Grand Central is a great idea that is pretty well implemented. Trying to integrate the capability is not always as easy as the idea. Screening calls and directing to any phone is a great concept that theoretically should lead to a number for life, or at least for a while.
The challenges that arise immediately after embracing the concept are all about implementation within existing telephone use. Repelling all kinds of marketing and whatever call center attacks sounds great– except they already have your landline number. One way I thought to work around this is to give your friends the new number (Grand Central number) and convert them to that number. This would, at least get the people you care about migrated to a new contact.
Now if I can get contacts that I want to hear from on my Grand Central number, I can then use the features to figure how to manage those calls. Obviously, for changing or adding “real” numbers in the future you are now liberated. You could screen by having this new number ring at multiple numbers as a first signal that it is coming through Grand Central. Now when at home a call on landline that does not also ring you cell phone can be identified as non-Grand Central, so it much more likely to be a dreaded call center invasion. It’s not the same as truly screening but it can keep you from lurching toward the landline when it is not warranted.
We can help further identify and announce your caller with our ringtone software, RipIt & RingIt. If you have Grand Central call your home phone (or mobile also) and your SkypeIn number. At your PC RipIt & RingIt can be set to announce a caller with whatever audio file you wish. Now a call from a known caller will be announced by your PC while still ringing and you can pickup the call at whatever phone you like. Check the prices on SkypePro/SkypeIn and you will be surprised how cost effective this can be.