Token	ANSI88	ANSI92	ANSI95	ITU Blue	ITU White	Q.767
`infoElmts`	*	*	*	*	*	*

Token	ANSI 88	ANSI 92	ANSI 95	ITU Blue	ITU White	Q. 767	ITU 1997	ETSI V2	ETSI V3
`termAccInd`					*		*	*	*
`spare1`					C-G		C-G	C-G	C-G

Version

Appendix A

Event, IE, and Token Reference

: Introduction
: Usage Information
: Tokens
: Information Elements (IEs)
: Information Elements for Japan/NTT Variant
: Events

Introduction

This section provides the detailed encoding reference for events (messages) passed between the user application and the SS7 ISUP service layer, and the information elements (IEs) and tokens which comprise the events.

Usage Information

Data Structures

C-language definitions for all token structures, IE structures, event structures, and associated constants are provided in the file isupmsgs.h. The IEs to be used for the generation of specific ISUP messages for each switch type are specified in Appendix B.

Coding of Presence Indicators

Each token within an information element, and each information element within an event, contains a presence indicator to specify whether or not to include it in an outgoing event, or whether or not it was received in an incoming event.
Presence indicators should be coded with the following values (definitions included in isupmsgs.h): #define NOT_PRESENT 0 /* field not present in incoming msg or * not to be populated in outgoing msg */ #define PRESENT 1 /* field is present in incoming msg or * should be *included in outgoing msg */

Tokens

The following sections specify the format of tokens, or fields, found within the information elements that make up the SS7 ISUP events passed between the application and the ISUP layer.

U8 Token

The U8 token is used to represent a quantity that can be specified in 8 bits. typedef struct tknU8 /* token U8 */ { U8 pres; /* present flag */ U8 val; /* value */ U16 spare1; /* for alignment */ } TknU8;

U16 Token

The U16 token is used to represent a quantity that can be specified in 16 bits. typedef struct tknU16 /* token U16 */ { U8 pres; /* present flag */ U8 spare1; /* for alignment */ U16 val; /* value */ } TknU16;

U32 Token

The U32 token is used to represent 32-bit quantities. typedef struct tknU32 /* token U32 */ { U8 pres; /* present flag */ U8 spare1; /* for alignment */ U16 spare2; /* for alignment */ U32 val; /* value */ } TknU32;

String Token

The String token is used to represent a variable length sequence of octets such as an address (sequence of digits). typedef struct tknStr /* token string */ { U8 pres; /* present flag */ U8 len; /* length */ U16 spare1; /* for alignment */ U8 val[(MF_SIZE_TKNSTR + 3) & 0xffc]; /* string value */ } TknStr;

Extended Token

The extended token consists of the presence indicator for the entire token, a type field, a length field, and the data itself. This token exists only in the extended element structure. typedef struct _siTknExt /* token string */ { U8 pres; /* present flag */ U8 type; /* type value */ U8 len; /* length */ U8 spare1; /* for alignment */ U8 val[MF_SIZE_EXTTKN]; } TknExt;
The type, len, and val fields are encoded inside the ISUP packet after all known optional parameters.

Information Elements (IEs)

The following subsections specify the layout of each of the possible information elements (IEs) that comprise the events passed between the application and the SS7 ISUP layer implementation.
A table follows each information element (IE) description, including the fields contained within the respective structure and a list of protocol variants. An asterisk (*) indicates the token is applicable for the specified protocol variant. In the case of spare and reserved tokens, the bit positions represented by these tokens are indicated.

Element Header

Each information element contains an element header as the first field in the structure. The element header currently consists of just the presence indicator for the entire IE. typedef struct elmtHdr /* element header */ { Bool pres /* present */ U8 spare1; /* for alignment */ U16 spare2; /* for alignment */ } ElmtHdr;

Extended Element

Extended elements allow an application to send data tokens (information elements) that are proprietary and/or unknown to the SS7 ISUP solution. These extended elements will be passed as optional parameters in message types that already allow optional parameters in them. For example, the IAM message allows for optional parameters, so any elements in the extended element fields will be encoded into the message. The RSC (reset circuit) message does not allow for optional parameters, so no extended elements can be passed in that event structure. Passing extended elements for a message that does not support optional parameters will cause the message transmission to fail.
On the receive side of applications, the same event structures with extended elements are returned by ISUPRetrieveMessage. The application can choose to ignore the extended elements.
Note: In order to transmit or receive extended elements, the ISUP task must be configured to allow extended elements.
The extended element consists of the standard element header and an extended token. typedef struct siElementExt { ElmtHdr eh; /* element header */ TknExt tknExt; /* extended information */ } SiElementExt;

Access Delivery IE

This IE is sent in the backward direction to indicate that a SETUP message was sent to the destination address. typedef struct _accDelInfo /* Access delivery information */ { ElmtHdr eh; /* element header */ TknU8 delInd; /* delivery indicator */ } SiAccDelInfo;
The delInd field is encoded to one of the following values: 0x00 a SETUP message was generated 0x01 no SETUP message was generated Token ANSI88 ANSI92 ANSI95 ITU Blue ITU White Q.767 delInd * reserved B-H

Access Transport IE

The access transport IE contains one or more Q.931 information elements passed through transparently to the far exchange and/or CPE. The Q.931 IEs contained in the infoElmts field must be encoded/decoded by the application as specified in Q.931. See ANSI T1.607 and/or ITU-T Q.763 for more details. typedef struct _accTrnspt /* Access transport */ { ElmtHdr eh; /* element header */ TknStr infoElmts; /* Information elements */ } SiAccTrnspt; Token ANSI88 ANSI92 ANSI95 ITU Blue ITU White Q.767 infoElmts * * * * * *

Application Transport Parameter IE (ITU97, ETSI V3)

To support this information element, use the extended element feature described in "Extended Element" on page 177.

