Int 6B/AH=18h

AH = 18h AL = virtual circuit number CX = number of characters to send ES:BX -> buffer containing characters to be sent

Return:
CF clear if successful CF set on error ???

Note: This function is also supported by TelAPI, which always returns CF clear and AL=30h

See Also: AX=0000h - AH=12h - AH=19h

Category: Serial I/O - Int 6Bh - N