Landline telephone - incoming call detail record - trai ?


I tried to find information from the TRAI website, but in vain, and then my laziness prompted me to post a query on this forum - hoping someone would have already found this information ;)

As per the current TRAI regulations, for how long are the landline telephone service providers supposed to maintain the call detail record. Are the regulations different for BSNL?


Senior Partner

@ Author

You are right TRAI gave direction to all telecom operators to implement CDR based billing by 3rd.

March 2004 !

B. As per TRAI guidelines service providers are required to maintian data for 13 months and beyond  that they may and may not and is purely their internal managment policy but then people connected  with Court have found 3 years old dats from specific provider so if guidelines are to be read down  then I say it is 13 months as per TRAI.

C. However in Bharat Sanchar Nigam Limited (BSNL) has come up with a scheme that will enable their  Landline and
Mobile subscribers to check call details on the website over the Internet. One just  needs to log on to the new website of BSNL to be launched by the state-owned telecom operator soon. At present, the facility is limited to Mobile Landline phone users of the Kolkata circle of the  BSNL. But, the scheme named Call Detail Record (CDR) system will enable both Landline and WLL Mobile  subscribers of other circles of BSNL to avail the services.

All subscribers will be provided with a customer identification number (customer Id), which they  will have to key in at the appropriate place on the web page.

Within a few minutes details of every call  including call duration, numbers dialled, rate of each  call and total charge of the calls  will be displayed.Call charges would also get adjusted  automatically with a change in tariff or any other schemes. Four different cities including Kolkata  (at Salt Lake Telephone Exchange), Pune, Chandigarh and Hyderabad have been chosen to start the CDR system.

D. This was their long forgotten Circular:

Introduction of CDR based Customer Care and Convergent billing system.

Dear Customer

In order to serve you better, BSNL is introducing New System in the field of customer services, billing and web self care from January 2010 onwards. The system is called CDR based Customer Care and Convergent billing system, in short CDR based Customer Care system. The billing system so far being used is SSA centric where as the new system is Zonal one covering Madhya Pradesh, Maharashtra, Gujrat and Chattisgarh states.

The system will be able to offer you various tariff plans which you might be enjoying in mobile services. The new tariff plans will be announced shortly. As the system caters to complete Zone, certain changes are required in the procedures currently

deployed. These changes will be done internally without causing any inconvenience to you. In this process we would like to share with you the changes that are likely to be implemented.

1. The billing is on rating the individual call detail records rather than on Opening Meter Reading (OMR) and Closing Meter Reading (CMR). The OMR and CMRs will not be printed in the bill now onwards.

2. The name of the Tariff Plan and Broadband Plan will be changed. But the tariff will remain same.

3. The number of free calls will now be offered as equivalent free usage amount in terms of Rupees.

4. Broadband plan charges will now be effective from the date of order instead of 1st of next month.

5. I) The bi-monthly bill covering December 2009 and January 2010 which is due in February 2010 is being issued in two bills i.e. one for the period of 1/12/2009 to 31/12/2009 based on OMR and CMR and is being issued in the first week of January 2010 under the existing CSMS system. The second bill for the period of 01/01/2010 to 31/01/2010 based on individual call details records (usages) will be issued in the first week of February 2010 under the new CDR system.

II) The next monthly bill covering January 2010 month will be issued in the first week of February 2010 based on individual call details records (usages) under the new CDR system.

III) The next bi-monthly bill covering January 2010 and February 2010 months will be issued in the first week of March 2010 based on individual call details records (usages) under the new CDR system.

6. If you are a customer who pays bill through Electronic Clearing Service (ECS) then you may have to change the mandate furnished to your bank with the new customer account number allotted to you through the bill issued under the new CDR system.

7. Your existing Consumer No. will be changed as Customer ID. In addition to that Billing Account No. will be allotted to you to maintain your Billing/Payment/Commercial transactions.

8. So far you are paying the dues against Bill, i.e., Bill-wise accounting was being followed. In the new system, payments made by you will be accounted against your Billing account. Any unpaid dues of a bill will be shown as Opening Balance in the Next Bill and will be added in the dues payable.

E. The delay in decision was due to BSNL's vast network and changes in the company's requirements and BSNL's Technical and
Development Circle located at Jabalpur came out with BILLING AND CUSTOMER CARE SYSTEM IN GSM NETWORK only on 1st. Aug. 2008 !!!!

Take: Yours is a academic query and before the next IPO of Google is announced next time do pray before "Google GOD Search box" to find solutions to such academic queries. Some enquires in legal portals should turn to commercial too as experts spend precious time answering to them don't you think?
{you is generic here}

Observation: Your is a good RTI question with reply announced in forum for other readers benefit!

Any commercial takers :-) 

Total likes : 1 times



Thanks for the response.

And if you (and here you is not generic - it is directed specifically at you) wish to be paid for your "expert advice" - then by all means you can create a website and have a paid-subscriber-only forum - and for all you know there might be takers. Unfortunately, this forum is not meant for such an activity.


Total likes : 1 times


Dear Sir, Can you give me some references where court gave some direction or order to Police to get call detail record of last 3 years or any Investigation agency submitted the call detail record of last 3 years as an evidance.






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