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www.dialogic.com Dialogic® SS7 Protocols ISUP Programmer's Manual

Section 1 About this Publication 10 1.3 Related Documentation [1] ITU-T recommendation Q.730, ISDN Supplementary services [2] ITU-T recommendation

Section 6 Interface to Application ANSI operation In ANSI, the Loop Back Acknowledgement request (LPA) message is used to indicate that the continui

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 Timer expiry during continuity test call Timers T27 (waiting for CCR) and T36 (waiting

Section 6 Interface to Application 102 The application must run all the timers associated with the continuity check and perform the appropriate acti

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 Successful continuity test call To initiate a continuity test call, the application nee

Section 6 Interface to Application Unsuccessful continuity test call The continuity test is initiated as in the previous example. If the continuity

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 Successful continuity check during call set up After a continuity check has succeeded d

Section 6 Interface to Application Unsuccessful continuity check during call set up Following an unsuccessful continuity check during normal call se

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 Call collision A continuity test call may be initiated at both ends of a circuit simult

Section 6 Interface to Application Reset circuit received during a continuity test call A reset circuit message may be received during an outgoing c

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 109 6.8.6 Message Segmentation If the ISUP module receives a message with the segmentat

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 11 [23] ITU-T Recommendation Q.1902.2 (2001), Bearer independent Call Control protocol

Section 6 Interface to Application 110 Procedure When the autoblocking feature is activated, the ISUP module will periodically send a Heartbeat mess

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 111 6.8.8 BICC Application Transport If the ISUP module receives a message containing

Section 6 Interface to Application 112

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 113 7 Management Interface 7.1 Introduction The management interface allows the user to

Section 7 Management Interface 114 7.2 Circuit Group Supervision Control Request This message is issued by system management to initiate a circuit

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 115 Value Name Function 3 M-Unblock Maintenance unblock circuit(s) 4 M-Stop Abort

Section 7 Management Interface 116 ptype The type of management primitive taken from the following table: Value Name Function 0 Reset Reset circ

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 117 Parameters gid The group identifier for the Circuit Group. ptype The type of mana

Section 7 Management Interface 118 Parameter Area offset 0, size 1: ptype Management primitive type. offset 1, size 1: reserved Set to zero offs

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 119 ISUP Response method By returning the message to the sender type 0x370d SUCCESS I

Section 1 About this Publication 12

Section 7 Management Interface 120 Parameters congestion_status The congestion status of the indicated remote signaling point (remote user) encoded

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 121 8 Non-Primitive Interface In addition to the primitives defined for the User to ISU

Section 8 Non-Primitive Interface 122 Parameter Area offset 0, size 2 options Run time options offset 2, size : module_id Used for partner module

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 123 Parameters optionsRun-time options assigned according to the following table: Bit N

Section 8 Non-Primitive Interface 124 Bit Number Mnemonic Description 10 ISPF_RPT_UERR If set to 1, unexpected messages, unexpected parameters a

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 125 sccp_id Reserved for future use, this should always be set to zero. maint_id The d

Section 8 Non-Primitive Interface 126 8.2 Configure Circuit Group Request This message is used to assign circuits to a circuit group and to configu

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 127 offset 36, size 1: variant Specific variant of ISUP selected for the group. offs

Section 8 Non-Primitive Interface 128 options The options field allows various run-time options as shown in the following table to be selected for

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 129 Bit Number Mnemonic Description 11 ISPGOP_COM If set to 1, the user application

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 13 2 General Description 2.1 Module Overview The ISUP module implements full ISDN User

Section 8 Non-Primitive Interface 130 Bit Number Mnemonic Description 4 ISPXGOP_ANSI If set to 1, ANSI (T1.113 - 1992) operation is enabled. Ty

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 131 Bit Number Mnemonic Description 12 ISPXGOP_CAUSE_767 If set to 1, the format an

Section 8 Non-Primitive Interface 132 sccp_id Reserved for future use, this should always be set to zero. maint_id The module_id of the module for

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 133 Bit Number Mnemonic Description 4 ISPX1GOP_T39 If set to 1, this will cause tim

Section 8 Non-Primitive Interface 134 Bit Number Mnemonic Description 10 Reserved for future use – set to zero.11 ISPX1GOP_SET_LOC Used in conj

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 135 variant This field allows different specific variants of ISUP to be selected for a

Section 8 Non-Primitive Interface 136 cic_msb This field contains the two most significant bytes of the base_cic of the first circuit of the group

