Table of Contents. SS7 Pocket Guide 1

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2 Table of Contents SS7 Network & Link Designations SS7 Protocol Levels Signal Unit Format LSSU Status Field Format LSSU Status Field Definitions Initial Alignment Process MTP 2 Timers Service Information Octet Encoding ANSI / Bellcore Routing Label ITU Routing Labels International Point Code Structure SNM Message Structure SNM Heading Code Table Management Inhibiting Message Structure Signaling Network Testing Code Table SNM & SNT Glossary Message Signal Units Structure ISDN User Part Message Structure (General) ISUP Message Structure and Pointers ISUP CIC Field (ANSI & ITU) ISUP Message Code Table ISUP Parameter Code Table ISUP Message / Parameter Table ISUP Call Setup Message Flow (Basic) TUP Heading Code Glossary TUP Heading Code Table SCCP Messages and Protocol Classes SCCP Parameter Code Table SCCP Management Message Format SCCP Connection Oriented Message Flow SCCP Message / Parameter Table SCCP Connectionless Message Flow TCAP Message Structure (General) TCAP Transaction Portion TCAP Component Portion Glossary of SS7 Acronyms SS7 Pocket Guide 1

3 Network and Link Designations Local&STP s& Pair& Regional&STP s& Pair& A& A& SCP Local&STP s& Pair& Local&STP s& Pair& F& SSP& SSP& A& A& A& A& C& D& D& D& D& C& D& A& A& D& D& D& C& B& B& B& B& C& A& A& A& A& E& SSP& SSP& E& SCP A &SSP&OR&SCP&TO&STP&Pair& B &STP&Pair&to&STP&Pair&Same&Level& C &Node&of&STP&Pair&to&Other&Node&of&Pair& D &STP&Pair&to&STP&Pair&Different&Level& E &SSP&to&STP&Pair&in&Different&Region& F &SSP&to&SSP&(Associated&Signaling)& SSP& SS7 Protocol Levels OMAP$ ASE$ TCAP$ For$further$ study$ SCCP$ MAP$ ISDN$ User$ Part$ T$ U$ e$ s$ l$ e$ e$ r$ p$ $ h$ P$ o$ a$ n$ r$ e$ t$ MTP$Level$3$ MTP$Level$2$ MTP$Level$1$ SS7 Pocket Guide 2

4 Signal Unit Format FISU S P F" CK" A LI" R E F" I" B" R E S E R V E D E B" S FSN" E I" BSN" F" R V B" E 8" 16" 7" 9" 1" 3" 12" 1" 3" 12" 8" R D LI"="0" First Bit Transmitted LSSU S P F" CK" SF" A LI" R E F" I" B" E B" S FSN" E I" BSN" F" R V B" E 8" 16" 8"or16" 7" 9" 1" 3" 12" 1" 3" 12" 8" R E S E R V E D R D LI"="1"or"2" First Bit Transmitted MSU S P F" CK" SIF" A SIO" LI" R E F" I" B" E B" S FSN" E I" BSN" F" R V B" E 8" 16" 8N,N">"2" 8" 7" 9" 1" 3" 12" 1" 3" 12" 8" R E S E R V E D R D LI"=">"2" First Bit Transmitted LSSU Status Field Format F& CK& Octet&2& H&G&F&E&D&C&B&A& SF& Octet&1& H&G&F&E&D&C&B&A& S& P& A& R& E& First&Bit& 8& 16& 8/16& 2& 6& 1& 7& 1& 7& 8& Transmi,ed& LI& Value& Of& 1&or&2& F& I& B& FSN& B& I& B& BSN& F& Notes: SF Octet 1 ( Bits A,B,&C are used and all other bits are SF Octet 1 ( Bits A,B,&C are used and all other bits are ignored by the receiving end) ignored by the receiving end) C B A C B A Status indication of O (SIO) Out of Alignment Status indication of O (SIO) Out of Alignment Status Status indication indication of of N N (SIN) (SIN) Normal Normal Alignment Alignment Status indication of E (SIE) Emergency Alignment Status indication of E (SIE) Emergency Alignment Status indication of OS (SIOS) Out of Service Status indication of OS (SIOS) Out of Service Status indication of PO (SIPO) Processor Outage Status indication of PO (SIPO) Processor Outage Status Status indication indication of of B B (SIB) (SIB) Busy Busy SF Octet 2 ( is ignored by the receiving end if present SF Octet 2 ( is ignored by the receiving end if present -- it is required that the receiving end accept -- it is required that the receiving end accept LSSU LSSU with with either either a a 1 1 or or 2 2 octet octet SF) SF) SS7 Pocket Guide 3

5 LSSU Status Field Definitions SF Octet 1 ( Bits A,B,&C are used and all other bits are SF Octet 1 ( Bits A,B,&C are used and all other bits are ignored by the receiving end) ignored by the receiving end) C B A C B A Status indication of O (SIO) Out of Alignment Status indication of O (SIO) Out of Alignment Status Status indication indication of of N N (SIN) (SIN) Normal Normal Alignment Alignment Status indication of E (SIE) Emergency Alignment Status indication of E (SIE) Emergency Alignment Status indication of OS (SIOS) Out of Service Status indication of OS (SIOS) Out of Service Status indication of PO (SIPO) Processor Outage Status indication of PO (SIPO) Processor Outage Status Status indication indication of of B B (SIB) (SIB) Busy Busy SF Octet 2 ( is ignored by the receiving end if present SF Octet 2 ( is ignored by the receiving end if present -- it is required that the receiving end accept -- it is required that the receiving end accept LSSU LSSU with with either either a a 1 1 or or 2 2 octet octet SF) SF) Initial Alignment Process (Best Case) Signaling Data Link A End Power Up State 00 Idle Start Timer T2 State 01 Not Aligned Stop Timer T2 Start Timer T3 State 02 Aligned Set Timer T4 to Normal Stop Timer T3 Start Timer T4 State 03 Proving Timer T4 Expires Start Timer T1 Aligned Ready Stop Timer T1 In Service SIOS SIOS SIOS SIOS SIO SIO SIN SIN SIN SIN FISU FISU MSU or FISU Signaling Data Link Z End SIOS SIOS SIOS SIOS SIO or SIN SIN or SIE SIN SIN FISU or MSU Power Up Assume SIN Notes: SS7 Pocket Guide 4

