What are the Indian Telephones call progress tones?

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mcs51

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cm8880 and 8051

I m currently involved in developing a 8051 interface to CM8880 DTMF Tx/Rx . I m able to encode and decode DTMF but i m not able to obtain the call progress pulses properly and interpret them. Since call progress tones are region specific , i dont know the standards for Indian Telephones . Can someone help me out on this ...
 

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