We seek an equivalent to the Erlang model for circuit switched networks.
2.
:: : You're still using a circuit switched network for your phone?
3.
X . 21 is primarily used in Europe and Japan, for example in the Scandinavian DATEX and German DATEX-L circuit switched networks during the 1980s.
4.
The terminals were connected to the terminal hosts through serial interfaces and perhaps circuit switched networks, but not connected to any IP based network, and were not assigned IP addresses.
5.
The above assumptions are accurate if applied to circuit switched networks; however they fail when planning for data traffic, small exchanges and sudden sharp peaks in traffic such as that caused by TV and radio phone-in competitions.
6.
An EV-DO channel has a bandwidth of 1.25 MHz, the same bandwidth size that IS-95A ( IS-95 ) and IS-2000 ( packet-based, and thus is not constrained by the restrictions typically present on a circuit switched network.
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