Here is the CiviCRM Extension build using MySMSMantra which adds an indian SMS gateway within CiviCRM.
After installing this extension you just have to select the sms service MySMSMantra from SMS Provider and configure the settings. After that you are ready to send sms.
To download the extension go to:
If you are new to CiviCRM Extension you can get help about extensions from:
If you need any help configuring the same, feel free to reach us