6 MTP Level 2 Timers Value Timer Name ITU ANSI T1 "Aligned Ready" 40 to 50 Sec. 13 to 30 Sec. Nom. 13 Sec. T2 "Not Aligned" 5 to 50 Sec. 5 to 30 Sec. Low: 5 to 50 Sec. Low: 5 to 14 Sec. Nom Sec. High: 70 to 150 Sec. High: 16 to 30 Nom. 23 Sec. T3 "Aligned" 1 to 1.5 Sec. 5 to 14 Sec. Nom Sec. T4 "Proving Period" Normal: 7.5 to 9.5 Sec. Nom. 8.2 Sec. 56kbps Normal: 2.3 Sec +/- 10% Emergency: 400 to 600 ms Nom. 500 ms 56kbps Emergency:.6 Sec +/- 10% Normal 30 Sec. +/- 10% Emergency 5 Sec +/- 10% T5 "Sending SIB" 80 to 120 ms 80 to 120 ms T6 "Remote Congestion" 3 to 6 Sec. 56, 64kbps & mbps: 1 to 6 Sec. T7 "Excessive Delay Acknowledgment".5 to 2 Sec. (PCR.8 to 2 Sec.) 56, 64kbps & mbps:.5 to 2 Sec. T8 "Errored Interval Monitor" 100 ms for 1.536mbps SS7 Pocket Guide 5

7 Service Information Octet Encoding F& CK& SIF& SIO& LI& 8& 16& 8N,& N>2& F& I& B& FSN& B& I& B& BSN& 8& 2& 6& 1& 7& 1& 7& 8& F& First&Bit& Transmi,ed& D&C&B&A& Sub&A&Service&Field& D&C&B&A& Service&Indicator& First&Bit&Transmi,ed& D C DESCRIPTION 0 0 International Message 0 1 Spare (For International Use) 1 0 National Network 1 1 Reserved for national use B A If bits D & C are coded 10 or 11 then the A & B bits are: 0 0 Priority Priority Priority Priority 3 Assigned to MTP & SCCP that is critical to network performance D C B A DESCRIPTION Signaling Network Management Messages Signaling network testing & Maintenance regular messages Signaling network testing & maintenance special messages SCCP Telephone User Part ISDN User Part Data User Part (Call & Circuit related messages) Data User Part (facility registration & cancellation messages) MTP Testing User Part Broadband ISDN User Part Satellite ISDN User Part Spare Spare Reserved for individual network use Reserved for individual network use Spare ANSI Routing Label S& p& F& B& F& CK& SIF& SIO& a& LI& I& FSN& I& BSN& F& r& B& B& e& 8& 16& 8N,& N>2& 8& 2& 6& 1& 7& 1& 7& 8& First&Bit& Transmi,ed& AddiBonal&level& 3+&informaBon&i.e.& Network&Management,& ISUP,&TUP,&SCCP,&TCAP& SLS& OPC& DPC& 8& 24& 24& RouBng&Label& SS7 Pocket Guide 6

8 ITU Routing Label F& CK& SIF& SIO& S& p& a& r& e& LI& F& I& B& FSN& B& I& B& BSN& F& 8& 16& 8N,& N>2& 8& 2& 6& 1& 7& 1& 7& 8& First&Bit& Transmi,ed& AddiBonal&level& 3+&informaBon&i.e.& Network&Management,& ISUP,&TUP,&SCCP& SLC& OPC& DPC& 4& 14& 14& RouBng&Label& International Point Code Structure N M L Zone Identification K J I H G F E D Area / Network Identification C B A Signaling Point Identification "The"Zone"sub"field"iden0fies"the"geographical"zone"within"the" """"world" ""The"Area/Network"sub"field"iden0fies"the"geographical"area" """"within"the"zone" ""The"Signaling"Point"sub"field"iden0fies"the"specific" """""Interna0onal"Gateway" Signaling Network Management Message Structure F& CK& SIF& SIO& LI& 8& 16& 8N,& N>2& F& I& B& FSN& B& I& B& BSN& 8& 2& 6& 1& 7& 1& 7& 8& F& First&Bit& Transmi,ed& 0&0&0&0&0& FSN&of& last&msu& accepted& SLC& Heading& Code& H1& Heading& Code& H0& SLS& OPC& DPC& 5& 7& 4& 4& 4& 8& 24& 24& RouBng&Label& Signaling Network Management Heading Code Table Signaling Network Testing Code Table SS7 Pocket Guide 7

9 Signaling Network Management Heading Code Table Mes s age H Group H CHM 0001 COO COA CBD CBA ECM 0010 ECO ECA FCM 0011 RCT TFC TFM 0100 TFP TCP TFR TCR TFA TCA RSM 0101 RSP RSR RCP RCR MIM 0110 LIN LUN LIA LUA LID LFU LLI LRI TRM 0111 TRA TRW DLM 1000 DLC CSS CNS CNP 1001 UFC 1010 UPU Signaling Network Testing Code H Message Group H1 SNT SLTM SLTA Management Inhibiting Message Structure F" CK" SIF" SIO" LI" 8" 16" 8N," N>2" F" I" B" FSN" B" I" B" BSN" F" 8" 2" 6" 1" 7" 1" 7" 8" First Bit Transmitted 0"0"0"0"" 4" SLC" 4" Heading" Code" H1" 4" Heading" Code" H0" D"C"B"A" 0"1"1"0" 4" H1 Signal Definition SLS" OPC" DPC" 8" 24" 24" RouAng"Label" D C B A Link Inhibit Signal Link Uninhibit Signal Link Inhibit Acknowledgment Link Uninhibit Acknowledgment Link Inhibit Denied Signal Link Force Uninhibit Link Local Inhibit Test Signal Link Remote Inhibit Test Signal SS7 Pocket Guide 8

