Run, Forrest, Run.
[I am not a lawyer, seek your own counsel]

There's no such thing as a Generic 218 for Mitel. Therefore there is no manual for it.

There was a company called "Dean Industries" which produced a 218 processor for the SX-100/200 HOWEVER this was a violation of copyright, reverse-engineering agreements, and patent law. Mitel sued Dean Industries and everyone who layed hands on a Dean processor card.

If you have ever had ANY dealings with Dean Industries, Mitel will not allow you to be a dealer, reseller, representative, etc. -- and based on what they have done in the past, they may take legal action.

In other words, you're in grave danger of a lawsuit if you "upgrade a 217 for the purpose of vmail integration."

As an alternative, you might be able to set up a COV integration. Genesis sells COV equipment that works well with the SX-50, so there's likely to be a good COV voicemail for the SX-100.

If not, consider moving into the digital world.

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