For an end-user, I would estimate around 500KB to 1MB a month nowadays.

It really depends on the cellular coverage, and rounding-up of the cellular provider. The way it works is that a GPRS connection behaves like a VPN tunnel. The module creates the connection, and sends/receives traffic over that connection. If the connection dies, the cellular provider rounds-up and charges per chunk of data (e.g. 10KB, 100KB or in some cases 1MB!), with a minumum of 1 chunk.

So, if you are in poor cellular coverage area, the module makes a GPRS connection, sends perhaps 100 bytes of data, then the connection is lost (and the cellular provider who gave you the poor coverage, rounds up that 100 bytes to 10KB!).

[ As an aside, that is why OVMS now has lots of code in net.c to try to maintain a GPRS connection and only give up on it after several minutes of trying. We used to just tear down GPRS and bring up a new connection, but that consumed too much cellular data. ]

The server tracks protocol-level data, and that is typically 10KB a day (perhaps 310KB a month). Actual cellular-level data is some multiple of that - perhaps 2 to 5 would be reasonable to expect for most users.

Regards, Mark.

On 19 Jan, 2013, at 8:09 PM, Michael Balzer <dexter@expeedo.de> wrote:

Nikolay,

I normally have about 2-3 MB per month now, I guess my maximum would be around 5 MB.

Note: that includes GPS logging (streaming) activated, and I'm driving about 600-700 km per month.

I also currently use about 50-100 SMS per month, but I could already cut that down to near 0 by disabling the SMS channel, as I send all important notifications to the App as well.

Regards,
Michael


Am 18.01.2013 17:04, schrieb Nikolay Shishkov:
I just got off the phone with Telenor Telematics and they were very willing to help with telematics SIM card for the OVMS.
Questions came up about the traffic used and number of SMSes. 
I remember I read some statistics for couple of days of usage, but I need some very rough averages per month. 
Can some of you guys that have been using the system for some time put some KB numbers, and if you like comment on your usage.
Thanks,
Nikolay


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