User`s guide

Dialogic
®
System Release 6.0 PCI for Windows
®
Release Update, Rev 62 — January 30, 2008 162
Dialogic Corporation
Note the following differences between NCAS implementation on Dialogic
®
Springware
Boards and on DM3 Boards:
For more information about using NCAS, see the Dialogic
®
Global Call ISDN Technology
Guide.
New Parameters
For outbound calls, two new parameter IDs have been added to the
GCIS_SET_BEARERCHNL parameter set for setting up NCAS calls on DM3 Boards:
GCIS_PARM_CODINGSTANDARD
Set to ISDN_CODINGSTD_INTL or ISDN_CODINGSTD_CCITT.
GCIS_PARM_TRANSFERCAP
Set to BEAR_CAP_UNREST_DIG.
In addition, the parameter IDs that already exist (described in the Dialogic
®
Global Call
ISDN Technology Guide) are:
GCIS_PARM_TRANSFERMODE
Set to ISDN_ITM_CIRCUIT.
GCIS_PARM_TRANSFERRATE
Set to PACKET_TRANSFER_MODE, which is a new value for
GCIS_PARM_TRANSFERRATE that has been defined for this feature.
For inbound calls, a new GCIS_SET_CALLTYPE parameter set with one new parameter
has been added:
GCIS_PARM_CALL_TYPE
Set to CALLTYPE_NCAS (to indicate an NCAS call) or CALLTYPE_CIRCUIT (to
identify a standard circuit-switched call).
Outbound QSIG NCAS Call Scenarios
After opening the channel (T23 or T30), the gc_util_insert_parm_val( ) function must be
called to set up the four parameters in the GCIS_SET_BEARERCHNL parameter set.
For example:
gc_util_insert_parm_val(pParmBlk, GCIS_SET_BEARERCHNL, GCIS_PARM_CODINGSTANDARD, sizeof(int),
ISDN_CODINGSTD_INTL);
gc_util_insert_parm_val(pParmBlk, GCIS_SET_BEARERCHNL, GCIS_PARM_TRANSFERCAP, sizeof(int),
BEAR_CAP_UNREST_DIG);
gc_util_insert_parm_val(pParmBlk, GCIS_SET_BEARERCHNL, GCIS_PARM_TRANSFERMODE, sizeof(int),
ISDN_ITM_CIRCUIT);
DM3 Boards Springware Boards
Channel used to make NCAS calls for T1 spans 23 (dtiBxT23) 24 (dtiBxT24)
Channel used to make NCAS calls for E1 spans 30 (dtiBxT30) 30 (dtiBxT30)
Number of simultaneous NCAS calls per D channel 8 (32 total for board with
4 spans)
16