.TH DN 4 .UC .SH NAME dn \- DN-11 ACU interface .SH DESCRIPTION The files .IR cua0 , etc. refer to the units of a DN-11 ACU interface, and are write-only. The codes for the phone numbers are: .TP 0-9 dial 0-9 .br .ns .TP .B : dial * .br .ns .TP .B ; dial # .br .ns .TP \- 2 second delay for second dial tone .br .ns .TP < end-of-number .DT .PP It is recommended that an end of number code be given even though not all ACU's actually require it. .SH "SEE ALSO" cu(1), uucp(1C) .SH FILES .ta 2i /dev/cua0 (normally connected to /dev/cul0).