transfer (CODT) 9 Connection Oriented Data Acknowledge (CODA) 10 Connection Oriented Error (COERR) 11 Inactivity Test (COIT) 12-127 Unassigned 128-255 Reserved for IETF-Defined Message Class Extensions IETF Review 0 Reserved 1 Registration Request (REG REQ) 2 Registration Response (REG RSP) 3 Deregistration Request (DEREG REQ) 4 Deregistration Response (DEREG RSP) 5-127 Unassigned 128-255 Reserved for IETF-Defined RKM extensions IETF Review 0 Reserved 1 Registration Request (REG REQ) 2 Registration Response (REG RSP) 3 Deregistration Request (DEREG REQ) 4 Deregistration Response (DEREG RSP) 5-127 Unassigned 128-255 Reserved for IETF-Defined IIM extensions IETF Review 1 User Data 2 Link Status IETF Review 1 STARTTLS message 2 STARTTLS_ACK message IETF Review 0 Reserved 1 Data Request Message 2 Data Indication Message 3 Unit Data Request Message 4 Unit Data Indication Message 5 Establish Request 6 Establish Confirm 7 Establish Indication 8 Release Request 9 Release Confirm 10 Release Indication IETF Review 1 Data Request Message 2 Data Indication Message 3 Unit Data Request Message 4 Unit Data Indication Message 5 Establish Request 6 Establish Confirm 7 Establish Indication 8 Release Request 9 Release Confirm 10 Release Indication 11 Link Status Start Reporting 12 Link Status Stop Reporting 13 Link Status Indication 14 Sa-Bit Set Request 15 Sa-Bit Set Confirm 16 Sa-Bit Status Request 17 Sa-Bit Status Indication 18 Error Indication IETF Review 0 Reserved 1 Interface Identifier (Integer) 2 Reserved 3 Interface Identifier (Text) 4 Info String 5 DLCI 6 Routing Context 7 Diagnostic Information 8 Interface Identifier (Integer Range) 9 Heartbeat Data 10 Reason 11 Traffic Mode Type 12 Error Code 13 Status Type/Information 14 Protocol Data 15 Release Reason 16 Status 17 ASP Identifier 18 Affected Point Code 19 Correlation Id 20 Registration Result 21 Deregistration Result 22 Registration Status 23 Deregistration Status 24 Local Routing Key Identifier 25-128 Unassigned 129 DLCI/EFA 130 Link Status 131 Bit ID/Bit Value 132 Error Reason 133-255 Unassigned 256 Unassigned 257 SS7 Hop Counter 258 Source Address 259 Destination Address 260 Source Reference Number 261 Destination Reference Number 262 SCCP Cause 263 Sequence Number 264 Receive Sequence Number 265 ASP Capabilities 266 Credit 267 Data 268 Cause / User 269 Network Appearance 270 Routing Key 271 DRN Label 272 TID Label 273 Address Range 274 SMI 275 Importance 276 Message Priority 277 Protocol Class 278 Sequence Control 279 Segmentation 280 Congestion Level 281-511 Unassigned 512 Network Appearance 513 Reserved 514 Reserved 515 Reserved 516 User/Cause 517 Congestion Indications 518 Concerned Destination 519 Routing Key 520 Registration Result 521 Deregistration Result 522 Local_Routing Key Identifier 523 Destination Point Code 524 Service Indicators 525 Reserved 526 Originating Point Code List 527 Circuit Range 528 Protocol Data 529 Reserved 530 Registration Status 531 Deregistration Status 532-767 Unassigned 768 Protocol Data 1 769 Protocol Data 2 (TTC) 770 State Request 771 State Event 772 Congestion Status 773 Discard Status 774 Action 775 Sequence Number 776 Retrieval Result 777 Link Key 778 Local-LK-Identifier 779 Signalling Data Terminal (SDT) Identifier 780 Signalling Data Link (SDL) Identifier 781 Registration Result 782 Registration Status 783 De-Registration Result 784 De-Registration Status 785-32768 Unassigned 32769 Global Title 32770 Point Code 32771 Subsystem Number 32772 IPv4 Address 32773 Hostname 32774 IPv6 Addresses 32775-65534 Unassigned 65535 Reserved