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 137 Parameter Area offset 0, size 1: version Version of configure timers message off

Section 8 Non-Primitive Interface 138 Parameter Area offset 70, size 2: t35 offset 72, size 2: t36 offset 74, size 2: t37 offset 76, size 2

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 139 Timer ISUP Default (seconds) BICC Default (seconds) Description before sending ACM

Section 2 General Description 14 Depending on the platform that ISUP is running, some or all of these configuration messages may be generated based

Section 8 Non-Primitive Interface 140 Timer ISUP Default (seconds) BICC Default (seconds) Description t38 150 150 Waiting for RES t39 10 0 Waiti

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 141 8.5 Variant Initialisation This message is used to specify a custom variant to allo

Section 8 Non-Primitive Interface 142 8.6 Custom Parameter Configuration This message allows proprietary parameters to be added and removed from an

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 143 operation This allows a proprietary parameter to be added or deleted from a partic

Section 8 Non-Primitive Interface 144 Parameter Area offset 0, size 1: mngt_id Management module id. offset 1, size 1: mngt_inst Management module

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 145 8.8 Read RAM Request This message is provided solely for diagnostic purposes to req

Section 8 Non-Primitive Interface 146 ISUP Response method by sending a MSG type 0x2705 status SUCCESS 8.10 Read Circuit Request This message is

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 147 Read Request to ISUP status 0x00 err_info 0x00 len 28 offset 0, size 2: type C

Section 8 Non-Primitive Interface 148 Parameters gid The group identifier for the Circuit Group. cic_mask A 32-bit mask indicating to which of the

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 149 The second octet (the least significant octet) gives the internal circuit state val

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 15 The Custom Parameter Configuration message should be sent when a proprietary paramet

Section 8 Non-Primitive Interface 150 Value State Outgoing call states: 0x86 outgoing call – waiting for RLC 0x87 outgoing call – waiting for Rel

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 151 Parameters gid The group identifier for the Circuit Group. 8.14 Read Circuit Grou

Section 8 Non-Primitive Interface 152 gid mask A mask of configured circuit groups where a bit’s position corresponds to a circuit group id offset

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 153 8.16 Send Software Event Mask Request Sends a mask indicating which software event

Section 8 Non-Primitive Interface 154 8.17 Trace Mask Configuration Request Set the ISUP module's event masks for tracing (input and output) m

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 155 23 22 21 20 19 18 17 16 0 0 0 0 0 0 0 0 15 14 13 12 11 10 9 8 0 0 0 0 0 0 0 0 7

Section 8 Non-Primitive Interface 156 • CGSC_REQ- Circuit Group Supervision Control Request • OVLD_REQ- Overload Request non_prim_mask The non-pr

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 157 8.18 Send Selective Trace Event Mask Request This message is issued by the ISUP mo

Section 8 Non-Primitive Interface 158 8.19 Maintenance Event Indication This message is issued by the ISUP module to notify system maintenance of v

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 159 The Maintenance Event Code contained in the status field of the message indicates t

Section 2 General Description 16

Section 8 Non-Primitive Interface 160 Status Data Mnemonic Description 21 0x15 cic_mask CCm_MGBR_Unblocking Circuits remotely maintenance unblo

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 161 Status Data Mnemonic Description 42 0x2a cic_mask CCm_MGBS_Bad_CGBA Bad or une

Section 8 Non-Primitive Interface 162 Status Data Mnemonic Description 60 0x3c cic_mask CCm_HGBS_Unblocking Circuits locally hardware unblocked

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 163 The Software Event Code contained in the status field of the message indicates the

Section 8 Non-Primitive Interface 164 Parameter Status Mnemonic id 1 2 Description 16 0x10 ISPe_APM_LOW 0 0 0 A message has been received f

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 165 8.21 Management Event Indication This message is issued by the ISUP module to notif

Section 8 Non-Primitive Interface 166 8.22 Trace Event Indication The ISUP module may be configured to trace to management most primitives issued o

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 167 8.23 Selective Trace Event Indication This message is issued by the ISUP module op

Section 8 Non-Primitive Interface 168 The Reason for trace contained in the status field of the message indicates the type of event. Possible value

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 169 8.24 Heartbeat Request/Indication This message is issued by the ISUP module to dete

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 17 3 Internal Data Structures 3.1 Introduction This chapter describes the internal dat

