Carriers worldwide are adopting RPR as their primary transport method for packet
traffic. One is TOKAI inc. a leading LPG company covering the area from Shizuoka
prefecture to Fukushima prefecture. This group company, established in 1950, currently
engages in many public utility businesses including LP gas, city gas, security,
telecommunication, and CATV.
Within the TOKAI group there is a telecommunication business. VicTokai is certified
to provide an optical fiber network from Tokyo to Osaka. TOKAI Inc. sells consumer
services over ADSL and FTTH and VicTokai sells enterprise services.
Using RPR Tokai and VicTokai offer ???partial guaranteed access??? which provides maximum
bandwidth when it is available and a smaller guaranteed bandwidth when the
network is under heavy traffic conditions. This gives the carrier an advantage in pricing.
They can offer competitive prices for guaranteed bandwidth and allow their customers
to use more bandwidth when it is available. In this case the guaranteed traffic passes
through the High Priority transit queues and the Best Effort is allowed on the ring only
when space is made available when there is a lack of High Priority traffic.
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