10 Signaling Network Management and Signaling Network Testing Acronyms CBA CBD CNM CNP CNS COA COO CSS DLC DLM ECA ECM ECO FCM LFU LIA LID LIN LLI LRI LUA LUN MSG MIM RCP RCR RCT RSM RSP RSR SLTA SLTM TCA TCP TCR TFA TFC TFM TFP TFR TRA TRM TRW UFC UPU Changeback Acknowledgment Signal Changeback Declaration Signal Changeover and Changeback Messages Connection Not Possible Connection Not Successful Changeover Acknowledgment Changeover Order Connection Successful Signaling Data Link Connection Order Signal Signaling Data Link Connection Order Message Emergency Changeover Acknowledgment Emergency Changeover Message Emergency Changeover Order Signal Signaling Traffic Flow Control Messages Link Forced Uninhibit Message Link Inhibit Acknowledgment Message Link Inhibit Denied Message Link Inhibit Message Link Local Inhibit Signal Link Remote Inhibit Test Signal Link Uninhibit Acknowledgment Link Uninhibit Message Message Group Management Inhibiting Messages Signaling Route Set Cluster Prohibited Signal Signaling Route Set Test Cluster Restricted Signal Signaling Route Set Congestion Test Signal Signaling Route Set Test Signaling Route Set Test Prohibited Signaling Route Set Test Restricted Signaling Link Test Acknowledgment Signaling Link Test Message Transfer Cluster Allowed Signal Transfer Cluster Prohibited Signal Transfer Cluster Restricted Signal Transfer Allowed Signal Transfer Controlled Signal Transfer Messages Including (TFA,TFP, &TFR) Transfer Prohibited Signal Transfer Restricted Signal Traffic Restart Allowed Signal Traffic Restart Messages Traffic Restart Waiting MTP User Flow Control Messages User Part Unavailable SS7 Pocket Guide 9

11 Message Signal Unit Message Structure F CK SIF SIO LI 8 MTP 2 MTP N, N>2 S P A R E F I B MTP 2 FSN B I B BSN F First Bit Transmitted Signaling Information Routing Label TUP ISUP TUP Parameters ISUP Parameters H1 Message Type Message Type H0 Message Group Circuit Identification Code SCCP Optional Parameters User Data SCCP Header Message Type TCAP Component Component Portion N Component 1 Dialog Portion Transaction Portion ISUP User Part Message Structure F CK SIF SIO LI F I B FSN B I B BSN F N, N> Optional Part Mandatory Variable Part Mandatory Fixed Part Message Type Circuit Identification Code Routing Label Routing Label -- Address information for MTP Routing Circuit Identification Code -- Circuit that is to be assigned to a specific call Message Type -- Identifies the specific ISDN User Part Message Mandatory Fixed Part -- Those parameters that are mandatory and of a fixed length for a specific message type. Mandatory Variable Part -- Those parameters that are mandatory and of variable length for a specific message type. Optional Part -- those parameters that are optional for a specific message type. These are usually based on class of service, type of call, or features provided to the subscriber. Notes: SS7 Pocket Guide 10

12 ISUP Message Structure and Pointers Routing Label Circuit 8 7 Identification Code 3 2 (LSBs) 1 Spare CCT. Ident. Code (MSBs) Routing Label Message Type Circuit Mandatory Identification Parameter Code (LSBs) A Mandatory Message Parameter Type F Pointer Mandatory To Parameter AM Pointer Mandatory To Parameter FP Pointer Pointer To Start To Parameter Of Optional M Part Length Indicator Of Parameter M Pointer To Parameter P Parameter M Pointer To Start Of Optional Part Length Indicator Of Parameter M Length Indicator Of Parameter P Parameter M Parameter P Length Parameter Indicator Of Name Parameter = X P Parameter Parameter X Length P Parameter Parameter Name X= X Parameter X Name Length = Z Parameter Parameter Z Length X Parameter Parameter Name Z= Z End Parameter Of Optional Z Parameters Length Parameter Z ISUP CIC Field ANSI & ITU Optional Part Spare CCT. Ident. Code (MSBs) End Of Optional Parameters S P F CK SIF SIO A LI R E N, N>2 Mandatory Variable Part Mandatory Fixed Part F I B FSN Order of Bit Transmission Order of Octet Transmission Mandatory Fixed Part Mandatory Variable Part Mandatory Variable Part B I B Optional Part BSN Message Type Circuit Identification Code Order of Bit Transmission Order of Octet Transmission Mandatory Fixed Part Optional Part F CIC Least Significant CIC Most Spare Significant CIC Least Significant CIC Most Spare Significant Routing Label ANSI ITU IS TU AC AC AC AD AN AN AN BL BLO BSM CB CC CC CC CC CFL CG CH CL CN CO CSM SS7 Pocket Guide 11 30

13 ISUP Message Code Table Acronym Message Name ACM Address Complete ANM Answer BLA Blocking Acknowledgment BLO Blocking CCR Continuity Check Request CFN Confusion CGB Circuit Group Blocking CGBA CGB Acknowledgment CGU Circuit Group Unblocking CGUA CGU Acknowledgment CMA Call Modification Completed CMR Call Modification Request CMRJ Call Modification Reject CON Connect COT Continuity CPG Call Progress CRG Charge Information CQM Circuit Group Query CQR Circuit Group Query Response DRS Delayed Release FAA Facility Accepted FAR Facility Request FOT Forward Transfer FRJ Facility Reject GRA Circuit Group Reset Acknowledgment GRS Circuit Group Reset IAM Initial Address INF Information INR Information Request LPA Loop Back Acknowledgment OLM Overload PAM Pass Along REL Release RES Resume RLC Release Complete RSC Reset Circuit SAM Subsequent Address Message SUS Suspend UBL Unblocking UBA Unblocking Acknowledgment UCIC Unequipped Circuit Identification Code USR User-to-User Information SS7 Pocket Guide 12

