Backward call indicators

Associated variants: All

Contains information sent in the backward direction to enable the originating exchange to complete processing 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 encoded as follows:

Field

Value

chrgInd

Charge indicator. Defined values:

0x00 = CHRG_NOIND   No indication

0x01 = CHRG_NOCHRG   No charge

0x02 = CHRG_CHRG   Charge

cadPtyStatInd

Called party's status indicator. Defined values:

0x00 = CADSTAT_NOIND   No indication

0x01 = CADSTAT_SUBFREE   Subscriber free

0x02 = CADSTAT_CONNFREE   Connect when free (national use)

0x03 = CADSTAT_DELAY   Excessive delay; spare in BICC

cadPtyCatInd

Called party's category indicator. Defined values:

0x00 = CADCAT_NOIND   No indication

0x01 = CADCAT_ORDSUBS   Ordinary subscriber

0x02 = CADCAT_PAYPHONE   Payphone

end2EndMethInd

End-to-end method indicator.  Defined values for variants other than BICC:

0x00 = E2EMTH_NOMETH   No end-to-end method available

0x01 = E2EMTH_PASSALNG   Pass-along method available (national use)

0x02 = E2EMTH_SCCPMTH   SCCP method available

0x03 = E2EMTH_BOTH   Pass-along and SCCP methods available (national use)

 

Defined values for BICC: 0x00 = E2EMTH_NOMETH   No end-to-end method available

ox01 = E2EMTH_RSVRD1   Reserved

0x02 = E2EMTH_RSVRD2   Reserved

0x03 = E2EMTH_RSVRD3   Reserved

intInd

Interworking indicator. Defined values:

0x00 = INTIND_NOINTW  No end-to-end information available

0x01 = INTIND_INTW   End-to-end information available

segInd

Segmentation indicator.

Defined values:

0x00 = SEGIND_NOIND   No indication

0x01 = SEGIND_INFO   Additional information will be sent

end2EndInfoInd

End-to-end information indicator (national use). Defined values for variants other than BICC:

0x00 = E2EINF_NOINFO   No end-to-end information available

0x01 = E2EINF_INFO   End-to-end information available

 

Defined values for BICC:

0x00 = E2EINF_NOINFO   No end-to-end information available

0x01 = E2EINF_RSVRD   Reserved

isdnUsrPrtInd

ISDN user part indicator. Defined values for variants other than BICC:

0x00 = ISUP_NOTUSED   ISDN user part not used all the way

0x01 = ISUP_USED   ISDN user part used all the way

 

Defined values for BICC:

0x00 = BICC_NOTUSED   BICC not used all the way

0x01 = BICC_USED   BICC used all the way

holdInd

Holding indicator (national use). Defined values:

0x00 = HOLD_NOTREQD   Holding requested

0x01 = HOLD_REQD   Holding not requested

isdnAccInd

ISDN access indicator. Defined values:

0x00 = ISDNACC_NONISDN   Terminating access non-ISDN

0x01 = ISDNACC_ISDN   Terminating access ISDN

echoCtrlDevInd

Echo control device indicator. Defined values:

0x00 = ECHOCDEV_NOTINCL   Incoming echo control device not included

0x01 = ECHOCDEV_INCL   Incoming echo control device included

sccpMethInd

SCCP method indicator. Defined values for non-BICC variants:

0x00 = SCCPMTH_NOIND   No indication

0x01 = SCCPMTH_CONLESS   Connectionless model available (national use)

0x02 = SCCPMTH_CONORNTD   Connection oriented method available

0x03 = SCCPMTH_BOTH   Connectionless and connection oriented methods available (national use)

 

Defined values for BICC:

0x00 = SCCPMTH_NOIND   No indication

0x01 = SCCPMTH_RSVRD1   Reserved

0x02 = SCCPMTH_RSVRD2   Reserved

0x03 = SCCPMTH_RSVRD3   Reserved


Tokens for the ANSI, BICC, and ETSI variants

Token

ANSI 88

ANSI 92

ANSI 95

BICC

ETSI V2

ETSI V3

chrgInd

*

*

*

*

*

*

cadPtyStatInd

*

*

*

*

*

*

cadPtyCatInd

*

*

*

*

*

*

end2EndMethInd

*

*

*

*

*

*

intInd

*

*

*

*

*

*

segInd

 

*

*

 

 

 

end2EndInfoInd

*

 

 

*

*

*

isdnUsrPrtInd

*

*

*

*

*

*

holdInd

*

*

*

*

*

*

isdnAccInd

*

*

*

*

*

*

echoCtrlDevInd

 

*

*

*

*

*

sccpMethInd

 

*

*

*

*

*

spare

N-P

 

 

 

 

 


Tokens for the ITU and Q.767 variants

Token

ITU Blue

ITU White

ITU 97

Q.767

chrgInd

*

*

*

*

cadPtyStatInd

*

*

*

*

cadPtyCatInd

*

*

*

*

end2EndMethInd

*

*

*

*

intInd

*

*

*

*

segInd

 

 

 

 

end2EndInfoInd

*

*

*

*

isdnUsrPrtInd

*

*

*

*

holdInd

*

*

*

*

isdnAccInd

*

*

*

*

echoCtrlDevInd

*

*

*

*

sccpMethInd

*

*

*

*

spare