Automatic Congestion Level IE

This IE indicates that a particular level of congestion exists at the sending exchange. typedef struct _autoCongLvl /* Automatic Congestion Level */ { ElmtHdr eh; /* element header */ TknU8 auCongLvl; /* auto congestion level */ } SiAutoCongLvl;
The auCongLvl field is coded to one of the following values: #define ACLVL_LVL1 0x01 #define ACLVL_LVL2 0x02 #define ACLVL_LVL3 0x03 Token ANSI88 ANSI92 ANSI95 ITU Blue ITU White Q.767 auCongLvl * * * * *

Token	ANSI88	ANSI92	ANSI95	ITU Blue	ITU White	Q.767
`auCongLvl`		*	*	*	*	*

Backward Call Indicators IE

The backward call indicators IE contains information sent in the backwards direction to allow the originating exchange to complete processing of a call. typedef struct _bckCalInd /* Backward Call Indicators */ { ElmtHdr eh; /* element header */ TknU8 chrgInd; /* Charge Indicator */ TknU8 cadPtyStatInd; /* called party status ind. */ TknU8 cadPtyCatInd; /* called party category ind */ TknU8 end2EndMethInd; /* end to end method indcatr */ TknU8 intInd; /* interworking indicator */ TKnU8 segInd; /* simple segmentation indicator */ TknU8 end2EndInfoInd; /* end to end info indicator */ TknU8 isdnUsrPrtInd; /* ISDN User Part indicator */ TknU8 holdInd; /* holding indicator */ TknU8 isdnAccInd; /* ISDN access indicator */ TknU8 echoCtrlDevInd; /* echo control device ind. */ TknU8 sccpMethInd; /* SCCP method indicator */ TknU8 spare; /* spare bits */ } SiBckCalInd;
The fields in the SiBckCallInd structure are coded as follows:
chrgInd #define CHRG_NOIND 0x00 #define CHRG_NOCHRG 0x01 #define CHRG_CHRG 0x02
cadPtyStatInd #define CADSTAT_NOIND 0x00 #define CADSTAT_SUBFREE 0x01 #define CADSTAT_CONNFREE 0x02 #define CADSTAT_DELAY 0x03
cadPtyCatInd #define CADCAT_NOIND 0x00 #define CADCAT_ORDSUBS 0x01 #define CADCAT_PAYPHONE 0x02
end2EndMethInd #define E2EMTH_NOMETH 0x00 #define E2EMTH_PASSALNG 0x01 #define E2EMTH_SCCPMTH 0x02 #define E2EMTH_BOTH 0x03
intInd #define INTIND_NOINTW 0x00 #define INTIND_INTW 0x01
segInd #define SEGIND_NOIND 0x00 #define SEGIND_INFO 0x01
end2EndInfoInd #define E2EINF_NOINFO 0x00 #define E2EINF_INFO 0x01
isdnUsrPrtInd #define ISUP_NOTUSED 0x00 #define ISUP_USED 0x01
holdInd #define HOLD_NOTREQD 0x00 #define HOLD_REQD 0x01
isdnAccInd #define ISDNACC_NONISDN 0x00 #define ISDNACC_ISDN 0x01
echoCtrlDevInd #define ECHOCDEV_NOTINCL 0x00 #define ECHOCDEV_INCL 0x01
sccpMethInd #define SCCPMTH_NOIND 0x00 #define SCCPMTH_CONLESS 0x01 #define SCCPMTH_CONORNTD 0x02 #define SCCPMTH_BOTH 0x03 Token ANSI88 ANSI92 ANSI95 ITU Blue ITU White Q.767 chrgInd * * * * * * cadPtyStatInd * * * * * * cadPtyCatInd * * * * * * end2EndMethInd * * * * * * intInd * * * * * * segInd * * end2EndInfoInd * * * * isdnUsrPrtInd * * * * * * holdInd * * * * * * isdnAccInd * * * * * * echoCtrlDevInd * * * * * sccpMethInd * * * * * spare N-P

Token	ANSI88	ANSI92	ANSI95	ITU Blue	ITU White	Q.767
`chrgInd`	*	*	*	*	*	*
`cadPtyStatInd`	*	*	*	*	*	*
`cadPtyCatInd`	*	*	*	*	*	*
`end2EndMethInd`	*	*	*	*	*	*
`intInd`	*	*	*	*	*	*
`segInd`		*	*
`end2EndInfoInd`	*			*	*	*
`isdnUsrPrtInd`	*	*	*	*	*	*
`holdInd`	*	*	*	*	*	*
`isdnAccInd`	*	*	*	*	*	*
`echoCtrlDevInd`		*	*	*	*	*
`sccpMethInd`		*	*	*	*	*
`spare`	N-P

Backward GVNS IE

typedef struct_bckGVNS
{
    ElmtHdr eh;             /* element header               */
    TknU8   termAccInd;     /* Terminating access indicator */
    TknU8   spare1;         /* bits c-g                     */
}SiBckGVNS;

The termAccInd field is coded to one of the following values:

#define TERM_ACC_NO_INFO      0
#define TERM_ACC_DEDICATED    1
#define TERM_ACC_SWITCHED     2
#define TERM_ACC_SPARE        3 



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Business Group IE

This IE identifies the properties of a group of subscriber lines which belong to a common subscriber, such as a Centrex group. typedef struct _businessGrp /* Business Group */ { ElmtHdr eh; /* element header */ TknU8 partySel; /* party selector */ TknU8 linePrivInfInd; /* line privileges info ident. */ TknU8 BGIDident; /* BGID identifier */ TknU8 attendStat; /* attendant status */ TknU32 busiGrpIdent; /* business group ident. */ TknU16 subGrpIdent; /* sub-group identifier */ TknU8 linePriv; /* line privileges */ } SiBusinessGrp;
Fields in the SiBusinessGrp structure are encoded as follows:
partySel #define PRTY_NOIND 0x00 #define PRTY_CGPTYNUM 0x01 #define PRTY_CDPTYNUM 0x02 #define PRTY_CONNDPTYNUM 0x03 #define PRTY_REDIRGNUM 0x04 #define PRTY_ORIGCALLNUM 0x05
linePrivInfInd #define PRIV_FIXED 0x00 #define PRIV_CUSTDEF 0x01
BGIDident #define BGID_MULTILOC 0x00 #define BGID_INTERNET 0x01
attendStat #define ATTEN_NOIND 0x00 #define ATTEN_ATTENDLINE 0x01
busiGrpIdent Business group identifier (only least significant 24 bits are used). Value zero is "no indication", value one is "public network", all other values are network dependent.
subGrpIdent Subgroup identifier (16 bits). Value zero is "no subgroups"; all other values represent a subgroup number.
linePriv #define LP_RESTRICT 0x00 #define LP_SEMIRESTRICT 0x01 #define LP_FULLRESTRICT 0x02 #define LP_FULLRESTRICT_INSWTCH 0x03 #define LP_DENIED 0x04 Token ANSI88 ANSI92 ANSI95 ITU Blue ITU White Q.767 partySel * * linePrivInfInd * * BGIDident * * attendStat * * spare * * busiGrpIdent * * subGrpIdent * * linePriv * *