14 ISUP Parameter Code Table Parameter Name Access Delivery Access Transport Automatic Congestion Level Backward Call Indicator Backward GVNS Business Group CCSS Call Diversion Information Call Diversion Treatment Indicator Call History Information Call Offering Treatment Indicator Call Reference Call Transfer Number Call Transfer Reference Called IN Number Called Party Number Calling Party Number Calling Party Category Carrier Identification Carrier Selection Information Cause Indicators Charge Number Circuit Assignment Map Circuit Group Characteristic Indicator Circuit Group Supervision Message Type Indicator Circuit Identification Name Circuit State Indicator Circuit Validation Response Indicator Closed User Group Interlock Code Collect Call Request Common Language Location Identifier Conference Treatment Indicator Connected Number Connection Request Continuity Indicators Correlation Id Display Information Echo Control Information Egress End of Optional Parameters Event Information Facility Indicator Forward Call Indicator Forward GVNS Generic Address Generic Digits Generic Name Generic Number Generic Notification Indicator Hop Counter Index SIP Pocket Guide 13

15 ISUP Parameter Code Table (Continued) Parameter Name Information Indicators Information Request Indicators Jurisdiction Location Number Loop Prevention Indicator MCID Request Indicator MCID Response Indicator MLPP Precedence Message Compatibility Information Nature of Connection Indicators Network Management Controls Network Specific Facilities Network Transport Notification Indicator Operator Services Information Optional Backward Call Indicators Optional Forward Call Indicators Original Called Number Origination ISC Point Code Originating Line Information Outgoing Trunk Number Parameter Compatibility Information Precedence Propagation Delay Counter Range and Status Redirect Capability Redirect Counter Redirecting Number Redirection Information Redirection Number Redirection Number Restriction Remote Operations SCF Id Service Activation Service Code Indicator Signaling Point Code Special Processing Request Subsequent Number Suspend/Resume Indicators Transaction Request Transit Network Selection Transmission Medium Requirements Transmission Medium Requirements Prime Transmission Medium Used UID Action Indicators UID Capability Indicators User Service Information User Service Information Prime User Teleservices Information User-to-User Indicators User-to-User Information SS7 Pocket Guide 14

16 ISUP Message / Parameter Table Message Type ACM ANM BLA BLO CCR CFN CGB CGBA CGU CGUACON(ITU)COT CPG CRA(ANSI) CQM CQR(ANSI)CRM(ANSI) Parameter Access Delivery Information O(ITU) O(ITU) O(ITU) O(ITU) Access Transport O O O(ITU) O Automatic Congestion Level Backward Call Indicator F O F(ITU) O Backward GVNS O(ITU) O(ITU) O(ITU) Business Group O(ANSI) O(ANSI) O(ANSI) CCSS Call Diversion Information O(ITU) O(ITU) Call Diversion Treatment Indicators Call History Information O(ITU) O(ITU) O(ITU) Call Modification Indicator Call Offeering Treatment Indicators Call Reference O O O O Called IN Number Call Transfer Number 0(ITU) Call Transfer Reference Called Party Number Calling Party Number Calling Party Category Carrier Identification Carrier Selection Information Cause Indicators O V O Charge Number Circuit Assignment Map Circuit Group Characteristic Indicator Circuit Group Supervision Message Type Indicator F F F F SS7 Pocket Guide 15

17 ISUP Message / Parameter Table (Continued) Message Type ACM ANM BLA BLO CCR CFN CGB CGBA CGU CGUA CON(ITU) COT CPG CRA(ANSI) CQM CQR(ANSI) CRM(ANSI) Parameter Circuit Identification Name Circuit State Indicator V(ANSI) Circuit Validation Response Indicator Closed User Group Interlock Code Collect Call Request Common Language Location Identifier Conference Treatment Indicators O(ITU) O(ITU) O(ITU) Connected Number O(ITU) O(ITU) O(ITU) Connection Request O(ANSI) O(ANSI) Continuity Indicators F Correlation id. Display Information O(ITU) Echo Control Information O(ITU) O(ITU) O(ITU) O(ITU) Egress End of Optional Parameters O O O O(ITU) O Event Information F Event Information Indicators Facility Indicator Facility Information Indicator Forward Call Indicator Forward GVNS Freephone Indicators Generic Address Generic Digits Generic Name Generic Number O(ITU) O(ITU) O(ITU) SS7 Pocket Guide 16

18 ISUP Message / Parameter Table (Continued) Message Type ACM ANM BLA BLO CCR CFN CGB CGBA CGU CGUACON(ITU)COT CPG CRA(ANSI) CQM CQR(ANSI)CRM(ANSI) Parameter Generic Notification Indicator O(ITU) O(ITU) O(ITU) O(ITU) Generic Reference Hop Counter Index Information Indicators O(ANSI) O(ANSI) O(ANSI) Information Request Indicators Jurisdiction Location Number Loop Prevention Indicator MCID Request Indicator MCID Response Indicator MLLP Precedence Message Compatibility Information Message Type F F F F F F F F F F F(ITU) F F F(ANSI) F F(ANSI) F(ANSI) Nature of Connection Indicators F Network Management Controls Network Specific Facilities O(ITU) O(ITU) O(ITU) O(ITU) Network Transport O(ANSI) O(ANSI) O(ANSI) Notification Indicator O(ANSI) O(ANSI) O(ANSI) Operator Services Information Optional Backward Call Indicators O O O O Optional Forward Call Indicators Original Called Number Origination ISC Point Code Originating Line Information Outgoing Trunk Number SIP Pocket Guide 17

19 ISUP Message / Parameter Table (Continued) Message Type ACM ANM BLA BLO CCR CFN CGB CGBA CGU CGUA CON(ITU) COT CPG CRA(ANSI) CQM CQR(ANSI) CRM(ANSI) Parameter Parameter Compatibility Information O(ITU) O(ITU) O O(ITU) Precedence Propagation Delay Counter Range and Status V V V V V V(ANSI) Redirect Capability Redirect Counter Redirecting Number Redirection Information O(ANSI) Redirection Number O(ITU) O O Redirection Number Restriction O(ITU) O(ITU) O(ITU) O(ITU) Remote Operations O O O(ITU) O SCF id Service Activation O O O(ITU) O Service Code Indicator Signaling Point Code Special Processing Request Subsequent Number Suspend/Resume Indicators Transaction Request Transit Network Selection Transmission Medium Requirements Transmission Medium Requirement Prime Transmission Medium Used O O O O UID Action Indicators O(ITU) O(ITU) SS7 Pocket Guide 18

