Trewmte,
Am sorry, I don't mean no disrespect to you or Ed. I considered that one must learn 'A' before he can get to 'Z', please forgive me.Noel.
No worries Noel, I didn't read your comments or take them as being disrespectful.
You are right, though, about learn A before Z. So you, too, offer useful help to koppite )
No problems men!
This forum is an awesome repository of educational information. In saying that I think the best scenario is when topics, once begun, stay on topic. That assures that the original poster and those seeking similar information get what they are looking for.
Greg and I may have gotten a bit off point from what was originally asked for and our "back and forth" exchange may have been better suited for "CDR's as evidence or Courtroom presentations?" At times I wonder if Greg really wants me to further explain what I say or is he playing devils advocate and wanting me to find the answer inside myself?
Regardless, it's Educational.
As far as the original question goes I am not aware of any online tutorials or webinars that would be helpful. Other than definitions you just have to get in there and work with the reports. And they do differ greatly from vendor to vendor.
Cheers!
I think the best scenario is when topics, once begun, stay on topic. That assures that the original poster and those seeking similar information get what they are looking for.
Yes, maybe, but koppite hasn't come back yet, so how do you know whether the OP has got something from this is or not?
Greg and I may have gotten a bit off point from what was originally asked for and our "back and forth" exchange may have been better suited for "CDR's as evidence or Courtroom presentations?"
You may think you got off topic, I didn't. I merely responded to the points you raised out of respect to you. But you've said it now, so there is no more that I can do.
The OP indicated searches had already been conducted. There was no limitation in the OP's post to suggest wanting just examples of CDRs but observe ways to consider them.
At times I wonder if Greg really wants me to further explain what I say or is he playing devils advocate and wanting me to find the answer inside myself?
Naahhhh… you're being far too deep Ed. I am merely highlighting to you collecting CDR examples is one aspect, knowing how to read and use them is entirely another.
Whether missed call information is available with the CDR data ?
Whether missed call information is available with the CDR data ?
I can only speak from experience but I cannot recall seeing an historical CDR containing this non-chargeable event where an incoming call wasn't answered with no further resources used. You will need to look at other network records for that information.
can you please elaborate on other data available in CDR to locate such events. i dont have any experience with CDR data
Bibinthomas - With respect to missed calls it depends on how the call was missed and if it made a connection with the recipient telephone or not. For the UK you may wish to refer to the Data Retention Regulations 2009 about unsuccessful call attempts http//
I have certainly obtained (within the UK) unsuccessful call information (as well as information pertaining to the connection ‘legs’) and using certain techniques and by requesting the appropriate records you can sometimes work out which have been unsuccessful.
However, the problem with CDRs is that every country will be different in the information they retain and how (and if) it will be accessible. Hence, if you are working in a particular country you will need to contact the respective network providers to discuss what information they may have available to you. In the UK, the availability of information is different for each network provider and it does also change over time so you have to keep up to date with it too.
The other thing in my experience of dealing with CDR cases in the UK is that if you do not ask for the information from the network provider then the likelihood is that you will not receive it (common sense really they are not mind readers!). Hence, they need specific requirement instructions (be that from the initial person requesting the records or a subsequent expert whom reviews the data and instructs that they require further evidence to be exhibited).
Koppite - I would recommend you start with understanding the Data Retention Regulations implementation in Ireland and to get your supervisor to contact the network provider(s) in Ireland to see if they would be willing to provide you information about the data they retain. With respect to how to analyse CDRs then such a topic would depend on what you are trying to achieve with your project. Have you thought of something specific that you are looking to evaluate or are you looking to develop a tool to analyse the data within them?
Kind regards
Sam Raincock
thanks trewmte & Sam Raincock. I am from India and as far as I know, there is no such specific act for data retention policy apart from individual department policies. So I will have to contact individual service providers for their retention policies and the sort of data available with them.
bibinthomas, Sam's reference to the Regulation 2009 is a useful guide but is for the UK, as she mentioned. Also the reference to unsuccessful call attempt, I have seen (eg in Hutchinson 3 call records) these before, is that what you were referring when you said "missed call"?
However, there are call record formats that have been design to assist operators exchange acceptable accounting records.
It is true that all service providers do not record or retain data the same. There is an old saying ”If it doesn't make money, it doesn't make sense." This is true for many companies. If an attempted call did not make a connection and there is no usage or billing fee for the attempt why would the service provider keep the data concerning the missed call? Some carriers may not even keep records of connected calls if they are not billable or chargeable.
Your questions may only apply only to missed calls, but if you have others as far as retention periods and what they can or cannot do I would suggest you come up with eight or ten questions. List them in an Excel format, check with the service providers in your area and update your list every 90 days or so.
There is no easy answer and most everything is carrier specific.