Call Diversion IE

This IE is sent in the backward direction to notify the originating exchange of the redirecting reason and the notification subscription options of the redirecting party. typedef struct _cllDivr /* call Diversion information */ { ElmtHdr eh; /* element header */ TknU8 notSuscr; /* Notification subscription */ TknU8 redirRsn; /* redirection reason */ TknU8 spare; /* spare bits */ } SiCllDiverInfo;
The fields in the SiCllDiverInfo structure are encoded as follows:
notSuscr #define PRES_UNKNOWN 0x00 #define PRES_NOTALLOW 0x01 #define PRES_ALLOWWREDNUM 0x02 #define PRES_ALLOW 0x03
redirRsn #define REAS_UNKNWN 0x00 #define REAS_USRBUSY 0x01 #define REAS_NOREPLY 0x02 #define REAS_UNCOND 0x03 #define REAS_DFLCDURALRT 0x04 #define REAS_DFLCIMMDRSP 0x05 #define REAS_MBLSUBNOTRCHBL 0x06 Token ANSI88 ANSI92 ANSI95 ITU Blue ITU White Q.767 notSuscr * redirRsn * spare H

Call Diversion Treatment Indicators IE

typedef struct_callDivTrtmnt    /* Call diversion treatment Ind  */
{
    ElmtHdr eh;                 /* element header                */
    TknU8   callToBeDiv;        /* call to be diverted indicator */
    TknU8   spare1;             /* bits c-g                      */
}SiCallDivTrtmnt;

The callToBeDiv field is coded to one of the following values:

#define CALL_DIV_NO_INDICATION      0
#define CALL_DIV_ALLOWED            1
#define CALL_DIV_NOT_ALLOWED        2
#define CALL_DIV_SPARE              3 



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`callToBeDiv`					*		*	*	*
`spare1`					C-G		C-G	C-G	C-G

Call Modification Indicators IE

This IE is used to support in-call modification in ITU-T (CCITT) 1988 networks. In-call modification is not supported in ANSI networks and has been removed from the ITU-T 1992 standards. typedef struct _calModInd /* Call Modification Indicators */ { ElmtHdr eh; /* element header */ TknU8 modInd; /* call modification indicators */ TknU8 spare; /* spare bits */ } SiCalModInd;
The modInd field is coded to one of the following values: #define MOD_SERV1 0x01 #define MOD_SERV2 0x02 Token ANSI88 ANSI92 ANSI95 ITU Blue ITU White Q.767 modInd * * spare C-H C-H

Call Offering Treatment Indicators IE

typedef struct_callOffTrtmnt  /* Call offering treatment Ind  */
{
    ElmtHdr eh;               /* element header                */
    TknU8   callToBeOff;      /* call to be offered indicator  */
    TknU8   spare1;           /* bits G-G                      */
}SiCallOffTrtmnt;

The callToBeOff field is coded to one of the following values:

#define CALL_OFF_NO_INDICATION      0
#define CALL_OFF_ALLOWED            1
#define CALL_OFF_NOT_ALLOWED        2
#define CALL_OFF_SPARE              3 



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Token	ANSI 88	ANSI 92	ANSI 95	ITU Blue	ITU White	Q. 767	ITU 1997	ETSI V2	ETSI V3
`callToBeOff`					*		*	*	*
`spare1`					C-G		C-G	C-G	C-G

Call Reference IE

The reference IE is a reference number assigned to a call to be used in subsequent messages related to that call. This number has meaning only to the exchange which assigns it. Note: For ANSI networks, use the callRefA structure, which supports 24-bit point codes; for ITU-T networks, use the callRef structure, which supports 14-bit point codes. typedef struct _callRef /* Call Reference */ { ElmtHdr eh; /* element header */ TknU32 callId; /* call identity */ TknU16 pntCde; /* point code */ } SiCallRef; typedef struct _callRefA /* Call Reference */ { ElmtHdr eh; /* element header */ TknU32 callId; /* call identity */ TknU32 pntCde; /* point code */ } SiCallRefA;
The callID field is encoded as a 32-bit quantity of which the least significant 24 bits are used.
The pntCde field is encoded as a 32-bit (ANSI) or 16-bit (ITU-T) quantity of which the least significant 24 bits (ANSI) or the least significant 14 bits (ITU-T) are used. For example, an ANSI point code represented by the (decimal) string 1.4.7 would be encoded as (hex) 0x00010407. Token ANSI88 ANSI92 ANSI95 ITU Blue ITU White Q.767 callId * * * * * pntCde * * * * *

Token	ANSI88	ANSI92	ANSI95	ITU Blue	ITU White	Q.767
`callId`	*	*	*	*	*
`pntCde`	*	*	*	*	*

Call Transfer Number IE

typedef struct_callXferNum    /* Call transfer number                 */
{
    ElmtHdr eh;               /* element header                       */
    TknU8   natAddrInd;       /* nature of address indicator          */
    TknU8   oddEven;          /* odd or even                          */
    TknU8   scrnInd;          /* screen indicator                     */
    TknU8   presRest;         /* Address presentation restricted ind. */
    TknU8   numPlan;          /* numbering plan                       */
    TknU8   spare1;           /* spare bits                           */
    TknU8   addrSig;          /* Address signal                       */
}SiCallXferNum;

See the Called/Calling Party Number IEs for values for the fields.

