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The hardest part about dealing with the Ciscos, Mitels and Avayas of the PBX world is how they insist on using different terminology for largely the same features and to add to the entertainment also add various artificial restrictions to each of these features. Want an extension / user to be a member of more than one pickup group? Forget it on one system, on another they can be members of four but for no readily apparent reason not more than that. [just mindless examples] Gah!