!!! Overview
[{$pagename}] ([PDN]) is a [network] established and operated by a [telecommunications] administration, or a recognized private operating agency, for the specific purpose of providing [data] transmission [services] for the public.

[{$pagename}] is a [Circuit switching]- or [Packet switching] [network] that is available to the public and that can transmit [data] in digital form. 

[{$pagename}] provider is a company that provides access to a [{$pagename}] and that provides any of:
* X.25
* [frame relay]
* cell relay ([ATM]) 
[services]. 

[{$pagename}] access is generally includes a guaranteed [bandwidth], known as the [Committed Information Rate] ([CIR]). Costs for the access depend on the guaranteed rate. [{$pagename}] providers differ in how they charge for temporary increases in required bandwidth (known as surges).

!! More Information
There might be more information for this subject on one of the following:
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