36  * Routines for dialing up on DN-11
41 static pid_t child = -1, dn;  variable
54 	if ((dn = open(acu, 1)) < 0) {  in dn_dialer()
63 		close(dn);  in dn_dialer()
77 		nw = write(dn, num, lt = strlen(num));  in dn_dialer()
90 		close(dn);  in dn_dialer()
94 	tcgetattr(dn, &cntrl);  in dn_dialer()
96 	tcsetattr(dn, TCSANOW, &cntrl);  in dn_dialer()
101 	close(dn);  in dn_dialer()
136 	if (dn > 0)  in dn_abort()
137 		close(dn);  in dn_abort()