Copyright © Dr Robot Inc. 2005
15
4. For Retrycounter, enter the number of times the Lantronix unit should try to make a good
network connection to a hostlist entry that it has successfully ARPed. The range is 1-15, with the
default set to 3.
5. For Retrytimeout, enter the number of seconds the unit should wait before failing an attempted
connection. The time is stored as units of milliseconds in the range of 1-65535. The default is 250.
c) Datagram Type
Directed UDP
When selecting this option, the prompt requests the Datagram
type. Enter 01 for directed or broadcast UDP.
When the UDP option is in effect, the unit uses UDP
datagrams to send and receive data.
d) Modem Mode
In Modem (Emulation) Mode, the unit presents a modem interface to the attached serial device. It
accepts AT-style modem commands, and handles the modem signals correctly.
Normally, there is a modem connected to a local PC and a modem connected to a remote machine. A
user must dial from the local PC to the remote machine, accumulating phone charges for each
connection. Modem Mode allows you to replace modems with WFS802gs, and to use an Ethernet
connection instead of a phone call. By not having to change communications applications, you avoid
potentially expensive phone calls.
To select Modem Mode, set the Connect Mode to C6 (no echo), D6 (echo with full verbose), or D7
(echo with 1-character response).
Note:
If the unit is in Modem Mode, and the serial port is idle, the unit can still accept network TCP
connections to the serial port if Connect Mode is set to C6 (no echo), D6 (echo with full verbose), or D7
(echo with 1-character response).
Without Echo
In Modem Mode, echo refers to the echo of all of the
characters entered in command mode; it does
not
mean to
echo data that is transferred. Quiet Mode (without echo)
refers to the modem
not
sending an answer to the commands
received (or displaying what was typed).
Full Verbose
The unit echoes modem commands and responds to a
command with a message string shown in the table below.
1-Character
Response
The unit echoes modem commands and responds to a
command with a single character response.
Table V.8. Modem Mode Messages
Message
Meaning
Full Verbose
OK
Command was executed without error
CONNECT
A network connection has been established
NO CARRIER
A network connection has been closed
