DDI Phone Number as a standard contact field (Direct Dial In)

[#1]

I think it's time to add the DDI Phone Number as a standard Contact field, after all isn't that the number we all use mostly to call contacts? It's the first Custom field I created I think. I rarely use the Company ph number so as to avoid going through a receptionist or worse still a call center! About 90% of my contacts give me their DDI number first and have it on their business cards, very few use extension numbers now. Then the DDI Number should also be available as a column header field in the Task view.