Chapter 6
Tools
Configuration
4460 GSM System Option and 4468 EDGE System Option
Version 12.20
209
TCP/IP Troubleshooting
1
The network connection does not appear to work at all.
– Ensure that the network card is installed when you switch on the Willtek
4400. You may remove and re-install the same PCMCIA card once the
4400 has booted (only relevant for serial numbers below 0911001).
– Check if the Willtek 4400 sounds a double-beep while booting. If it does,
it found the network card; if not, the PCMCIA card may be defective
(only relevant for serial numbers below 0911001).
– Check if the cables are tightly connected to the LAN port on the back of
Willtek 4400 and to the LAN wall outlet.
– Ensure that the PC that tries to connect to the Willtek 4400 supports the
TCP/IP protocol stack. When a network card is installed, some versions of
the Microsoft Windows operating system default to another protocol
such as NETBEUI. Windows can run several protocol stacks simulta-
neously, so installing the TCP/IP stack usually does not affect other
network connections and applications.
– check whether the IP address entered is valid and not already in use by
another device within the same LAN. You can check this with any
Windows PC, connected to the same subnet/LAN: Open a command shell
box (usually under Start-Programs-Accessories) and enter the following
command line:
ping <address>
where <address> is the IP address of
your Willtek 4400.
The ping should time out if the Willtek 4400 is switched off, but there
should be responses from your Willtek 4400 if it is up and running. If
there are pings while the Willtek 4400 is switched off, there is another
device (such as a PC or another test set) on the LAN using the same IP
address. In this case, modify the IP address of one of the devices.
If there is no ping even when the Willtek 4400 is switched on, the IP
address is not valid in this subnet or LAN, or the 4400 is not properly
connected to the network (check cabling).
2
I can enter a new IP address, but the Willtek 4400 does not respond to
messages over the ethernet connection.
After making changes to the IP parameters, they are only used after reboo-
ting the Willtek 4400.
NOTES
– As the Willtek 4400 is not aware of the local DNS (domain name server)
IP address, you need to provide an IP address (in the a.b.c.d format)
rather than a symbolic computer name.
– This entry field only allows for mounting one disk. If you need to access
several server disks from a RAPID! program or from a remote control
application (via GPIB or TCP/IP), you can mount more than one disk from
your application program.
– To access any remote computer, that computer must grant access rights
for the appropriate service, e.g. if you want to write data to a disk on the
LAN, that computer’s operating system must be set up to grant write
access to all users for the respective directory on that disk.