20 ISUP Message / Parameter Table (Continued) Message Type ACM ANM BLA BLO CCR CFN CGB CGBA CGU CGUACON(ITU)COT CPG CRA(ANSI) CQM CQR(ANSI)CRM(ANSI) Parameter UID Capability Indicators User Service Information User Service Information Prime User Teleservice Information User-to-User Indicators O O O O User-to-User Information O O O O Notes SS7 Pocket Guide 19

21 ISUP Message / Parameter Table (Continued) Message Type CVR(ANSI)CVT(ANSI)EXM(ANSI)FAA(ITU) FAC FAR(ITU) FOTFRJ(ITU) GRA GRS IAM INF INR IREQ(ITU) Parameter Access Delivery Information Access Transport O(ITU) O O(ANSI) Automatic Congestion Level Backward Call Indicator Backward GVNS Business Group O(ANSI) O(ANSI) CCSS O(ITU) Call Diversion Information Call Diversion Treatment Indicators O(ITU) Call History Information Call Modification Indicator Call Offeering Treatment Indicators O(ITU) Call Reference O(ITU) O(ITU) O O O O Called IN Number O(ITU) Call Transfer Number O(ITU) Call Transfer Reference Called Party Number V Calling Party Number O O Calling Party Category F O Carrier Identification O(ANSI) Carrier Selection Information O(ANSI) Cause Indicators V(ITU) Charge Number O(ANSI) O(ANSI) Circuit Assignment Map O(ANSI) O(ANSI) O Circuit Group Characteristic Indicator F(ANSI) Circuit Group Supervision Message Type Indicator SS7 Pocket Guide 20

22 ISUP Message / Parameter Table (Continued) Message Type CVR(ANSI) CVT(ANSI) EXM(ANSI) FAA(ITU) FAC FAR(ITU) FOT FRJ(ITU) GRA GRS IAM INF INR IREQ(ITU) Parameter Circuit Identification Name O(ANSI) Circuit State Indicator Circuit Validation Response Indicator F(ANSI) Closed User Group Interlock Code O(ITU) Collect Call Request O(ITU) Common Language Location Identifier O(ANSI) Conference Treatment Indicators O(ITU) Connected Number Connection Request O(ITU) O(ITU) O O O(ANSI) Continuity Indicators Correlation id. O(ITU) Display Information Echo Control Information O(ITU) Egress O(ANSI) End of Optional Parameters O(ANSI) O O(ITU) O O(ITU) O O(ITU) O(ANSI) O(ANSI) O O O O(ITU) Event Information Event Information Indicators Facility Indicator F(ITU) F(ITU) F(ITU) Facility Information Indicator Forward Call Indicator F Forward GVNS O(ITU) Freephone Indicators Generic Address O(ANSI) Generic Digits O Generic Name O(ANSI) SS7 Pocket Guide 21

23 ISUP Message / Parameter Table (Continued) Message Type CVR(ANSI)CVT(ANSI)EXM(ANSI)FAA(ITU) FAC FAR(ITU) FOTFRJ(ITU) GRA GRS IAM INF INR IREQ(ITU) Parameter Generic Notification Indicator O(ITU) O(ITU) Generic Reference O(ITU) Hop Counter O Index Information Indicators F Information Request Indicators O(ANSI) F Jurisdiction O(ANSI) Location Number O(ITU) Loop Prevention Indicator MCID Request Indicator O(ITU) MCID Response Indicator MLLP Precedence O(ITU) Message Compatibility Information O(ITU) O(ITU) Message Type F(ANSI) F(ANSI) F F(ITU) F F(ITU) F F(ITU) F F F F F F(ITU) Nature of Connection Indicators F Network Management Controls O Network Specific Facilities O(ITU) O(ITU) O(ITU) Network Transport O(ANSI) O(ANSI) Notification Indicator Operator Services Information O(ANSI) Optional Backward Call Indicators Optional Forward Call Indicators O(ITU) Original Called Number O Origination ISC Point Code O(ITU) Originating Line Information O(ANSI) O(ANSI) Outgoing Trunk Number O SS7 Pocket Guide 22

24 ISUP Message / Parameter Table (Continued) Message Type CVR(ANSI) CVT(ANSI) EXM(ANSI) FAA(ITU) FAC FAR(ITU) FOT FRJ(ITU) GRA GRS IAM INF INR IREQ(ITU) Parameter Parameter Compatibility Information O(ITU) O(ITU) O(ITU) O(ITU) O(ITU) O(ITU) O(ITU) Precedence O(ANSI) Propagation Delay Counter O(ITU) Range and Status V V Redirect Capability O(ANSI) Redirect Counter O(ANSI) Redirecting Number O O(ANSI) Redirection Information O O(ANSI) Redirection Number Redirection Number Restriction Remote Operations O O SCF id O(ITU) Service Activation O O Service Code Indicator O(ANSI) Signaling Point Code Special Processing Request O(ANSI) Subsequent Number Suspend/Resume Indicators Transaction Request O(ANSI) Transit Network Selection O Transmission Medium Requirements F(ITU) Transmission Medium Requirement Prime O(ITU) Transmission Medium Used UID Action Indicators SS7 Pocket Guide 23

25 ISUP Message / Parameter Table (Continued) Message Type CVR(ANSI)CVT(ANSI)EXM(ANSI)FAA(ITU) FAC FAR(ITU) FOTFRJ(ITU) GRA GRS IAM INF INR IREQ(ITU) Parameter UID Capability Indicators O(ITU) User Service Information O(ITU) V(ANSI) User Service Information Prime O User Teleservice Information O(ITU) User-to-User Indicators O(ITU) O(ITU) O(ITU) O(ITU) User-to-User Information O O(ANSI) Notes SS7 Pocket Guide 24

