Bob Ammerman wrote:
>Negatives for external modems:
>
>-Size
>-Power supply
>-Two boxes
>-"clunkiness"
>-Room for end users to goof things up
>-Cost
>


Negatives for internal modems:

-Size
-Power supply
-Two pcbs wired together
-"awkwardness"
-Pain-ina-butt interfacing to PCI or ISA bus
-Writing modem-specific s.w.
-Cost [cheap - only advantage I can see]


Negatives for integrating chip modems:

-Finding a chip <= 64-pin smt
-Writing "all" the s.w.
-Designing complex multi-layer pcb
-Designing complex analog-digital-filtering ckt
-Integrating DAA
-Getting FCC approval
-Cost [chips ain't cheap in < 100,000 qty]
-Cost [prohibitive when using available DAA modules]


Seems every route has its own personal set of problems.

- danM

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