Dialogic 6.2 - Manual (Page 211)

Placing Calls on Hold Using BSMI
November 2009 211
Example 1
memset(&l43msg,0,sizeof(L4_to_L3_struct));
l43msg->msgtype = L4L3mUNIVERSAL;
l43msg->data.universal.msg_id = MT_DL_RETRIEVE;
Example 2
#define IEID_CAUSE 0x08 //CAUSE IE ID code
#define EXTENSION_BIT 0x80 //extension bit for an octet
memset(&l43msg,0,sizeof(L4_to_L3_struct));
l43msg->msgtype = L4L3mUNIVERSAL;
l43msg->data.universal.msg_id = MT_DL_RETRIEVE_REJ;
l43msg->data.universal.ie_count = 1; //must equal all IEs
l43msg->data.universal.ie.ie_id = IEID_CAUSE;
l43msg->data.universal.ie.ie_length = 2;
l43msg->data.universal.ie.ie_data[0] = EXTENSION_BIT | Coding_standard |
Location; //where Coding_standard and Location are from ITU-T Q.850
// subclause 2.2.2 and 2.2.3 respectively
l43msg->data.universal.ie.ie_data[1] = EXTENSION_BIT | Cause ; //where Cause
is from ITU-T Q.850 subclause 2.2.5
For more information on L4L3mUNIVERSAL and
L3L4mUNIVERSAL, see Volume 5, Bfv API Reference Manual.