दूरसंचार विभाग
1. Please provide the time in months , till when a CDR record of a number is being kept saved by Bharti Airtel Limited in general .
2. Please provide the time in months , till when a CDR record of a number is being kept saved by Reliance Jio Infocomm Limited in general .
3. Please provide the time in months , till when a CDR record of a number is being kept saved by Bharti Airtel Limited in Jharkhand state in specific .
4. Please provide the time in months , till when a CDR record of a number is being kept saved by Reliance Jio Infocomm Limited in Jharkhand state in specific .
5. Please provide the steps or a way to get the CDR of a particular number (may or may not be personal , for both these cases) from Bharti Airtel Limited and also from Reliance Jio Infocomm Limited
NOTE: CDR stands for Call Detail Record.