BNU files with telephone connection entries on the local system

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These files contain telephone connection entries on the local system venus.

Systems file: A Systems file on system venus contains the following entry for system merlin, including a phone number and a dialing prefix:
```
merlin Any ACU 1200 local8784 "" in:--in: uvenus word: mirror
```
System venus can call system merlin at any time, by using an ACU device at 1200 baud and logging in as user uvenus with the password mirror. The telephone number is expanded based on the code local in the Dialcodes file, and the device to be used is determined based on the Type and Class entries. BNU checks the Devices files for a device of type ACU and class 1200.
Dialcodes file: The Dialcodes file on system venus contains the following dial-code prefix for use with the number in the Systems file:
```
local 9=445
```
Given this code, the telephone number for system merlin in the Systems file is expanded to 9=4458784.
Devices file: The Devices file on system venus contains the following entry for the connection to system merlin:
```
ACU  tty1  -  1200  hayes \T
```
The port to be used is tty1, and the Dialer entry in the Dialer-Token Pairs field is hayes. The Token entry, \T, indicates that the telephone number is to be expanded by using a code from the Dialcodes file. BNU checks the Dialers files for an entry of a hayes dialer type.
Dialers file: The Dialers file that is used by the uucico daemon on system venus contains the following entry for the hayes modem:
```
hayes  =,-,  ""  \dAT\r\c OK \pATDT\T\r\c CONNECT
```
Note: The expect-send characters are defined in the Dialers file format.
Permissions file: The Permissions file on system venus contains the following entries, which specify the ways in which system merlin can conduct uucico and uuxqt transactions with system venus:
```
LOGNAME=umerlin REQUEST=yes SENDFILES=yes \
READ=/var/spool/uucppublic:/home/merlin \
WRITE=/var/spool/uucppublic:/home/merlin 
MACHINE=venus:merlin VALIDATE=umerlin REQUEST=yes SENDFILES=yes    \
COMMANDS=ALL \
READ=/var/spool/uucppublic:/home/merlin \
WRITE=/var/spool/uucppublic:/home/merlin
```
System merlin logs in to system venus as umerlin, which is a unique login for system merlin. System merlin can request and send files regardless of who initiated the call. Also, system merlin can read and write to the /var/spool/uucppublic directory and to the /home/merlin directory on system venus. System merlin can issue all commands in the default command-set on system venus.