14.1. Evaluation of Protocol Stacks for DSL
The DSL Forum in TR-43 [1] discusses several ATM-based architectures that are currently deployed by carriers for DSL services. This document lists criteria that can be used for evaluating the appropriateness of a particular protocol stack for use in supporting a DSL service. Although TR-43 describes protocols that are currently deployed, these same criteria are also appropriate for the discussion of any protocol stack that might be used over a DSL system.
Payload efficiency: How much overhead is required to support a particular protocol stack? What is the size of the protocol headers required, and what is the ratio of data required for these headers, compared with that available for carrying payload ...
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