Call Transfer Reference IE

typedef struct_callXferRef     /* Call transfer reference    */
{
    ElmtHdr eh;                /* element header             */
    TknU8   cllXferRef;;       /* call transfer value 0-255  */
}SiCallXferRef; 



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Token	ANSI 88	ANSI 92	ANSI 95	ITU Blue	ITU White	Q.767	ITU 1997	ETSI V2	ETSI V3
`cllXferRef`					*		*	*	*

Called IN Number IE

typedef struct_cdINNum        /* Called IN number                     */
{
    ElmtHdr eh;               /* element header                       */
    TknU8   natAddrInd;       /* nature of address indicator          */
    TknU8   oddEven;          /* odd or even                          */
    TknU8   spare1;           /* spare bits                           */
    TknU8   scrnInd;          /* screen indicator                     */
    TknU8   presRest;         /* Address presentation restricted ind. */
    TknU8   numPlan;          /* numbering plan                       */
    TknU8   spare2;           /* spare bits                           */
    TknU8   addrSig;          /* Address signal                       */
}SiCdINNum;

See the Called/Calling Party Number IEs for values for the fields.

CCSS IE

typedef struct _ccSS       /* CCSS (CCBS in ETSI v2) */
{
    ElmtHdr eh;            /* element header         */
    TknU8   ccssCallInd;   /* CCSS call indicator    */
    TknU8   spare1;        /* bits B-H               */
} SiCCSS;

The ccssCallInd field is coded to one of the following values:

#define CCSS_NO_INDICATION   0
#define CCSS_CALL            1 



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Token	ANSI 88	ANSI 92	ANSI 95	ITU Blue	ITU White	Q.767	ITU 1997	ETSI V2	ETSI V3
`ccss CallInd`					*		*	*	*
`spare1`					B-H		B-H	B-H	B-H

Note: In the CCSS information element, the ITU 1997 parameter is the same as the CCBS parameter in ETSI V2.

Called Party Number IE

The called party number IE contains the information necessary to identify the called party. typedef struct _cdPtyNum /* Called Party Number */ { ElmtHdr eh; /* element header */ TknU8 natAddrInd; /* nature of addr indicator */ TknU8 oddEven; /* odd or even */ TknU8 spare; /* spare bits */ TknU8 numPlan; /* numbering plan */ TknU8 reserved; /* reserved bits */ TknU8 innInd; /* internal network number *indic. */ TknStr addrSig; /* Address Signal */ } SiCdPtyNum;
The fields in the SiCdPtyNum structure are encoded as follows:
natAddrInd

#define SUBSNUM 0x01 /* Subscriber number */ #define NATNUM 0x03 /* Nationally significant number */ #define INTNATNUM 0x04 /* International number */
ANSI specific codes
#define SUBSNUMOPREQ 0x71 /* subscriber number operator * requested */ #define NATNUMOPREQ 0x72 /* national number operator * requested */ #define INTNATNUMOPREQ 0x73 /* international number operator * requested */ #define NONUMPRESOPREQ 0x74 /* no number present operator * requested */ #define NONUMPRESCUTTHRU 0x75 /* no number present cut-through * call to carrier */ #define TSTLINETSTCODE 0x77 /* test line test code */ #define NINEFIVEOH 0x76 /* 950+ service */
oddEven This field specifies whether the number of digits in the addrSig field is even (and hence the last octet contains two digits) or odd (last octet contains only one digit, most significant four bits not used). #define NMB_EVEN 0 #define NMB_ODD 1
numPlan #define NP_UNK 0x00 /* unknown */ #define NP_ISDN 0x01 /* ISDN/telphny-E.164/E.163 */ #define NP_TEL 0x02 /* telephny numbering E.163 */ #define NP_DATA 0x03 /* data numbering - X.121 */ #define NP_TELEX 0x04 /* telex numb. - Recom. F.69 */ #define NP_NATIONAL 0x08 /* nat'l standard numbering */ #define NP_PRIVATE 0x09 /* private numbering */ #define NP_EXT 0x0f /* reserved for extension */
innInd #define INN_ALLOW 0x00 #define INN_NOTALLOW 0x01
addrSig The actual address digits, encoded as follows: Octet 1 2nd Address Digit 1st (most significant) Address Digit ... ... ... Octet n m + 1^th Address Digit or Filler m^th Address Digit where each digit is encoded with the following bit pattern: Bit Pattern Digit/Signal 0000 0 0001 1 0010 2 0011 3 0100 4 0101 5 0110 6 0111 7 1000 8 1001 9 1010 spare 1011 code 11 1100 code 12 1101 spare 1110 spare 1111 ST Token ANSI88 ANSI92 ANSI95 ITU Blue ITU White Q.767 natAddrInd * * * * * * oddEven * * * * * * spare 2(8) 2(8) 2(8) reserved 2(1-4) 2(1-4) 2(1-4) 2(1-4) 2(1-4) 2(1-4) numplan * * * * * * innInd * * * addrSig * * * * * *

Octet 1	2nd Address Digit	1st (most significant) Address Digit
...	...	...
Octet n	m + 1^th Address Digit or Filler	m^th Address Digit

Bit Pattern	Digit/Signal
0000	0
0001	1
0010	2
0011	3
0100	4
0101	5
0110	6
0111	7
1000	8
1001	9
1010	spare
1011	code 11
1100	code 12
1101	spare
1110	spare
1111	ST

Calling Party Number IE

 typedef struct _cgPtyNum  /* Calling Party Number                */
{
  ElmtHdr  eh;             /* element header                      */
  TknU8    natAddrInd;     /* nature of address indicator         */
  TknU8    oddEven;        /* odd or even                         */
  TknU8    scrnInd;        /* screen indicator                    */
  TknU8    presRest;       /* Addr presentation restricted ind.   */
  TknU8    numPlan;        /* numbering plan                      */
  TknU8    niInd;          /* number incomplete indicator         */
  TknU8    spare;          /* spare bits                          */
  TknStr   addrSig;        /* Address Signal                      */
} SiCgPtyNum;

The fields in the SiCgPtyNum structure are encoded as follows:

natAddrInd

See Called Party Number IE description.

oddEven

See Called Party Number IE description.

scrnInd

      #define USRPROVNOTVER   0x00  /* user provided not verified     */
      #define USRPROV         0x01  /* user provided, verified passed */
      #define USRPROVVERFAIL  0x02  /* user provided, verified failed */
      #define NETPROV         0x03  /* network provided               */

presRest

      #define PRESALLOW       0x00  /* Presentation allowed       */
      #define PRESREST        0x01  /* Presentation restricted    */
      #define ADDRNOAVAIL     0x02  /* Address not available      */

numPlan

See Called Party Number IE description.

niInd

      #define NBMCMLTE        0x00  /* Number complete      */
      #define NBMINCMLTE      0x01  /* Number incomplete    */

addrSig

See Called Party Number IE description.


