Jun 4, 2007 #1 M mehdi_an Advanced Member level 4 Joined Jan 17, 2007 Messages 106 Helped 1 Reputation 2 Reaction score 0 Trophy points 1,296 Activity points 1,813 hi all i want know that in line phone dial up which modulation use ?
Jun 7, 2007 #2 A abhikohli Member level 2 Joined Jul 25, 2006 Messages 53 Helped 8 Reputation 16 Reaction score 2 Trophy points 1,288 Location India Activity points 1,652 Are u talking abt dial-up modem ? Many, depending on bps & protocol. Starting Simple FSK, BPSK to complex QPSK, QAM-16 or 256
Are u talking abt dial-up modem ? Many, depending on bps & protocol. Starting Simple FSK, BPSK to complex QPSK, QAM-16 or 256
Jun 24, 2007 #3 E eng_tamer Newbie level 5 Joined Jan 17, 2005 Messages 9 Helped 1 Reputation 2 Reaction score 0 Trophy points 1,281 Location Cairo , Egypt Activity points 49 Actually i don't know exactly but if you want to know review the dial up modem names / standards like V34 , V90 , V92 and read this ITU standards well to know what type of modulation is used Tamer , Egypt
Actually i don't know exactly but if you want to know review the dial up modem names / standards like V34 , V90 , V92 and read this ITU standards well to know what type of modulation is used Tamer , Egypt
Jun 26, 2007 #4 A alzomor Advanced Member level 2 Joined Jun 9, 2005 Messages 674 Helped 39 Reputation 78 Reaction score 8 Trophy points 1,298 Location Germany Activity points 6,406 Hi It was long time since we did that work, but as I remember it's QAM16 or QAM64 for V34 and V52 The best source of information is the ITU standards Salam Hossam Alz0omor www(.)i-g(.)org
Hi It was long time since we did that work, but as I remember it's QAM16 or QAM64 for V34 and V52 The best source of information is the ITU standards Salam Hossam Alz0omor www(.)i-g(.)org