Section 8 Non-Primitive Interface 170 flags Sets by the ISUP module, or by the user application to indicate or request information respectively. Bi

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 171 Appendix A: ISUP National Variants This section will provide message and parameter

Appendix A: ISUP National Variants 172 A.2 UK ISUP UK ISUP Specification: PNO-ISC Specification Number 007 ISDN User Part (ISUP)Configuration and op

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 173 Parameter Value UK ISUP API Length Parameter Name Hex Dec Hex Dec Mandatory/ Op

Appendix A: ISUP National Variants 174 Parameter Value Japan (TTC) ISUP API Length Parameter Name Hex Dec Hex Dec Mandatory/ Optional Parameter Min

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 175 Parameter Value Nortel RLT (ANSI) ISUP API Length Parameter Name Hex Dec Hex De

Appendix A: ISUP National Variants 176 A.5 Italian ISUP Italian ISUP Specification: Specifica Tecnica N.763Configuration and options In order to use t

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 177 Parameters When this variant is selected, the following Italian ISUP specific param

Appendix A: ISUP National Variants 178 * Refer to Section 6.5 on page 26 and Section 6.6 on page 54 for details. Parameters When this variant is

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 179 Messages Messages specific to China ISUP: Message Value China ISUP API Message Na

Section 3 Internal Data Structures 18

Appendix A: ISUP National Variants 180 A.8 Finnish ISUP Finnish ISUP Specification: SFS 5779 Signalling in the public switched telephone network (PSTN

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 181 • If the value of the OPC is greater than the DPC, priority (or control) should be

Appendix A: ISUP National Variants 182

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 183 Appendix B: Messages Currently Supported by the ISUP Module B.1 ITU-T Messages Mes

Appendix B: Messages Currently Supported by the ISUP Module 184 Message Type Q.763 (1992 and later) Message expected by ISUP module Message generated

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 185 Parameter name Code (binary) Code (decimal) Parameter supported by ISUP module C

Appendix B: Messages Currently Supported by the ISUP Module 186 Parameter name Code (binary) Code (decimal) Parameter supported by ISUP module Forw

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 187 Parameter name Code (binary) Code (decimal) Parameter supported by ISUP module P

Appendix B: Messages Currently Supported by the ISUP Module 188 B.3 ANSI T1.113 Messages Message Type ANSI T1.113.3 Message expected by ISUP module

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 189 Message Type ANSI T1.113.3 Message expected by ISUP module Message generated by IS

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 19 4 Interface to System Services 4.1 System Functions In addition to the primitive in

Appendix B: Messages Currently Supported by the ISUP Module 190 Parameter name Code (binary) Code (decimal) Parameter supported by ISUP module Gen

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 191 Appendix C: Message Type Table The following table lists, by message type, all the

Appendix C: Message Type Table 192 Message Type Mnemonic Description See page Confirmation Message 0x7702 ISP_MSG_CNF_TIM Configure Timers Request

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 193 Appendix D: ISUP Configuration Option Settings This section tabulates suggested cir

Appendix D: ISUP Configuration Option Settings 194 Variant Bit Option ANSI ETSI ITU Blue Book ITU Q.767 13 Reserved 0 0 0 0 0 14 ISPGOP_TCCR

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 195 More Extended Options Variant Bit Option ANSI ETSI ITU Blue Book ITU Q.767 0 I

Appendix D: ISUP Configuration Option Settings 196

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 197 Appendix E: ISUP Repeat Parameters This section describes all supported parameters

Appendix E: ISUP Repeat Parameters 198

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 199 Appendix F: Timer Services The notion of time in the ISUP module is based on a peri

2 Copyright© 2003-2008 Dialogic Corporation. All Rights Reserved. You may not reproduce this document in whole or in part without permission in writi

Section 4 Interface to System Services 20

Appendix F: Timer Services 200 F.1 Timer Expiry Periodic timer tick message issued by the timer module. Message Header structure MSG type TM_EXP (0xc0

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 201 Index A Abbreviations in this manual, 9 Alerting Indication, 56 Alerting Request, 2

Index 202 J Japan (TTC) ISUP, 173 K Keep Time, 199 L Local Overload Request, 118 Loop Back Acknowledgement Indication, 66 Loop Back Acknowledgement Re

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 203 V Variant Initialisation, 141

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 21 5 Interface to MTP The ISUP module interfaces with the Message Transfer Part (MTP)