Token	ANSI88	ANSI92	ANSI95	ITU Blue	ITU White	Q.767
`natAddrInd`	*	*	*	*	*	*
`oddEven`	*	*	*	*	*	*
`numPlan`	*	*	*	*	*	*
`scrnInd`	*	*	*	*	*	*
`presRest`	*	*	*	*	*	*
`niInd`				*	*	*
`spare`	2(8)	2(8)	2(8)
`addrSig`	*	*	*	*	*	*

Calling Party Category IE

This IE is sent in the forward direction to indicate the type of the originating party and, possibly for operator assisted calls, the desired service language. typedef struct _cgPtyCat /* Calling Party Category */ { ElmtHdr eh; /* element header */ TknU8 cgPtyCat; /* calling party category */ } SiCgPtyCat;
The cgPtyCat field is coded to one of the following values: #define CAT_UNKNOWN 0x00 /* Unknown (default) */ #define CAT_OPLANGFR 0x01 /* French Language Operator */ #define CAT_OPLANGENG 0x02 /* English Language Operator */ #define CAT_OPLANGGER 0x03 /* German Language Operator */ #define CAT_OPLANGRUS 0x04 /* Russian Language Operator */ #define CAT_OPLANGSP 0x05 /* Spanish Language Operator */ #define CAT_ADMIN1 0x06 /* avail. to administrators */ #define CAT_ADMIN2 0x07 /* avail. to administrators */ #define CAT_ADMIN3 0x08 /* avail. to administrators */ #define CAT_ORD 0x0a /* ordinary subscriber */ #define CAT_PRIOR 0x0b /* priority subscriber */ #define CAT_DATA 0x0c /* data call */ #define CAT_TEST 0x0d /* test call */ #define CAT_PAYPHONE 0x0f /* pay phone */ /* defines for ANSI */ #define CAT_PRECLVL2 0xfa /* Precedence Level 2 */ #define CAT_PRECLVL3 0xfb /* Precedence Level 3 */ #define CAT_PRECLVL4 0xfc /* Precedence Level 4 */ #define CAT_PRECLVL5 0xfd /* Precedence Level 5 */ Token ANSI88 ANSI92 ANSI95 ITU Blue ITU White Q.767 cgPtyCat * * * * * *

Token	ANSI88	ANSI92	ANSI95	ITU Blue	ITU White	Q.767
`cgPtyCat`	*	*	*	*	*	*

Carrier ID IE

The Carrier ID IE is used to specify the carrier to be used for a connection in ANSI networks. typedef struct _carrierId /* Carrier ID */ { ElmtHdr eh; /* element header */ TknU8 netIdPln1; /* network id plan */ TknU8 typNetId2; /* Network id type */ TknU8 spare; /* spare bits */ TknU8 CIDigit1; /* Network Identity Digit 1 */ TknU8 CIDigit2; /* Network Identity Digit 2 */ TknU8 CIDigit3; /* Network Identity Digit 3 */ TknU8 CIDigit4; /* Network Identity Digit 4 */ } SiCarrierId;
Fields in the SiCarrierId structure are encoded as follows:
netIdPln1 #define NI_UNKNWN 0x00 #define NI_3DIGCIC 0x01 #define NI_4DIGCIC 0x02
typNetId2 #define TNI_CCITT 0x00 #define TNI_NATNET 0x02
CIDigit1, CIDigit2, CIDigit3, CIDigit4 Carrier identification digits are encoded as described for the address signal field in the Called Party Number IE description. Token ANSI88 ANSI92 ANSI95 ITU Blue ITU White Q.767 netIdPln * * typNetId * * spare 1(8) 1(8) CIDigit1 * * CIDigit2 * * CIDigit3 * * CIDigit4 * *

Carrier Selection Information IE

This IE specifies how the carrier for a connection is selected. typedef struct _carrierSelInf /* Carrier Selection Info */ { ElmtHdr eh; /* element header */ TknU8 carrierSelInf; /* carrier selection info */ } SiCarrierSelInf;
The SiCarrierSelInf field is encoded to one of the following values: #define CARSEL_NOIND 0x00 #define CARSEL_PRESUB_NOINPUT 0x01 #define CARSEL_PRESUB_INPUT 0x02 #define CARSEL_PRESUB_INPUTUNDET 0x03 #define CARSEL_NOTPRESUB_INPUT 0x04 Token ANSI88 ANSI92 ANSI95 ITU Blue ITU White Q.767 carrierSelInf * *

