It appears that the BSNL connection is being used for hacking the laptop of the google competitor, some kind of malware is downloaded on the Micromax laptop if the connection is used in the morning. On 5 April 2018, the Airtel connection was very slow in the evening, so the BSNL sim was used. It was also used in the morning on 6 April 2018.
In the afternoon at around 1.30 pm, when the micromax laptop was used with a dlink modem, some kind of software appears to be automatically installed on the laptop . After that the dlink modem is not functioning ,the sim card is not recognized. The only way to make the connection work is by uninstalling the dlink modem, and installing the modem again. It appears that some changes are made in the registry
It would be interesting to find the name, designation of the ntro employee who is hacking the micromax laptop intentionally using the bsnl sim card, the software he is using or changes in the configuration. Everyday some time is wasted