Gary wrote: > Joshua Layne wrote: > >> What frequencies would this radio support? (850,900,1700,1800,1900,2100) >> (1700 and 2100 are data only) >> What data standards? EDGE? UMTS? HSDPA? and on which of the above >> frequencies? >> >> > > Quad band phones are more common than they used to be but GPRS, even > with EDGE, is too slow to carry VoIP traffic. At work, we sell equipment that can do VoIP in under 20 KB/s, which is less than what GPRS is capable of. Also, digital cell phone voice is already in packets. It wouldn't take much to add an IP header to it.
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