26 ISUP Message / Parameter Table (Continued) Message Type IRES(ITU) LPA LPR(ITU) NRM(ITU) OLM(ITU) PAM REL RES RLC RSC SAM(ITU) SEG(ITU) SUS UBL UBA UCIC UPA(ITU) UPT(ITU) USR(ITU) Parameter Access Delivery Information O(ITU) Access Transport O(ITU) O O(ITU) O(ITU) Automatic Congestion Level O Backward Call Indicator Backward GVNS Business Group CCSS Call Diversion Information Call Diversion Treatment Indicators Call History Information Call Modification Indicator Call Offeering Treatment Indicators Call Reference O(ANSI) O O Called IN Number Call Transfer Number Call Transfer Reference O(ITU) Called Party Number Calling Party Number O(ITU) Calling Party Category Carrier Identification Carrier Selection Information Cause Indicators V O(ITU) Charge Number O(ANSI) Circuit Assignment Map Circuit Group Characteristic Indicator Circuit Group Supervision Message Type Indicator SS7 Pocket Guide 25

27 ISUP Message / Parameter Table (Continued) Message Type IRES(ITU) LPA LPR(ITU) NRM(ITU) OLM(ITU) PAM REL RES RLC RSC SAM(ITU) SEG(ITU) SUS UBL UBA UCIC UPA(ITU) UPT(ITU) USR(ITU) Parameter Circuit Identification Name Circuit State Indicator Circuit Validation Response Indicator Closed User Group Interlock Code Collect Call Request Common Language Location Identifier Conference Treatment Indicators Connected Number Connection Request Continuity Indicators Correlation id. Display Information O(ITU) Echo Control Information O(ITU) Egress End of Optional Parameters O(ITU) O(ITU) O(ITU) O O O(ITU) O(ITU) O(ITU) O O(ITU) O(ITU) O(ITU) Event Information Event Information Indicators Facility Indicator Facility Information Indicator Forward Call Indicator Forward GVNS Freephone Indicators Generic Address O(ANSI) Generic Digits O(ITU) Generic Name Generic Number O(ITU) O(ITU) SS7 Pocket Guide 26

28 ISUP Message / Parameter Table (Continued) Message Type IRES(ITU) LPA LPR(ITU) NRM(ITU) OLM(ITU) PAM REL RES RLC RSC SAM(ITU) SEG(ITU) SUS UBL UBA UCIC UPA(ITU) UPT(ITU) USR(ITU) Parameter Generic Notification Indicator O(ITU) Generic Reference Hop Counter Index Information Indicators Information Request Indicators Jurisdiction Location Number Loop Prevention Indicator O(ITU) MCID Request Indicator MCID Response Indicator O(ITU) MLLP Precedence Message Compatibility Information O(ITU) O(ITU) O(ITU) O(ITU) Message Type F(ITU) F F(ITU) F(ITU) F(ITU) F F F F F F(ITU) F(ITU) F F F F F(ITU) F(ITU) F(ITU) Nature of Connection Indicators Network Management Controls Network Specific Facilities O(ITU) Network Transport Notification Indicator Operator Services Information Optional Backward Call Indicators Optional Forward Call Indicators Original Called Number Origination ISC Point Code Originating Line Information Outgoing Trunk Number SS7 Pocket Guide 27

29 ISUP Message / Parameter Table (Continued) Message Type IRES(ITU) LPA LPR(ITU) NRM(ITU) OLM(ITU) PAM REL RES RLC RSC SAM(ITU) SEG(ITU) SUS UBL UBA UCIC UPA(ITU) UPT(ITU) USR(ITU) Parameter Parameter Compatibility Information O(ITU) O(ITU) O(ITU) O(ITU) O(ITU) O(ITU) Precedence Propagation Delay Counter Range and Status Redirect Capability Redirect Counter Redirecting Number Redirection Information O(ITU) Redirection Number O Redirection Number Restriction Remote Operations O(ITU) SCF id Service Activation O(ANSI) Service Code Indicator Signaling Point Code O(ITU) Special Processing Request Subsequent Number V(ITU) Suspend/Resume Indicators F F Transaction Request Transit Network Selection Transmission Medium Requirements Transmission Medium Requirement Prime Transmission Medium Used UID Action Indicators SS7 Pocket Guide 28

30 ISUP Message / Parameter Table (Continued) Message Type IRES(ITU) LPA LPR(ITU) NRM(ITU) OLM(ITU) PAM REL RES RLC RSC SAM(ITU) SEG(ITU) SUS UBL UBA UCIC UPA(ITU) UPT(ITU) USR(ITU) Parameter UID Capability Indicators User Service Information User Service Information Prime User Teleservice Information User-to-User Indicators O(ITU) User-to-User Information O O(ITU) V(ITU) Notes 29 SS7 Pocket Guide 29

31 ISUP Call Setup Message Flow (Basic) Origina'ng( Exchange( Des'na'on( Exchange( IAM( ACM( ANM( REL( RLC( TUP Heading Code Abbreviations ACB ACC ACM ADI ANC ANN ANU BLA BLO BSM CBK CCF CCL CCM CCR CFL CGC CHG CLF CNM COT CSM Access Barred Automatic Congestion Control Address Complete Address Incomplete Answer Signal Charge Answer Signal No Charge Answer Signal Unqualified Blocking Acknowledgment Blocking Signal Backward Set-up Message Clear Back Continuity Failure Calling Party Clear Circuit Supervision Message Continuity Check Request Signal Call Failure Signal Circuit Group Congestion Signal Charging Message Clear Forward Signal Circuit Network Management Message Group Continuity Signal Call Supervision Message SS7 Pocket Guide 30

