20
Connecting a printer for printing connection charges ¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢¢
You can connect any printer to the telephone
system’s RS 232C interface to print out con-
nection records. For connection, you need a
cable that corresponds to the pin assign-
ments given below (maximum length 3 m).
Your printer must be set as follows:
- 9600 baud
- 8 bits
- 1 stop bit
- no parity
To print out connection records, the printer
must be on all the time and must be con-
nected to the telephone system. The tel-
ephone system stores 2000 connection
records and the total connection charges,
even in the event of a power failure.
2
3
5
7
8
2
3
5
6
7
8
20
telephone system
(9-pole connector)
printer
(25-pole connector)
Figure 13: Printer cable pin assignments
