How to redeem points by SMS?

Taking telecommunications as an example, China Telecom uses SMS to exchange points for phone bills as follows:

1, 1000 points exchange 10 yuan directly recharges the electronic card, and edit the short message DHHF 10 to 100 1688 or181kloc.

2.2000 points are exchanged for 20 yuan Direct Charge Electronic Card, and the short message DHHF20 is edited to 100 1688 or118114;

3.3000 points are exchanged for 30 yuan direct charge electronic card, and the short message DHHF30 to 100 1688 or1114 is edited;

4.5000 points are exchanged for 50 yuan Direct Charge Electronic Card, and the short message DHHF50 rpm 100 1688 or118114 is edited;