Nortel Networks Circuit Card - Manual (Page 692)

Page 692 of 906 NT8D41BA Quad Serial Data Interface Paddle Board
553-3001-211 Standard 3.00 August 2005
Applications
The NT8D41BA Quad Serial Data Interface paddle board is used to connect
the switch to a variety of communication devices, printers, and peripherals.
Any RS-232-C compatible device can be connected to either of the card’s two
serial ports.
The standard application for the paddle board is to connect the switch to the
system console. This can be either a direct connection if the console is located
near the switch, or through a modem for remote maintenance.
Bell 103/212 compatible dumb modems are recommended to connect a
remote data terminal. If a smart modem (such as a Hayes modem) is used,
configure the modem for the dumb mode of operation (Command
Recognition OFF, Command Echo OFF) before connecting the modem to the
asynchronous port.
The serial data interface connectors on the paddle board are not RS-232-C
standard DB-25 connectors. The NT8D84AA interface cable is used to adapt
the paddle board to a non-standard pinout DB-9 connector (normally located
on the I/O panel). The NT8D93 cable is then used to connect the non-standard
DB-9 connector to a peripheral that uses a RS-232-C standard DB-25
connector. See Figure 163 on
page 693 .