Skype data rate consumption ?

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I have 3G connection with limited data so I wonder how much data skype on diamond would consume in standby mode and while talking ? I found some data but its for normal Skype I assume MobileSkype works bit different ?

Heres a snap of normal Skype data
As we know Skype is made to pass the calls of those users who are behind restrictive NAT/Firewalls through the (random) computers of other Skype peers/users called "relay nodes".
This puts extra burden on those who connect to the Internet without router/NAT, as their computers and network bandwidth may be used to route the calls of other users. The selection of intermediary computers is fully automatic, with individual users having no option to disable such use of their resources. There is no special "relay node" status, it's just that the computer of a "relay node" will be used by those in need when necessary.

We can see which codec is used by Skype by enabling the "technical info" into Menu-> Options ->Advanced and check it.
Then during a call, hover your mouse over the nickname/image of the person.

Measured with Netstat Live (http://www.analogx.com/contents/down...etwork/nsl.htm)
the bandwidth consumption is:
iSAC -> 6,4 (6.4) kilobytes per second = 51,2 kbits/sec
iLBC -> 3,7 (3.7) kilobytes per second = 29,6 kbits/sec

So for iLBC we have this:
upload 3.7KBytes + download 3.7KBytes = 7.4KB/sec
7.4 x 60sec = 444KB/min x10min = 4440 : 1024 =4.33MB i.e.
10 min = 4.33MB of bandwidth trafic with iLBC
60 min = 25.98MB
1GByte = 1024MB : 25.98 = 39.41 -> let's say 40 hours.
So 1GB is enough to call 40hours with Skype.
Nobody can tell how much bandwidth Skype will waste if left running several hours every day on a computer that is not behind a router/NAT.
If a person is running Skype 8hours a day then for 22 days = 176 hours.
This means that during 176 hours Skype can passes the calls of other persons through its own computer and wasting the limited bandwidth.