Upstream Transmission
The introduction of fiber trunking is the first step in cable TV networks' evolution to full-service RBB networks. The second major step is to create an upstream transmission capability in the HFC plant so that subscribers can send data as well as receive it. The termsupstream, reverse, and return path are used interchangeably to describe traffic and paths that go from the consumer to the head end.
Existing Return Paths
Previously, many return path amplifiers were installed by cable operators to meet franchise requirements, such as video from the city council chambers, for management communications for intelligent amplifiers and to poll set-top units to collect impulse pay-per-view (IPPV) billing information. IPPV ...
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