ATD4_CHTYPE( )

Description | Cautions | Example | Errors

Name:	int ATD4_CHTYPE(devh)
Inputs:	int devh	channel descriptor
Returns:	channel type -1	channel type information if success (see below)
Includes:	D42LIB.H
Mode:	synchronous
Supports:	D/42-SL, D/42-SX, D/42-NS, D/42-NE2

Description

The ATD4_CHTYPE( ) function returns the D/42-xx channel type of the queried device.

Channel Type	Description
TYP_SL	for the D/42D-SL
TYP_SX	for the D/42D-SX
TYP_NS	for the D/42-NS
TYP_NE2PBX	for the D/42-NE2 used with the NEC NEAX 2000 IVS or NEAX 2400 IMS PBX
TYP_NE2KTS	for the D/42-NE2 used with the NEC Electra Professional Level II KTS
TYP_NE2	for other or unknown D/42-NE2 boards
TYP_NONE	for non-D/42 boards

Parameter	Description
devh:	specifies the valid channel device descriptor obtained by a call to dx_open( )

Cautions

None.

Example

void main(void)  
	{  
	int		devh;  
	int		rc = 0;  
	/* Open Channel Device */  
	if ( (devh = dx_open("dxxxB1C1",NULL))==-1)  
	{  
	printf("Error dx_open( )\n");  
	exit(-1);  
	} /* End dx_open */  
	/* Check Channel Type */  
	if ( (rc = ATD4_CHTYPE(devh))== -1)  
		{  
		printf("Error ATD4_CHTYPE( )\n");  
		dx_close(devh);  
		exit(-1);  
		}  
	printf("Channel Type = %d\n",rc);  
	dx_close(devh);  
	}	/* End main */

Errors

If this function returns -1 to indicate a failure, use ATDV_LASTERR( ) and ATDV_ERRMSGP( ) to retrieve one of the following (most common) errors. For a complete list of error codes and definitions, refer to Appendix C.

ED42_FWREQFAILURE	Firmware error
ED42_BADDEVICE	Invalid or wrong device handle
ED42_INVALARG	Illegal argument in function
ED42_UNKNOWNBOARD	Unknown D/42 board type
DXLIB_INVNRB	Internal voice library error

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