BSNL One India Plan to General Plan

Recently i went to BSNL customer center for applying for a broadband. I had shifted recently to BSNL one India Plan. And now i came out with the following calculation:

Type: Pre-paid
Plan Charge : 880
Talk time : 550
Effective call rate (STD/Local): Rs 1.6/-

This above calculation assumes max call per month is 550.and if it above (where charging is done by top-up) then the effective call rate will come down.

There is also a 5000 pre-paid plan and durine festive season we get a talk time of 7500
Type: Pre-paid
Plan Charge : 5600
Talk time : 7500
Effective call rate(STD to BSNL Phones): Rs 1.5/-

And as India has at least one festival every quarter and the 5000 plan become operational, as you can see above the latter plan is better.

So now how do we shift from One India Plan back to the second (general plan) send:

MGEN to 3733.

So think twice before taking One India and if any time you find that this plan is uneconomical shift to the general plan.