Cause Indicator IE

The cause indicator IE identifies the cause of a failure, disconnect, or rejected message. typedef struct _siCauseDgn /* Cause Indicator */ { ElmtHdr eh; /* element header */ TknU8 location; /* location */ TknU8 spare; /* spare bits */ TknU8 cdeStand; /* coding standard */ TknU8 recommend; /* recommendation */ TknU8 causeVal; /* cause value */ TknStr dgnVal; /* diagnostics */ } SiCauseDgn;
The fields in the SiCauseDgn structure are encoded as follows:
location #define ILOC_USER 0x00 /* user */ #define ILOC_PRIVNETLU 0x01 /* private net serving local user */ #define ILOC_PUBNETLU 0x02 /* public net serving local user */ #define ILOC_TRANNET 0x03 /* transit network */ #define ILOC_PRIVNETRU 0x04 /* private network serving the * remote user */ #define ILOC_PUBNETRU 0x05 /* public network serving the * remote user */ #define ILOC_INTNET 0x07 /* international network */ #define ILOC_NETINTER 0x0a /* network beyond internetworking * point */ #define ILOC_NOINFOAV 0x0f /* no info concerning origin loc */
cdeStand #define CSTD_CCITT 0x00 /* CCITT standards */ #define CSTD_INT 0x01 /* Reserved for other international * standards */ #define CSTD_NAT 0x02 /* National Standard */ #define CSTD_SPECLOC 0x03 /* Standard Specific to Identified * Location */ #define CSTD_NET 0x03 /* Standard Specific Network */
recommend #define REC_Q763 0x00 /* CCITT Recommendation Q.763 */ #define REC_X21 0x03 /* CCITT Recommendation X.21 */ #define REC_X25 0x04 /* CCITT Recommendation X.25 */ #define REC_Q1000 0x05 /* CCITT Recommendation Q.1000 */
causeVal /* Class 000 and 001 - normal events */ #define CCUNALLOC 1 /* unassigned number */ #define CCNORTTOTSFNET 2 /* no route to transit net */ #define CCNORTTODEST 3 /* no route to destination */ #define CCSENDSPCLTONE 4 /* send special info tone */ #define CCMISDIALDTRNK 5 /* misdialed trunk prefix */ #define CCCALLCLR 16 /* normal call clearing */ #define CCUSRBSY 17 /* user busy */ #define CCNOUSRRSP 18 /* no user response */ #define CCNOANSWR 19 /* no answer(user alerted ) */ #define CCCALLRJT 21 /* call rejected */ #define CCNMBRCHG 22 /* number changed */ #define CCDESTOUTORD 27 /* destination out of order */ #define CCADDRINCOMP 28 /* Address incomplete */ #define CCFACREJ 29 /* facility rejected */ #define CCNORMUNSPEC 31 /* normal unspecified */ /* Class 010 - resource unavailable */ #define CCNOCIRCUIT 34 /* no circuit/channel available */ #define CCNETAOL 38 /* network out of order */ #define CCTMPFAIL 41 /* Temporary failure */ #define CCSWTCHCONG 42 /* Switch equip congestion */ #define CCREQUNAVAIL 44 /* requested circuit/channel * unavailable */ #define CCRESCUNAVAIL 47 /* resrc. Unavail,unspecfd */ /* defines for ANSI */ #define CCUSRINFDISCARD 43 /* user info discarded */ #define CCPREEMPT 47 /* preemption */ /* Class 011 - service/option not available */ #define CCFACNOTSUB 50 /* facility not subscribed */ #define CCINCBARRDCUG 55 /* incoming calls barred within CUG */ #define CCNOTAUTHBCAP 57 /* bearer capability not authorized */ #define CCBCAPUNAVAIL 58 /* bearer capability not available */ #define CCSERVUNAVAIL 63 /* Service or option unavailable */ /* Class 100 - service/option not implemented */ #define CCBCAPNOTIMP 65 /* bearer cap not implemntd */ #define CCFACNOTIMP 69 /* facility not implemented */ #define CCRESTDIG 70 /* only restricted digital bear cap * is avail. */ #define CCSERVNOTIMP 79 /* service/option not implemented */ /* Class 101 - invalid message */ #define CCCUNOTMEMBR 87 /* Called User Not member of CUG */ #define CCINCOMPDEST 88 /* incompatible destination */ #define CCINVTRNSTNET 91 /* invalid transit network * selection */ #define CCINVMSG 95 /* invalid message unspecified */ /* defines for ANSI */ #define CCINVALCALLREF 81 /* invalid call ref. value */ /* Class 110 - protocol error */ #define CCINFOELMSSG 96 /* mandatory info element is * missing */ #define CCNOMSGTYP 97 /* msg type is non-existent or not * implemented */ #define CCNOPARAMDISC 99 /* Param. non-existent or not * implemented - discard */ #define CCTMRRECOV 102 /* timeout recovery */ #define CCNOPARAMPASS 103 /* Param. non-existent, or not * impl. pass along */ #define CCPROTERR 111 /* protcl error,unspecified */ /* defines for ANSI */ #define CCINVALPARAMCONT 100 /* invalid parm. contents */ /* Class 111 - interworking */ #define CCINTRWRK 127 /* interworking unspecified */
dgnVal The structure of the diagnostic field depends on the cause value. The ISUP layer does not interpret the contents but passes the value through as a transparent string of octets. The user application must encode/interpret the string of octets as specified for the associated cause value in the relevant ANSI or ITU-T recommendations. Token ANSI88 ANSI92 ANSI95 ITU Blue ITU White Q.767 location * * * * * * spare 1(5) 1(5) 1(5) 1(5) 1(5) 1(5) cdeStand * * * * * * recommend * causeVal * * * * * * dgnVal * * * *

Token	ANSI88	ANSI92	ANSI95	ITU Blue	ITU White	Q.767
`location`	*	*	*	*	*	*
`spare`	1(5)	1(5)	1(5)	1(5)	1(5)	1(5)
`cdeStand`	*	*	*	*	*	*
`recommend`				*
`causeVal`	*	*	*	*	*	*
`dgnVal`		*	*	*	*

CCBS

Refer to "CCSS IE" on page 190 to manage this information element.

CCNR Possible Indicator IE

typedef struct _ccnr      /* CCNR possible indicator  */
{
    ElmtHdr eh;           /* element header           */
    TknU8   ccnrPossInd;  /* CCNR possible indicator  */
    TknU8   spare1;       /* bits B-H                 */
}SiCCNR;

The ccnrPossInd field is encoded to one of the following values:

      #define CCNR_NOT_POSSIBLE          0
      #define CCNR_POSSIBLE              1 



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Charge Number IE

This IE is used to pass a charge number between signaling points in ANSI networks. typedef struct _chargeNum /* Charge Number */ { ElmtHdr eh; /* element header */ TknU8 natAddrInd; /* nature of address indicator */ TknU8 oddEven; /* odd or even */ TknU8 reserved; /* reserved bits */ TknU8 numPlan; /* numbering plan */ TknU8 spare; /* spare bits */ TknStr addrSig; /* Address Signal */ } SiChargeNum; The fields in this structure are encoded as described in the Called Party Number IE description. Token ANSI88 ANSI92 ANSI95 ITU Blue ITU White Q.767 natAddrInd * * * oddEven * * * reserved 2(1-4) 2(1-4) 2(1-4) numPlan * * * spare 2(8) 2(8) 2(8) addrSig * * *

Token	ANSI88	ANSI92	ANSI95
`natAddrInd`	*	*	*
`oddEven`	*	*	*
`reserved`	2(1-4)	2(1-4)	2(1-4)
`numPlan`	*	*	*
`spare`	2(8)	2(8)	2(8)
`addrSig`	*	*	*

Charged Party Identification IE (ITU97)

To support this information element, use the extended element feature described in "Extended Element" on page 177.

