Digital Subscriber Line Access Multiplexer (DSLAM) Example Design
Digital Subscriber Line Access Multiplexer (DSLAM) Example Design
Digital Subscriber Line Access Multiplexer (DSLAM) Example Design
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<strong>Digital</strong> <strong>Subscriber</strong> <strong>Line</strong> <strong>Access</strong> <strong>Multiplexer</strong> (<strong>DSLAM</strong>) <strong>Example</strong> <strong>Design</strong><br />
this time, not been proven on hardware. The custom header is also just that...custom. This header is<br />
fully dependent upon the customer’s implementation, and associated code would have to be<br />
modified to comply with that design.<br />
10.0 Extending the <strong>Example</strong> <strong>Design</strong><br />
This implementation allows traffic to pass from the DSL aggregator to the the WAN. The design<br />
could easily be extended to cover traffic in the reverse direction. In order to do so, data from the<br />
WAN requires a custom header similar to the one provided by the aggregator indicating the<br />
physical port to which the data should be sent.<br />
This design implements AAL5 segmented ATM transport protocol on the WAN interface. It could<br />
be extended to Ethernet and Frame Relay through the built-in hooks. PCI support has not been<br />
implemented.<br />
This design uses a custom header for an assumed physical port information and can be easily<br />
modified to reflect actual hardware configurations.<br />
StrongARM processing of exception packets has not been implemented.<br />
The following “hooks” or support exist in the design to make it easier to add more functionality:<br />
• Ethernet<br />
• Frame Relay<br />
• 2nd Fast Port Use<br />
• Single Chip<br />
38 Application Note
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