DEFINITY ECS Release 8.2
Administrator’s Guide
555-233-506 Issue 1
April 2000
Screen reference
580Data modules
17
DLC Option Settings
The following provides additional information on the option settings for DLCs
when used with the following types of devices:
■Printers
■Non-intelligent terminals
■Data terminals and personal computers
■Host computers
■Information Systems Network (ISN)
Printers
A DLC port with a companion ADU, when attached to a printer, usually
terminates a data call. Therefore, in this connection, the printer is the endpoint
device. The originating device may be attached to a DCP mode 2 data module
(such as the MPDM) or the DLC. A Z3A ADU extends the range of the EIA 232C
connection.
When a receive-only printer (or any printer that does not gen e rate the Transmit
Data and DTR leads) is used, the ADU must be powered from a small
plug-mounted transformer (2012D, or equivalent) connected to p ins 7 an d 8 of the
modular jack. (Refer to ADU User Manual for details.)
An ADU cannot be used if the printer has hard ware flow control using the Clear
To Send (CTS) lead. An ADU can be used, however, if the printer is using
software flow control.
A printer connected to a DLC is usually assigned as a line. Table 7 lists the option
settings for printer connections.