The flexible architecture of DC-ATM products means that the software can be distributed across multiple processors, preventing bottlenecks during call forwarding, and allowing for truly scalable systems. The N-BASE operating environment in which the DC-ATM software runs allows components to be distributed in any way that is convenient, without changing one line of protocol code.
For example:
- DC-Signalling,
DC-Call Control, and DC-PNNI routing
can be distributed to line cards, allowing call forwarding to take place
without going through a central processor (as shown in the diagram below).
- DC-ILMI
and the SSCS layer of DC-Signalling can be distributed to line cards,
while the signalling and routing occurs on a central processor.
- DC-Signalling and DC-Call Control can be distributed to line cards, with routing running on a central processor.
The same portable product code executes without modification from low-end single processor systems through to high port density systems with multiple cards and multiple processors.
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