isdnNCCI(D4isdn)

isdnNCCI -- ISDN Network Control Connection Information structure

Synopsis

   #include <sys/types.h>
   #include <sys/scoisdn.h>
   
   typedef isdnDword_t     isdnNCCI_t;

Description

The isdnNCCI parameter identifies a logical connection. The NCCI (Network Control Connection Information) is given by the ISDN driver during the creation of a logical connection. Depending on the layer 3 protocol selection (for example, ISO8208), it is possible to have multiple NCCIs based on one PLCIs (Physical Link Connection Identifier).

The format for isdnNCCI is:

NCCI PLCI Ex./ Int. Controller

31 16 8 7 6 0

NCCI	PLCI	Ex./ Int.	Controller
31 16	8	7	6 0

This type is used by:

ISDN_CONNECT_B3.ISDN_IND(D7isdn)
ISDN_CONNECT_B3.ISDN_RESP(D7isdn)
ISDN_CONNECT_B3_ACTIVE.ISDN_IND(D7isdn)
ISDN_CONNECT_B3_ACTIVE.ISDN_RESP(D7isdn)
ISDN_CONNECT_B3_T90_ACTIVE.ISDN_IND(D7isdn)
ISDN_CONNECT_B3_T90_ACTIVE.ISDN_RESP(D7isdn)
ISDN_DISCONNECT_B3.ISDN_REQ(D7isdn)
ISDN_DISCONNECT_B3.ISDN_CONF(D7isdn)
ISDN_DISCONNECT_B3.ISDN_IND(D7isdn)
ISDN_DISCONNECT_B3.ISDN_RESP(D7isdn)
ISDN_DATA_B3.ISDN_REQ(D7isdn)
ISDN_DATA_B3.ISDN_CONF(D7isdn)
ISDN_DATA_B3.ISDN_IND(D7isdn)
ISDN_DATA_B3.ISDN_RESP(D7isdn)
ISDN_RESET_B3.ISDN_REQ(D7isdn)
ISDN_RESET_B3.ISDN_CONF(D7isdn)
ISDN_RESET_B3.ISDN_IND(D7isdn)
ISDN_RESET_B3.ISDN_RESP(D7isdn)

Bitfields

The following bitfields are supported:

ISDN_NCCIMSK_NCCI: 0xffff0000: NCCI
ISDN_NCCIMSK_PLCI: 0x0000ff00: PLCI
ISDN_NCCIMSK_EXT: 0x00000080: 1=External, 0=Internal
ISDN_NCCIMSK_CTLR: 0x0000007f: controller

References

Intro(D4isdn), Intro(D7isdn)

``SCO ISDN adapter drivers'' in Developing MDI network adapter drivers.