Associated variants: All except ANSI 88
Contains information sent in the backward direction to notify the originating exchange of additional information about a call in progress.
typedef struct _optBckCalInd /* Optional Backward Call Ind. */
{
ElmtHdr eh; /* element header */
TknU8 inbndInfoInd; /* in-band information indicator */
TknU8 caFwdMayOcc; /* call forward may occur ind. */
TknU8 segInd; /* simple segmentation indicator */
TknU8 netDelay; /* network excessive delay indicator */
TknU8 usrNetIneractInd; /* user-network interaction ind. */
TknU8 mlppUsrInd; /* MLPP user indicator */
TknU8 spare; /* spare bits */
TknU8 reserved; /* reserved bits */
} SiOptBckCalInd;
The fields in the SiOptBckCalInd structure are encoded as follows:
Field |
Value |
inbndInfoInd |
In-band information indicator. Defined values: 0x00 = INBND_NOIND No indication 0x01 = INBND_AVAIL In-band
information or an appropriate pattern is now |
caFwdMayOcc |
Call forward may occur indicator. Defined values 0x00 = CAFWD_NOIND No indication 0x01 = CAFWD_MAYOCC Call diversion may occur |
segInd |
Simple segmentation indicator. Defined values: 0 = NOTSEGMENTED No indication will be sent 1 = SEGMENTED Additional information will be sent in a segmentation message |
netDelay |
Network excessive delay indicator. Defined values: 0 = No indication 1 = Delay encountered |
usrNetIneractInd |
User-network interaction indicator. Defined values: 0x00 = USERNET_NOIND No indication 0x01 = USERNET_INTERACTOCCUR User-network interaction occurs, cut through in both directions |
mlppUsrInd |
MLPP user indicator. Defined values: 0 = No indication 1 = MLPP user |
Token |
ANSI 92 |
ANSI 95 |
BICC |
ETSI V2 |
ETSI V3 |
inbndInfoInd |
* |
* |
* |
* |
* |
caFwdMayOcc |
* |
* |
* |
* |
* |
segInd |
|
|
* |
* |
* |
netDelay |
|
* |
|
|
|
usrNetIneractInd |
* |
* |
|
|
|
mlppUsrInd |
|
|
* |
* |
* |
spare |
C-D |
C-E |
|
|
|
reserved |
E-G |
E-F |
E-H |
E-H |
E-H |
Token |
ITU Blue |
ITU White |
ITU 97 |
Q.767 |
inbndInfoInd |
* |
* |
* |
* |
caFwdMayOcc |
* |
* |
* |
* |
segInd |
|
* |
* |
|
netDelay |
|
|
|
|
usrNetIneractInd |
|
|
|
|
mlppUsrInd |
|
* |
* |
|
spare |
C-D |
|
|
C-D |
reserved |
E-H |
E-H |
E-H |
|