INT 2F - Communicating Applications SpecificationDCA and Intel's standard programmatic interface for sending and receiving FAXes via any of a number of internal FAX boards. - GET EXTERNAL DATA BLOCK
	AX = CB0Eh
	DS:DX -> 256-byte buffer for external data block (see #03049)
Return: AX = 0000h successful
	    DS:DX buffer filled
	AX < 0	   error code (see #03048)


Format of CASsee Communicating Applications Specification external data block:
Offset	Size	Description	(Table 03049)
 00h	BYTE	CASsee Communicating Applications Specification major version
 01h	BYTE	CASsee Communicating Applications Specification minor version
 02h 68 BYTEs	ASCIZA NUL-terminated ASCII string.	The ASCIZ string "ABC" consists of the four bytes 41h, 42h, 43h, and 00h.  Unless otherwise specified, maximum lengths given in the interrupt list do not include the terminating NUL. path to directory containing CASsee Communicating Applications Specification software, ends in slash
 46h 13 BYTEs	ASCIZA NUL-terminated ASCII string.	The ASCIZ string "ABC" consists of the four bytes 41h, 42h, 43h, and 00h.  Unless otherwise specified, maximum lengths given in the interrupt list do not include the terminating NUL. name of current phonebook (in CASsee Communicating Applications Specification directory)
 53h 13 BYTEs	ASCIZA NUL-terminated ASCII string.	The ASCIZ string "ABC" consists of the four bytes 41h, 42h, 43h, and 00h.  Unless otherwise specified, maximum lengths given in the interrupt list do not include the terminating NUL. name of current logo file (in CASsee Communicating Applications Specification directory)
 60h 32 BYTEs	ASCIZA NUL-terminated ASCII string.	The ASCIZ string "ABC" consists of the four bytes 41h, 42h, 43h, and 00h.  Unless otherwise specified, maximum lengths given in the interrupt list do not include the terminating NUL. default sender name
 80h 21 BYTEs	ASCIZA NUL-terminated ASCII string.	The ASCIZ string "ABC" consists of the four bytes 41h, 42h, 43h, and 00h.  Unless otherwise specified, maximum lengths given in the interrupt list do not include the terminating NUL. CCITT identification of fax device
 95h 107 BYTEs	reserved