送交者: enable 于 2004-12-30, 18:40:29:
回答: IP is the only one we need to concern here, TCP doesn't deal with 由 steven 于 2004-12-30, 15:48:09:
from Telecom infrastructure point of view, they all digital packets. then what is advantage of Voice/IP over normal telephone service. since voice/ip needs QoS as well, I didn't see any cost advantage over traditinal telephone. Why people are still talking about this and unversity undergraduate students are still doing this research as final project.