Section 5 Interface to MTP 22

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 23 6 Interface to Application 6.1 Introduction All primitives at the application inter

Section 6 Interface to Application 24 call_ref is used to identify the circuit or call to which the message refers. Currently, when 32768 circuits

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 6.3 Application Message - User Data Format The format of user data in transmit request

Section 6 Interface to Application 26 6.4 Parameter Extension Mechanism The CCPN_parameter type value 128 (0x80) is used as an extension parameter i

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 27 Value Primitive Message type Dec Hex Use INF 4 0x04 Sends additional call infor

Section 6 Interface to Application 28 6.5.1 Alerting Request This primitive is used by the application to indicate that the called subscriber's

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 29 • Network specific facility • Parameter compatibility information • Redirection n

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 3 Contents Revision History...

Section 6 Interface to Application 30 • Access delivery information • Application transport • Backward GVNS • Call diversion information • Call

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 31 Optional parameters • Message compatibility information • Parameter compatibility

Section 6 Interface to Application 32 6.5.5 Collection Charging Request This primitive is used by the application after alerting to provide the num

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 33 6.5.8 End-to-End Message Request This primitive is used by the application for end-

Section 6 Interface to Application 34 Mandatory parameters • Facility indicator Optional parameters • Call reference The following optional parame

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 35 6.5.11 Facility Response This message is used by the application to accept or reject

Section 6 Interface to Application 36 6.5.12 Forward Transfer Request This message is used by the application to send a Forward Transfer message to

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 37 Mandatory parameters None Optional parameters • MCID response indicators • Message

Section 6 Interface to Application 38 Mandatory parameters • Information indicators Optional parameters • Calling party category • Calling party

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 39 6.5.17 Loop Prevention Request Note: This message is only applicable to ITU-T oper

Contents 4 6.5.21 Proceeding request ...41 6.5.22 Pr

Section 6 Interface to Application 40 6.5.19 Overload Request Note: This message is only applicable to ITU-T operation This primitive is used by th

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 41 6.5.21 Proceeding request This primitive is used by the application to indicate that

Section 6 Interface to Application 42 The following optional parameters are supported in ANSI mode only: • Business group • Generic digits • Info

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 43 • Call history information • Call transfer number • Conference treatment indicato

Section 6 Interface to Application 44 Optional parameters The following parameters are supported in ITU-T mode only • Cause indicators 6.5.24 Rele

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 45 • Redirection number • Redirection number restriction indicator • Remote operati

Section 6 Interface to Application 46 Optional parameters • Suspend/resume indicators Defaults to 0x00 if not supplied, i.e. ISDN Subscriber Initia

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 47 Optional parameters • Access transport • Calling party's category Defaults to

Section 6 Interface to Application 48 • Circuit assignment map • Closed user group interlock code • Collect call request • Conference treatm

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 49 The following optional parameters are supported in ANSI mode only: • Business group

DialogicTP®TP SS7 Protocols ISUP Programmer's Manual Issue 15 5 6.8.6 Message Segmentation ...

Section 6 Interface to Application 50 • Backward call indicators Defaults to 0x1416 if not supplied , i.e. Subscriber Free, Ordinary Subscriber, Ch

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 51 • Optional backward call indicators • Remote operations • Service activation • T

Section 6 Interface to Application 52 6.5.30 Subsequent Directory Number Request This primitive is used by the application to convey subsequent dir

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 53 6.5.32 Unrecognised Message Request Note: This message is only applicable to ITU-

Section 6 Interface to Application 54 6.6 Application Messages from ISUP The following table lists all application messages (message type ISP_MSG_R

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 55 Value Primitive Message type Dec Hex Use Network resource management indication NR

Section 6 Interface to Application 56 6.6.1 Alerting Indication This primitive is used by ISUP to indicate that the called subscriber's phone i

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 57 • UID action indicators • Access delivery information • Application transport •

Section 6 Interface to Application 58 • User to user information The following optional parameters are supported in ITU-T mode only: • Acce

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 59 6.6.2 Application Transport Indication Note: This message is only applicable to IT

Contents 6 Appendix C: Message Type Table...191 Appendix D: ISUP Configurat

Section 6 Interface to Application 60 6.6.4 Circuit Seized Indication This primitive is used by ISUP to indicate that the circuit has been seized f

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 61 6.6.7 Continuity Indication This primitive is used by ISUP to convey information abo