Circuit Assignment Map IE

typedef struct _cirAssMap
{
    ElmtHdr eh;        /* element header */
    TknU8   mapType;   /* map type */
    TknU8   spare1;    /* bits G-H in first byte */
    TknU8   map1;      /* bits A-H - a bit map of used circuits */
    TknU8   map2;      /* bits A-H */
    TknU8   map3;      /* bits A-H  */
    TknU8   map4;      /* bits A-G   */
    TknU8   spare2;    /* bits H in last byte  */
}SiCirAssMap;

The fields in the SiCirAssMap structure are encoded as follows:

mapType

      #define MAPTYPE_1544   1
      #define MAPTYPE_2048   2

map1, map2, map3, map4

      #define CIRCUIT_NOT_USED    0
      #define CIRCUIT_USED        1 



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Token	ITU White	ITU 1997	ETSI V2	ETSI V3
`mapType`	*	*	*	*
`spare1`	G-H	G-H	G-H	G-H
`map1`	A-H	A-H	A-H	A-H
`map2`	A-H	A-H	A-H	A-H
`map3`	A-H	A-H	A-H	A-H
`map4`	A-G	A-G	A-G	A-G
`spare2`	B-H	B-H	B-H	B-H

Circuit Group Supervision IE

This IE instructs the far exchange on the method of circuit blocking (ANSI) or whether blocking is maintenance or hardware failure related (ITU-T). typedef struct _cirGrpSupMTypInd /* Circuit Group Supervision Msg.Type Ind. */ { ElmtHdr eh; /* element header */ TknU8 typeInd; /* message type ind. */ TknU8 spare; /* spare bits */ } SiCirGrpSupMTypInd;
The typeInd field is coded to one of the following values: #define MAINT 0x00 #define HARDFAIL 0x01 /* defines for ANSI */ #define SOFTWAREGEN 0x02 /* software generated */ /* defines for ANSI 92 */ #define BLOCK_WO_REL 0x00 #define BLOCK_REL 0x01 Token ANSI88 ANSI92 ANSI95 ITU Blue ITU White Q.767 numPlan * * * * * * spare C-H C-H C-H C-H C-H C-H

Token	ANSI88	ANSI92	ANSI95	ITU Blue	ITU White	Q.767
`numPlan`	*	*	*	*	*	*
`spare`	C-H	C-H	C-H	C-H	C-H	C-H

Circuit Group Characteristics IE

This IE is sent in response to a circuit validation request from the far exchange. typedef struct _cirGrpCharInd /* Circuit group characterstic ind. */ { ElmtHdr eh; /* element header */ TknU8 cirGrpCarInd; /* circuit grp. carrier ind. */ TknU8 dblSzCtrlInd; /* double seizing control ind. */ TknU8 alarmCarInd; /* alarm carrier indicator */ TknU8 contChkReqInd; /* continuity check requirements ind. */ } SiCirGrpCharInd;
The fields in the SiCirGrpCharInd structure are encoded as follows:
cirGrpCarInd #define CG_UNKNOWN 0x00 /* unknown */ #define CG_ANALOG 0x01 /* analog */ #define CG_DIGITAL 0x02 /* digital */ #define CG_ANALDIG 0x03 /* digital and analog */
dblSzCtrlInd #define DS_UNKNOWN 0x00 /* unknown */ #define DS_ODDCIC 0x01 /* odd cic control */ #define DS_EVENCIC 0x02 /* even cic control */ /* defines for ANSI92 */ #define DS_ALLCIC 0x03 /* all cic control */
alarmCarInd #define AC_UNKNOWN 0x00 /* unknown */ #define AC_SOFTCARHAND 0x01 /* software carrier handling */ #define AC_HARDCARHAND 0x02 /* hardware carrier handling */
contChkReqInd #define CO_UNKNOWN 0x00 /* unknown */ #define CO_NONE 0x01 /* none */ #define CO_STATIS 0x02 /* statistical */ #define CO_PERCALL 0x03 /* per call */ Token ANSI88 ANSI92 ANSI95 ITU Blue ITU White Q.767 cirGrpCarInd * * * dblSzCtrlInd * * * alarmCarInd * * * contChkReqInd * * *

Circuit Assignment Map IE

This IE is used in the setup and management of NxDS0 connections. typedef struct cirAssignMap /* Circuit Assignment Map */ { ElmtHdr eh; /* element header */ TknU8 mapFormat; /* map type */ TknU8 spare; /* spare bits */ TknU8 map; /* assignment map */ } SiCirAssignMap;
The fields in the SiCirAssignMap structure are encoded as follows:
mapFormat #define MAP_DS1 0x01 /* DS1 map format */ Token ANSI88 ANSI92 ANSI95 ITU Blue ITU White Q.767 mapFormat * spare * map *

Circuit ID Name IE

This IE is used to identify the CLLI name of a trunk to a far exchange. typedef struct _cirIdName /* Circuit ID Name */ { ElmtHdr eh; /* element header */ TknStr trunkNumClli; /* trunk number and clli code */ TknStr clliCodeA; /* clli code A */ TknStr clliCodeZ; /* clli code Z */ } SiCirIdName;
The trunNumClli parameter is encoded with the ascii representation of the trunk number (one ascii digit per octet - 4 octets total) followed by the CLLI name of the associated trunk (one ascii character per octet). Token ANSI88 ANSI92 ANSI95 ITU Blue ITU White Q.767 trunkNumClli * * * clliCodeA * * * clliCodeZ * * *

Circuit State Indicators IE

This IE indicates the state of a circuit according to the sending exchange. typedef struct _cirStateInd /* Circuit State Indicators */ { ElmtHdr eh; /* element header */ TknStr cirSteInd; /* circuit state indicator. */ } SiCirStateInd;
The cirSteInd field is an array of circuit state values for a range of circuits. Each octet is coded in accordance with the relevant ANSI or ITU-T recommendation. Token ANSI88 ANSI92 ANSI95 ITU Blue ITU White Q.767 cirSteInd * * * * * *

Circuit Validation Response IE

This IE is used to provide the results of a circuit validation request. typedef struct _cirValRspInd /* Circuit validation response indicator */ { ElmtHdr eh; /* element header */ TknU8 cirValRspInd; /* user to user info */ } SiCirValRspInd;
The cirValRspInd field is encoded to one of the following values: #define CV_SUCCESS 0x00 /* successful */ #define CV_FAILURE 0x01 /* failure */ Token ANSI88 ANSI92 ANSI95 ITU Blue ITU White Q.767 cirValRspInd * * *

