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In my house CallerID phone manual there was an option like the date and time can be set when CallerID is active and for a particular type (I am not able to recall whether it was mentioned as FSK or DTMF).<br />
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I would like to know where can we find the full details of what this FSK or DTMF stands for and how to find out whether my telephone exchange (Chennai BSNL) is what type. I called my CustomerCare but they are unable to reply in that.<br />
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Admin/Moderator: I could'nt judge which TA would be appropriate for this question and hence I am requesting you to kindly help me out in deciding the most appropriate TA and move this question over there since I feel that this would be a useful information, once responses are recieved to this question.
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In my house CallerID phone manual there was an option like the date and time can be set when CallerID is active and for a particular type (I am not able to recall whether it was mentioned as FSK or DTMF).

I would like to know where can we find the full details of what this FSK or DTMF stands for and how to find out whether my telephone exchange (Chennai BSNL) is what type. I called my CustomerCare but they are unable to reply in that.

Admin/Moderator: I could'nt judge which TA would be appropriate for this question and hence I am requesting you to kindly help me out in deciding the most appropriate TA and move this question over there since I feel that this would be a useful information, once responses are recieved to this question.

FSK and DTMF

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