Section 6 Interface to Application 62 6.6.10 Facility Indication This message is issued by ISUP to indicate that the remote party is either requesti

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 63 The following optional parameters are supported in ITU-T mode only: • Access transp

Section 6 Interface to Application 64 The following optional parameters are supported in ANSI mode only: • Called party number • Calling party num

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 65 6.6.14 Identification Confirmation Note: This message is only applicable to ITU-T o

Section 6 Interface to Application 66 Additional call information This primitive is used by ISUP to indicate additional call information (other than

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 67 Mandatory parameters None Optional parameters None 6.6.17 Loop Prevention Indicatio

Section 6 Interface to Application 68 6.6.19 Overload Indication Note: This message is only applicable to ITU-T operation. This primitive is used b

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 69 6.6.21 Proceeding Indication This primitive is used by ISUP to indicate that the des

DialogicTP®TP SS7 Protocols ISUP Programmer's Manual Issue 15 7 Revision History Issue Date Description 15 February 2008 Minor alterations to

Section 6 Interface to Application 70 • Notification indicator • Redirection information 6.6.22 Progress Indication This primitive is used to con

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 71 • Information indicators • Network transport • Notification indicator This par

Section 6 Interface to Application 72 Optional parameters • Access transport • Automatic congestion level • Generic number (address) This paramet

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 73 The following optional parameters are supported in ANSI mode: • Network terminatio

Section 6 Interface to Application 74 6.6.28 Setup Confirmation This primitive is used by ISUP to indicate that an outgoing call has been answered.

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 75 • User to user indicators The response to a previously issued user to user suppleme

Section 6 Interface to Application 76 • Redirection number restriction indicator The following optional parameters are supported in ANSI mode:

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 77 • Service activation • Transit network selection • Redirecting number • User ser

Section 6 Interface to Application 78 • UID capability indicators • User teleservice information The following optional parameters are supp

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 79 6.6.31 Suspend Indication This message is used by ISUP to indicate that a currently

Revision History 8 Issue Date Description 8 May 1997 A circuit group may now be ended without having to restart the module. This allows the applic

Section 6 Interface to Application 80 6.7 Parameter Definitions The following section defines the parameters that are used in messages between the l

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 81 Value Length Parameter Name Hex Dec Definition/Reference Min Max Notes Called dir

Section 6 Interface to Application 82 Value Length Parameter Name Hex Dec Definition/Reference Min Max Notes Continuity indicators 0x10 16 Q.7

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 83 Value Length Parameter Name Hex Dec Definition/Reference Min Max Notes MLPP prece

Section 6 Interface to Application 84 Value Length Parameter Name Hex Dec Definition/Reference Min Max Notes Redirecting number 0x0b 11 Q.763

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 85 Value Length Parameter Name Hex Dec Definition/Reference Min Max Notes User servi

Section 6 Interface to Application 86 6.7.1 Called Party Number The format of the called party number is defined in ITU-T Q.763 Section 3.9. Due t

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 87 6.7.3 Cause Indicators The format of the cause indicators parameter is defined in IT

Section 6 Interface to Application 88 6.7.4 Custom Parameter The custom parameter is not defined by ITU-T or ANSI. It is a proprietary parameter whi

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 89 The first byte of the data field contains the message type (this is the message type

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 9 About this Publication 1.1 Introduction The ISUP module is a software implementation

Section 6 Interface to Application 90 6.7.8 Unrecognised Parameter The Unrecognised parameter is used to convey parameter types that are proprietary

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 91 Note: All new user applications should make use of the Application Controlled Relea

Section 6 Interface to Application External Call collision This is when the call collision occurs between the ISUP module and the network i.e. the n

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 Figure 11. Example of an External Call Collision where this end of the Circuit is Slav

Section 6 Interface to Application 94 6.8.3 Hop Counter Procedure The ITU-T Recommendation Q.764 (09/97) specifies a hop counter procedure which is

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 95 6.8.4 Continuity Testing Incoming circuits There are two situations where continuity

Section 6 Interface to Application Successful continuity test call When a Continuity check request (CCR) message is received, a Circuit seized indic

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 Unsuccessful continuity test call When the CCR message is received, a Circuit seized in

Section 6 Interface to Application Successful continuity check during call set up A COT message is received from the network, indicating that the co

Dialogic® SS7 Protocols ISUP Programmer's Manual Issue 15 Unsuccessful continuity check during call set up When the COT message is received from