Chase Research IOLAN+, Руководство пользователя и администратора

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Troubleshooting & Maintenance
Testing the port
The first thing to ascertain is that you can talk to the modem.
Check this by telneting to the port and attempting to obtain a
response from the modem. The command sequence is:
telnet elroy 10006
(port 6 on IOLAN elroy)
If the modem is Hayes compatible, type the AT command
and press the return key. The modem should respond with
OK if the echo settings are correct at the modem. If you are
unable to telnet to the port ensure that the port is set up
correctly and has been killed to save the changes in
configuration. Pay particular attention to flow control,
monitor DSR, monitor DCD, and access field.
Modem problems
Once you have a response from the modem, dial-out to a
known site and check that the correct responses are
returned. Remember that modems can change their bps rate
dynamically having made a connection but the IOLAN+ is
unable to do this. Make sure you’ve configured the AT
string in the
Remote Site Devices - Modem Configuration
field. Then kill the port.
B.4 IOLAN+ Still
Does Not
Communicate
A situation may occur which causes the IOLAN+ to
completely not function. Here are possible problems:
Kill the port
Try killing the port as it may be locked due to some situation
that is no longer obvious. Also, killing the port ensures that
any changes in the configuration will be acted upon.
Power cycling
Power cycle the device connected (if this is possible) as it
may be that it has locked, or the set-up within the device is
in error. Also try power cycling the IOLAN+ itself.