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D association requires communication with the whole world to be available at any time. It wants to receive stable service of a non-stop Internet leased line.

D association requires Internet data communication 24 hours a day in its business environment. For this, the stability of line service is very important. HA system configuration allows highly stable network service protection from any kinds of network or equipment failure.


D association uses very high speed Internet network to cut communication cost. Internet leased line service can be stopped by various conditions internally and externally. For this, a more stable service is required for line service back-up and equipment back-up.

In order to secure a fail-proof internet access service, D association subscribed a HA(High-Availability) R2sky service; Master A R2SKY device with 3 ADSLs and Master B R2SKY device with 3 cable lines were integrated to provide load balancing and fail-over functions.

D association provides smooth service for overseas business support and communication 24 hours a day at present.