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Global Call IP Technology Guide — November 2007 477
Dialogic Corporation
An IPT network device (iptBx) can also used for host LAN disconnect alarms. Note that all other
Dialogic
®
Global Call API alarms for IP are reported on IP Media (ipm) devices, not IPT network
(ipt) devices.
Note: Applications should avoid closing and re-opening devices multiple times. Board devices and
channel devices should be opened during initialization and should remain open for the duration of
the application.
For Windows
®
operating systems, the SRL function sr_getboardcnt( ) can be used to retrieve the
number of IPT board devices in the system. The class_namep parameter in this context should be
DEV_CLASS_IPT. The SRL function ATDV_SUBDEVS( ) can be used to retrieve the number of
channels on a board. The dev parameter in this context should be an IPT board device handle, that
is, a handle returned by gc_OpenEx( ) when opening an IPT board device.
For Linux operating systems, the SRL device mapper functions SRLGetAllPhysicalBoards( ),
SRLGetVirtualBoardsOnPhysicalBoard( ) and SRLGetSubDevicesOnVirtualBoard( ) can be
used to retrieve information about the boards and devices in the system.
8.3.19 gc_RejectInitXfer( ) Variances for IP
This function is only available if the call transfer supplementary service was enabled via the
sup_serv_mask field in the IP_VIRTBOARD structure when the board device was started.
Variance for H.323
The parameter parmblkp is ignored for IP technology and should be set to NULL.
The gc_RejectInitXfer( ) function can be used at party C only on the receipt of
GCEV_REQ_INIT_XFER.
Four of the six Dialogic
®
Global Call API reasons are supported and result in the following
ctIdentify error values signaled back to party A. Values GCVAL_REJREASON_INVADDR and
GCVAL_REJREASON_INSUFFINFO cause the function to fail with a subsequent error code of
IPERR_BAD_PARAM.
Table 36 lists the ctIdentity error codes that are signaled to party A based on the value of the reason
parameter passed when the gc_RejectXfer( ) function is called.
Table 36. ctIdentify Errors Signaled From gc_RejectInitXfer( ) to the Network
GC Value ctIdentify Error
GCVAL_REJREASON_INSUFFINFO N/A (will return invalid parameter error)
GCVAL_REJREASON_INVADDR N/A (will return invalid parameter error)
GCVAL_REJREASON_NOTALLOWED suppServInteractionNotAllowed
GCVAL_REJREASON_NOTSUBSCRIBED suppServInteractionNotAllowed
GCVAL_REJREASON_UNAVAIL notAvailable
GCVAL_REJREASON_UNSPECIFIED unspecified