said by Nameless :If CRTC has approved CBB, then why user based charges varies for different tiers. To be specific, for all tiers user charge fee to TPIA should be fixed, 25/2, 35/3,....250/20, regardless. Because higher tiers pay more on CBB.
Fixed user charges are fixed charges that occurs regardless of user uses any bandwidth for not
The different costs between cable tiers is fairly easy to justify.
The node-level accommodations required to handle end-user traffic at 250Mbps each are not quite of the same scale as handling subscribers using only 25Mbps a piece. Cablecos would either need up to 10X smaller nodes or as many as 10X as many QAMs per node which means about 10X as many CMTS and possibly 10X as many HFC nodes to install in the field. This translates into drastically increased costs from severely reduced network cost-efficiency.
Costs of provisioning adequate bandwidth to individual nodes scale as a function of total bandwidth subscribed on said node and cablecos are allocating parts of that cost based on how much of a strain individual subscribers on different speed tiers can potentially put on it.
The curve is much flatter on xDSL because the uplink bandwidth is there regardless of what speed subscribers sign up for: there is 2-3Gbps of uplink shared between 48-96 ports and whatever is unused goes to waste. This would be like cablecos making cable segments spanning 96 subscribers and provisioning about 52 QAMs worth of data bandwidth regardless of how much internet bandwidth is being signed up for on it. That's between four and five times as many QAMs per subscriber as what most cablecos use today.
CBB is an additional fee for actual use of that bandwidth.
