Serial Port Specifications
Introduction
5-4
WaveLAN/EC-S User’s Guide
network as the WaveLAN/EC-S and is running Telnet daemon
software.
At this time, there are only two commands that the telnet prompt
recognizes; help and open.
help - provides a short on-screen instruction about the
commands.
open - takes one mandatory argument, which is the IP
address of the machine to connect to. It also takes one
optional argument; the TCP port number to open the
connection on. If the port number is omitted, the default value
of 23 is used.
There are some configuration options for Telnet, such as forcing a
destination IP address and offering a connect prompt. These
features are designed for extending dumb terminals into Internet
terminals while setting restrictions on the destination of the
connection.
LPD
5
LPD is a printer driver protocol used mainly by UNIX based
systems. This is uni-directional protocol: data received on the
network connection will be forwarded via the serial port. Data
received on the serial port with this protocol is ignored.
A WaveLAN/EC-S configured to use the LPD protocol can buffer
up to approximately 32K of data from the network. The document
is printed while it is being received on the network.
To use this protocol, you must have a UNIX or Windows NT
system (or other operating system that supports LPD) with a
printer configuration set up to use the WaveLAN/EC-S as a remote
host.