As a rule I don't post on technical issues on this blog, but since I had a lot of trouble connecting to Vodafone India's Mobile Connect service, I hope this will be of help to folks out there. I registered for the service but it simply didn't work. Repeated google searches couldn't explain why I was constantly getting an error registering on the network, with "Error 31: A device attached to the system is not functioning" being the culprit. Calling their helpline was useless. Their support staff seemed like they had not been trained to deal with it. Finally I brought my notebook computer into a vodafone store and they suggested this line in the modem initialization commands:
It fixed the problem right away. They don't seem to mention this anywhere on the vodaphone site, which is odd.