Remote programming GSM

[bytehane]

I need somekind of remote connection for e.g. Simatic S//300. This is for temporary maintenance connection

I found specs e.g. of Maestro UR5 GSM modem.
There is Ethernet and RS-232 and also USB.

Has anyone used this? or some other corresponding device.
Is that USB- connection transparent.

I want connect my laptop to remote PLC. I want edit Simatic- program (i have USB-MPI- converter and maybe i have to place that in connection to that remote PLC, with somekind of GSM-Modem.
Also there is OP-277 Panel, which I can program with Ethernet..

I'm living in Finland, so maybe tehe is some differensies witg GSM- standards..

Any recommendations for this?
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[Jason P]

I'm currently working with a GSM modem from Phoenix Contact but in North America. They have ones for overseas as well though.

Hope this link works

Industrial modems