Closed User Group Interlock Code IE

The CUG Interlock Code IE identifies a closed user group within a network. For ANSI 1988 networks, use the cugIntCodeA structure; for ITU-T networks, use the cugIntCode structure. This IE is not used in ANSI 1992 networks. typedef struct _cugIntCode /* Closed User Group Interlock Code */ ElmtHdr eh; /* element header */ TknU8 dig2; /* Digit 2 */ TknU8 dig1; /* Digit 1 */ TknU8 dig4; /* Digit 4 */ TknU8 dig3; /* Digit 3 */ TknU16 binCde; /* binary Code */ TknU16 ISDNIdent; /* ISDN identifier */ } SiCugIntCode;
The fields in the SiCugIntCode structure are encoded as follows:
dig1, dig2, dig3, dig4 The four digits (binary representation) of the network identity code (0 | 9 + telephone country code or X.121 DNIC).
binCde The 16-bit binary code assigned by the network administrator.
ISDNIdent ISDN network identifier, as per ANSI 1988 recommendations. Token ANSI88 ANSI92 ANSI95 ITU Blue ITU White Q.767 dig1 * * * * dig2 * * * * dig3 * * * * dig4 * * * * binCde * * * * ISDNIdent *

Collect Call Request IE

typedef struct _collCallReq
{
    ElmtHdr eh;             /* element header             */
    TknU8   collCallReqInd; /* Collect call req indicator */
    TknU8   spare1;         /* bits B-H                   */
}SiCollCallReq;

The collCallReqInd field is encoded as follows:

     #define COLLECT_NO_INDICATION    0
     #define COLLECT_CALL_REQ         1 



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Common Language Location ID IE

This IE is used to identify a signaling point via its CLLI code in ANSI networks. typedef struct _clli /* Common Language Location ID */ { ElmtHdr eh; /* element header */ TknStr clliCode; /* clli codes */ } SiCLLI;
The clliCode field is encoded with an ASCII representation of the exchange CLLI code (town, state, building, etc.) as per ANSI recommendations. Token ANSI88 ANSI92 ANSI95 ITU Blue ITU White Q.767 clliCode * * *

Conference Treatment Indicator IE

typedef struct _confTrtmnt  /* Conference Treatment Ind        */
{
    ElmtHdr eh;             /* element header                  */
    TknU8   confAccInd;     /* conference acceptance indicator */
    TknU8   spare1;         /* bits C-G                        */
}SiConfTrtmnt;

The confAccInd field is encoded as follows:

     #define CONF_ACC_NO_INDICATION    0
     #define CONF_ACC_ACCEPTED         1
     #define CONF_ACC_REJECTED         2
     #define CONF_ACC_SPARE            3 



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Connected Number IE

The connected number IE is sent in the backward direction to identify the connected party in ITU-T networks. typedef struct _connectedNum /* Connected number */ { ElmtHdr eh; /* element header */ TknU8 natAddr /* nature of address indicator */ TknU8 oddEven; /* odd or even */ TknU8 scrnInd; /* screen indicator */ TknU8 presRest; /* Address presentation restricted ind. */ TknU8 numPlan; /* numbering plan */ TknStr addrSig; /* Address Signal */ } SiConnectedNum;
The fields in the SiConnectedNum structure are encoded as follows:
natAddr See Called Party Number IE description.
oddEven See Called Party Number IE description.
scrnInd See Calling Party Number IE description.
presRest See Calling Party Number IE description.
numPlan See Called Party Number IE description.
addrSig See Called Party Number IE description. Token ANSI88 ANSI92 ANSI95 ITU Blue ITU White Q.767 natAddrInd * * * * oddEven * * * * numPlan * * * * scrnInd * * * presRest * * * * spare 2(8) 2(8) 2(8) 2(8) addrSig * * * *

Connection Request IE

This IE is sent in the forward direction to request an end-to-end SCCP connection. typedef struct _connReq /* Connection Request */ { ElmtHdr eh; /* element header */ TknU32 locRef; /* local reference( a 24bit quantity) */ TknU32 pntCde; /* point code */ TknU8 protClass; /* protocol class */ TknU8 credit; /* credit */ } SiConnReq;
The fields in the SiConnReq structure are encoded as follows:
locRef A 24-bit number used by the originating exchange as a reference for this connection.
pntCde A 32-bit quantity of which the least significant 24 bits (ANSI) or the least significant 14 bits (ITU-T) are used. For example, an ANSI point code represented by the (decimal) string 1.4.7 would be encoded as (hex) 0x00010407.
protClass SCCP protocol class (binary encoding) as defined in the relevant ANSI or ITU-T recommendations.
credit Window size requested for end-to-end connection. Token ANSI88 ANSI92 ANSI95 ITU Blue ITU White Q.767 locRef * * * * * pntCde * * * * * protClass * * * * * credit * * * * *

Continuity Indicators IE

This IE indicates whether or not a continuity check was successful. typedef struct _contInd /* Continuity indicators */ { ElmtHdr eh; /* element header */ TknU8 contInd; /* continuity indicator */ TknU8 spare; /* spare bits */ } SiContInd;
The contInd field is encoded as follows: #defin

Token	ANSI92	ANSI95
`partySel`	*	*
`linePrivInfInd`	*	*
`BGIDident`	*	*
`attendStat`	*	*
`spare`	*	*
`busiGrpIdent`	*	*
`subGrpIdent`	*	*
`linePriv`	*	*

Token	ANSI92	ANSI95
`netIdPln`	*	*
`typNetId`	*	*
`spare`	1(8)	1(8)
`CIDigit1`	*	*
`CIDigit2`	*	*
`CIDigit3`	*	*
`CIDigit4`	*	*

Token	ANSI88	ANSI92	ANSI95
`cirGrpCarInd`	*	*	*
`dblSzCtrlInd`	*	*	*
`alarmCarInd`	*	*	*
`contChkReqInd`	*	*	*

Token	ANSI88	ITU Blue	ITU White	Q.767
`dig1`	*	*	*	*
`dig2`	*	*	*	*
`dig3`	*	*	*	*
`dig4`	*	*	*	*
`binCde`	*	*	*	*
`ISDNIdent`	*