User guide

User Guide
13
If the PPP link works (i.e. you get an non-zero IP address in the screen above) but
you do not get a connection to Loggernet, check these points for calling out to
fixed IP addresses:
• That you are using the right IP and port setting in Loggernet to match
those assigned to you for the SIM.
• Make sure any local firewalls allow you to make outgoing connections
on the ports being used. (Some institutions limit you to standard ports)
• Make sure the service provider lets you use non-standard ports over
GPRS (a very few apply default firewalls – although normally only for
calls to the logger)
• Double check the Net Services settings for the Logger using Device
Configuration program.
If you are using a SIM with a dynamic address check these:
• Check the IP address of Loggernet used is correct – it needs to be a
public address (possibly redirected to the LN server by a router if the PC
is on an internal private network)
• That the router and PC firewall has holes opened for the logger to call
into. This requires low level configuration of the firewall which might be
Windows own firewall or third party firewall software running on the
machine.
• That the server port in Devconfig matches the port specified in
Loggernet.
• Check you have an up to date version of Loggernet..
You can also look in Loggernet’s Status/log tool to make sure Loggernet is
listening on the socket for call-backs. When a call-back is made you should see
activity in the log showing a connection is being made.