Forward call indicators

Associated variants: All

Contains information sent in an IAM message to notify the far exchange of the services required for a call.

typedef struct _fwdCallInd      /* Forward Call Indicators        */
{
    ElmtHdr eh;                 /* element header                 */
    TknU8   natIntCallInd;      /* National/Internat'l Call Ind.  */
    TknU8   end2EndMethInd;     /* end to end method indicator    */
    TknU8   intInd;             /* interworking indicator         */
    TknU8   segInd;             /* segmentation indicator         */
    TknU8   end2EndInfoInd;     /* end to end info indicator      */
    TknU8   isdnUsrPrtInd;      /* ISUP indicator                 */
    TknU8   isdnUsrPrtPrfInd;   /* ISUP preference ind.           */
    TknU8   isdnAccInd;         /* ISDN access indicator          */
    TknU8   sccpMethInd;        /* SCCP method indicator          */
    TknU8   spare;              /* spare bit                      */
    TknU8   natReserved;        /* reserved for national use      */
} SiFwdCallInd;

The fields in the SiFwdCallInd structure are encoded as follows:

Field

Value

natIntCallInd

National/international call indicator. Defined values:

0x00 = CALL_NAT   Treat call as a national call

0x01 = CALL_INTERNAT   Treat call as an international call

end2EndMethInd

End-to-end method indicator. Defined values for supported 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

Internetworking indicator. Defined values:

0x00 = INTIND_NOINTW   No internetworking encountered.

0x01 = INTIND_INTW   Internetworking encountered.

segInd

Segmentation indicator. Defined values:

0x00 = SEGIND_NOIND   No indication

0x01 = SEGIND_INFO   Additional information will be sent

end2EndInfoInd

End-to-end information indicator. Defined values for supported 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

ISUP/BICC indicator. Defined values for supported 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

isdnUsrPrtPrfInd

ISUP/BICC preference indicator. Defined values:

0x00 = PREF_PREFAW   Preferred all the way

0x01 = PREF_NOTREQAW   Not required all the way

0x02 = PREF_REQAW   Required all the way

isdnAccInd

ISDN access indicator. Defined values:

0x00 = ISDNACC_NONISDN   Originating access non-ISDN

0x01 = ISDNACC_ISDN   Originating access ISDN

sccpMethInd

SCCP method indicator. Defined values for supported variants other than BICC:

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

natIntCallInd

*

*

*

*

*

*

end2EndMethInd

*

*

*

*

*

*

intInd

*

*

*

*

*

*

segInd

 

*

*

 

 

 

end2EndInfoInd

*

 

 

*

*

*

isdnUsrPrtInd

*

*

*

*

*

*

isdnUsrPrtPrfInd

*

*

*

*

*

*

isdnAccInd

*

*

*

*

*

*

sccpMethInd

 

*

*

*

*

*

spare

J-L

L

L

L

L

L

natReserved

M-P

M-P

M-P

M-P

M-P

M-P


Tokens for the ITU and Q.767 variants

Token

ITU Blue

ITU White

ITU 97

Q.767

natIntCallInd

*

*

*

*

end2EndMethInd

*

*

*

*

intInd

*

*

*

*

segInd

 

 

 

 

end2EndInfoInd

*

*

*

*

isdnUsrPrtInd

*

*

*

*

isdnUsrPrtPrfInd

*

*

*

*

isdnAccInd

*

*

*

*

sccpMethInd

*

*

*

*

spare

L

L

L

L

natReserved

M-P

M-P

M-P

M-P