According to the iSync Device List, the Motorola C350 is supported by iSync. But my phone was not found.
There are small differences between the supported model and mine. Using USB Prober1 my device announces itself as:
Device VendorID/ProductID: 0x22B8/0x5802 (Motorola PCS)
whereas iSync expects2 a ProductID of 0x3802 for the C350.
Instead of editing the iSync plist file I created an iSync Plugin as Rui Carmo described in his detailed iSync Plugins Howto.
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