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To: Keith Hankin who wrote (4343)	1/16/1999 10:24:00 PM
From: Jing Qian	Read Replies (1) \| Respond to of 29970

>>Actually, it is my understanding that ADSL is more suitable for voice than cable because it is more able to deliver on quality of service. While transfering data might be fine with slight interruptions, this is not acceptable in real-time voice transmission.<< No, I don't mean the traditional analog voice. Who will need analog voice 2-3 years from now? It's ancient technology. I mean digital voice embedded in MEG2 packets encapsulated with IP packets. VOIP is going to shovel the traditional analog voice carriers to grave. GTE, PacBell or SBC are those traditional analog voice carriers. All it needs is bandwidth to deliver the QoS. ATT is building that fiber optic based backbone for that purpose. ADSL may be suitable for analog voice, but not digital voice, ie, MPEG2 based VoIP technology. Do you know why digital voice is important? Because IP packet based voice can be decoded with any microprocessor based device. But Analog voice can only be heard by a telephone set. Voice over IP can be heard, analyzed and understood by a machine. So in the future you can call home to your refrigerator, with a DSP processor that decode the MPEG2, it will understand your instruction to raise its temperature a bit. That's why Cable will win. >>I don't think that support for this type of bandwidth with good enough quality will be available for at least 5-10 years. Even so, ADSL and VDSL can support it, at least for those who are close enough to their CO, and the quality will be better than cable because each DSL connection does not have share the same connection to their CO as does a cable solution.<< 5-10 years? you are kidding. In my mind, 3 years will make everything different. We are in a stage of explosive growth of internet related technologies. Do you know that Cisco is betting high on the Cable to make every devices in our home IP compatible. AT&T is already starting to spend billions to upgrade TCI's cable. In fact Cable doesn't have the 3 mile proximity requirement that xDSL network must sticks to. When users grow, all they have to do is to split the nodes. But ADSL is not so scalable. When users grow, ADSL will actually be bogged down because this technology has to reserve bandwith for every one, even if the person dosen't use it.