WAN connection types include leased line, circuit-switched, and packet-switched.
As with leased lines, the connections are cost-effective if they carry sufficient traffic.
Generally, branch and remote office are linked to the corporate LAN via abedicated leased line which remains open all the time.
The TSA cluster domain and the standby server are linked together through leased lines.
The QoS model for HSNet includes three sorts of service: virtual leased line, assured forwarding and best effort.
These virtual circuits have a flat rate, similar to a leased line.
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