32 TUP Heading Code Abbreviations (Continued) DPN EUM FAM FOT FSM GRA GRM GRQ GRS GSM HBS GHG HGU HUA IAI IAM LOS MBA MBG MBU MPR MUA NNC RAN RLG RSC SAM SAO SBA SBM SEC SGB SGU SSB SST SUA Digital Path Not Provided Extended Unsuccessful Backward Set-up Information Message Forward Address Message Forward Transfer Signal Forward Set-up Message Circuit Group Reset Acknowledgment Message Circuit Group Supervision Messages General Request Message Circuit Group Reset Message General Forward Set-up Information Message Hardware Failure Oriented Group Blocking Acknowledgment Message Hardware Failure Oriented Group Blocking Message Hardware Failure Oriented Group Unblocking Message Hardware Failure Oriented Group Unblocking Acknowledgment Message Initial Address Message with Additional Information Initial Address Message Line Out-of-Service Signal Maintenance Oriented Group Blocking Acknowledgment Message Maintenance Oriented Group Blocking Message Maintenance Oriented Group Unblocking Message Misdialed Trunk Prefix Maintenance Oriented Group Unblocking Acknowledgment Message Network-Network Congestion Signal Reanswer Signal Release Guard Signal Reset Circuit Signal Subsequent Address Message Subsequent Address Message with One Signal Software Generated Group Blocking Acknowledgment Message Successful Backward Set-up Information Message Switching Equipment Congestion Signal Software Generated Group Blocking Message Software Generated Group Unblocking Message Subscriber-Busy Signal (Electrical) Send Special Information Tone Signal Software Generated Group Unblocking Acknowledgment SS7 Pocket Guide 31

33 TUP Heading Code Abbreviations (Continued) TUP TUP Heading Heading Code Code Abbreviations Abbreviations (Continued) (Continued) Sig UBA Unblocking Acknowledgment Signal Sig UBA Unblocking Acknowledgment Signal UBL UBL Unblocking Unblocking Signal Signal UBM UBM Unsuccessful Unsuccessful Backward Set-up Backward Set-up Information Information Message Message UNN UNN Unallocated Unallocated Number Signal Number Signal TUP Message Code Table 32 TUP Message Code Table TUP Message Code Table H1 Message H0 Group FAM IAM 0011 IAI 0100 SAM 0101 SAO H1 Message FSM 0010 GSM COT CCF H0 Group FAM 0001 BSM 0011 IAM IAI GRQ SAM SAO FSM 0010 SBM 0100 GSM ACM COT CHG CCF BSM UBM GRQ SEC CGC NNC ADI CFL SSB UNN LOS SST ACB DPN MPR EUM CSM 0110 ANU ANC ANN CBK CLF RAN FOT CCL SBM 0100 ACM CHG CCM 0111 RLG BLO BLA UBL UBA CCR RSC UBM 0101 SEC CGC NNC ADI CFL SSB UNN LOS SST ACB DPN MPR EUM GRM 1000 MGB MBA MGU MUA HGB HBA HGU HUA GRS GRA SGB SBA SGU SUA CSM 0110 ANU ANC ANN CBK CLF RAN FOT CCL CNM 1010 ACC CCM 0111 RLG BLO BLA UBL UBA CCR RSC GRM 1000 MGB MBA MGU MUA HGB HBA HGU HUA GRS GRA SGB SBA SGU SUA CNM 1010 ACC SS7 Pocket Guide 32 CBA CBD CNM CNP CNS COA COO CSS DLC DLM ECA ECM ECO FCM LFU LIA LID LIN LLI LRI LUA LUN MSG MIM RCP RCR RCT RSM RSP RSR SLTA SLTM TCA TCP TCR TFA TFC TFM TFP TFR TRA TRM TRW UFC UPU

34 SCCP Messages and Protocol Classes SCCP Messages and Message Protocol Type Classes Protocol Class Message Type Code Acronym Protocol Class X X CR Message Connection Message RequestType 0 Message 0 0 0Type 0Code X2 X3 CC Acronym Connection Confirmation X X CREF Connection Request Refused X X RLSD CC Released Connection Confirmation X X RLC CREF Release Connection Complete Refused X X DT1 RLSD Data Released Form X X DT2 RLC Data Release Form Complete X X AK DT1 Data Acknowledgment Form X X X UDT DT2 Unit Data Data Form X X X UDTS AK Unit Data Data Acknowledgment Service X X X ED UDT Expedited Unit Data Data X X X EA UDTS Expedited Unit Data Service Data Acknowledgment X RSR ED Reset Expedited Request Data X RSC EA Reset Expedited Confirmation Data Acknowledgment X X ERR RSR Error Reset Request X X IT RSC Inacivity Reset Confirmation Test X X X X XUDT ERR Extended Error Unit Data X X X X XUDTS IT Extended Inacivity Test Unit Data Service X X LUDT XUDT Long Extended Unit Unit Data Data X X LUDTS XUDTS Long Extended Unit Unit Data Data Service Service X X LUDT Long Unit Data X X LUDTS Long Unit Data Service SCCP Parameter Code Table SCCP Parameter Code Table Parameter Name Parameter Code End of Optional Parameters Destination Local Reference Source Local Reference Called Party Address Calling Party Address Protocol Class Segmenting / reassembly Receive Sequence Number Sequencing / Segmenting Credit Release Cause Return Cause Reset Cause Error Cause Refusal Cause Data Segmentation SCCP Hop Counter Reserved Long Data Intermediate Signaling Network Identifier Notes: Notes 33 SS7 Pocket Guide 33

35 SCCP Management Message Format Data! Calling! Party! Address! Called! Party! Address! Protocol! Class! Message! Type! ! 56! 24! 24! 8! 8! Subsystem! Multiplicity! Indicator! Affected! PC! Affected! SSN! SMG! Format! Identifier! Message Acronym Message Name Message Code SSA Subsystem Allowed SSP Subsystem Prohibited SST Subsystem Status Test SOR Subsystem Out of Service Request SOG Subsystem Out of Service Grant SBR Subsystem Backup Routing SNR Subsystem Normal Routing SRT Subsystem Routing Status Test SCCP Connection Oriented Message Flow EXCHANGE%1% STP% EXCHANGE%2% Step% 1% SSP% CR%SLR%=%14% SSP% CC%DLR%=%14%SLR%=%26% 2% DATA%DLR%=%26%SLR%=%14% 3% Released%DLR%=%26%SLR%=%14% 4% Release%Complete%DLR%=%14%SLR%=%26% SS7 Pocket Guide 34

