[db-wg] Proposal: make phone number optional in person objects

All, Piotr's set of proposed improvements to the RIPE database has inspired me! Proposal: Make the phone number optional in person objects. Motivation: For ages the "phone" attribute has been mandatory in person objects (since 1995 with document RIPE 49 at least). But I don't see any reason that this should be mandatory. Many people prefer to be contacted via e-mail or some other method. Oddly, "phone" is optional on role objects, which would seem to be the ideal place for help desks and the like. (I am NOT proposing that we change this.) Cheers, -- Shane