I think the DN11 had several options available, but don't recall much about
them. I have one left if you need a look at it.
Paul
On Tue, Jun 4, 2019 at 9:57 PM Phil Budne via cctalk <cctalk at classiccmp.org>
wrote:
See the v6 dn (IV) man page:
http://man.cat-v.org/unix-6th/4/dn
NAME
dn - DN-11 ACU interface
DESCRIPTION
The dn? files are write-only. The permissible codes are:
0-9 dial 0-9
: dial *
; dial #
- 4 second delay for second dial tone
= end-of-number
The entire telephone number must be presented in a single
write system call.
It is recommended that an end-of-number code be given even
though not all ACU's actually require it.
....