36 SCCP Message / Parameter Table Messages Parameters CR CC CREF RLSD RLC DT1 DT2 AK ED EA RSR RSC ERR IT UDT XUDT UDTS XUDT LUDT LUDTS Message Type Code M M M M M M M M M M M M M M M M M M M M Destination Local Reference M M M M M M M M M M M M M Source Local Reference M M M M M M M Called Party Address M O O M M M M M M Calling Party Address O M M M M M M Protocol Class M M M M M M Segmenting / Reassembly M Receive Sequence # M Sequencing / Segmenting M M (1) Credit O O M M (1) Release Cause M Return Cause M M M Reset Cause M Error Cause M Data O O O O M M M- M M M M Refusal Cause M End Of Optional Parameters O O O O O O O O SCCP Hop Counter O M M M M Segmentation O O (2) O INSI O O O O Long Data M M 1. Information is ignored if the protocol class is Segmentation parameter must be included by the originating node, if interworking is expected with a MTP network or part of a network that doesn't support SAAL Signaling Links. SS7 Pocket Guide 35

37 SCCP Connectionless Message Flow EXCHANGE%1% STP% EXCHANGE%2% Step% SSP% Unit%Data% SCP% 1% Unit%Data% Unit%Data% 2% Unit%Data% TCAP Message Structure (General) F" CK" SIF" SIO" LI" 8" 16" 8N," N>2" F" I" B" FSN" B" I" B" BSN" F" 8" 2" 6" 1" 7" 1" 7" 8" MTP"2"&"3" Data" Clg." Party" Cld." Party" Protocol" Class" Msg." Type" SCCP" 16"to"2032" Octets" 2"+" Octets" 3"+" Octets" 8" 8" Parameters" RelaHng"to" Specific" Components" Component" PorHon" Dialog" PorHon" TransacHon" PorHon" TCAP" Notes: SS7 Pocket Guide 36

38 TCAP Transaction Portion Parameters Relating Parameters to Component Specific Relating to Portion Component Components Specific Portion Components TCAP TCAP Component Portion Dialog Portion Dialog Portion Transaction Portion Transaction Portion Package Type Identifier Total TCAP Package Length Type Identifier Transaction Total TCAP Id. Identifier Length Transaction Transaction Id. Length Id. Identifier Transaction Transaction Ids. Id. Length Component Transaction Sequence Ids. Identifier Component Component Sequence Sequence Identifier Identifier Length Package Type Identifiers Component Sequence Package Identifier Identifier LengthCode Unidirectional Package Type Identifiers 1 1 1Package 0 0Identifier 0 0 Code 1 Query with Unidirectional Permission Query without Query with Permission Response Query without Permission Conversation Response with Permission Conversation Conversation without with Permission Abort Conversation without Permission Abort Total TCAP Length provides the total length of the TCAP Message Transaction Total TCAP Id. Identifier Length Code provides = the 1 1 total 0 0 length of 1 the TCAP Message Transaction Transaction Id. Length Id. Identifier gives the Code length = of the 1 1 Transaction Ids 1 Transaction Transaction Ids. identify Id. Length an individual gives the Transaction length of the Transaction Ids Component Transaction Sequence Ids. Identifier identify an Code individual = 1 1 Transaction Component Component Sequence Sequence Identifier Identifier Length Code provides = 1 the 1 length of 0 the 0 0 Component Portion Sequence of the Identifier TCAP Message Length provides the length of the Component Portion of the TCAP Message LS O N E O P B Ini Parameters Relating to Specific Components Component Portion Dialog Portion Transaction Portion Component Type Identifier Component Length Component Id. Identifier Component ID Length Component Ids Operations Code Identifier Operations Code Length Operations Code Component Types Component Types Codes Invoke last 1 1 Return Result Last Return Error Reject Invoke Not Last Return Result not Last Component Length provides the length of the individual component Component Id. Identifier Code = Component Id. Length gives the length of the Component Ids Component Ids. identify an individual Component Operations elements are application specific and are not operated on by TCAP They are only transported. Notes: Not N 37 4 SIP Pocket Guide 37

39 Glossary of SS7 Acronyms BIB BSN CCS CIC DPC DUP FCS FIB FSN FISU ISPC ISUP LI LSSU MSU MTP OMAP OPC SANC SCCP SCP SEP SF SI SIF SIO SLC SLS SNM SNT SP SPR SSF SSP STP SU TC Backward Indicator Bit Backward Sequence Number Common Channel Signaling Circuit Identification Code Destination Point Code Data User Part Frame Check Sequence Forward Indicator Bit Forward Sequence Number Fill-In Signal Unit International Signaling Point Code ISDN User Part Length Indicator Link Status Signal Unit Message Signal Unit Message Transfer Part Operations and Maintenance Application Part Origination Point Code Signaling Area Network Code Signaling Connection Control Part Service Control Point Signaling End Point Status Field Service Indicator Signaling Information Field Service Information Octet Signaling Link Code Signaling Link Selection Signaling Network Management Signaling Network Testing Signaling Point Signaling Point with SCCP Relay Function Sub-Service Field Service Switching Point Signal Transfer Point Signal Unit Transaction Capabilities References Telcordia Technologies Specification of Signaling System Number 7 GR-246-CORE, Issue 8, December 2003 ITU Recommendations Q.700 Q.766 Although information contained in this document resembles specifications by national or international standards bodies, nothing contained within this document is either warranted or endorsed by said standards bodies. While every effort has been taken to ensure the accuracy of this material, errors may exist and materials may become obsolete by more recent additions of specifications. No development of actual product should be undertaken without referring to the ANSI, ITU, ETSI, or IETC specifications. SS7 Pocket Guide 38

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