On Friday 17 Apr 2009, Dr. Sharukh K. R. Pavri. wrote:
> I am using MTNL's Triband combo offer which gives 600 mb download a
> month. This has been upped from 400 mb just last month.

It is quite likely there is a glitch in the MTNL billing system.
I just got my bill yesterday for March.  Starting from March, I had 
switched to the 512 Kbps unlimited plan in which the CPE rental of Rs. 
50 is waived.  Yet, lo behold there is a line item for CPE rental Rs. 
50!  

Their punch line "MTNL hai to sahi hai."

> I usually run a check with knetworkmonitor and gkrellm and there
> would always be a small discrepancy between the usage shown on my
> machine and that shown by mtnl, where mtnl would always show slightly
> lower usage than on my machine.

You can capture the total packet traffic on eth0 from the output of 
ifconfig when you reboot/poweroff 

<transcript>
ifconfig eth0
eth0      Link encap:Ethernet  HWaddr 00:1F:D0:E9:15:61  
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:10488 errors:0 dropped:0 overruns:0 frame:0
          TX packets:9436 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:10218799 (9.7 Mb)  TX bytes:1105652 (1.0 Mb)
          Interrupt:252 Base address:0xc000
<transcript>

Capture the line RX bytes and TX bytes into a table and sum it up at the 
end of the month for your totals.  (write a shell script and include it 
in the shutdown/reboot process)

HTH,
Arun Khan

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