A782: PF doesn't have definitive rules on this yet, so it's a DM call. It will depend primarily on the wording of the item in question and the thing you're qualifying for; for instance, If something says "evasion class feature" as a requirement, Ring of Evasion won't cut it because that doesn't give you the evasion class feature. I would however allow the phylactery one, since channel feats only require that you have a given d6 worth of channel.

For the channeling feats in particular however, the phylactery should not help you qualify for feats that require the opposite flavor of channeling, i.e. positive for negative (e.g. PoPC should not help you pick up Channel Viciousness early.)