Implausible. How does one manage to delete only one field for all of one's
Contacts?
If indeed you actually managed the contortion it would take to delete a
single field globally (which I highly doubt), you should restore from your
most recent backup. Your Deleted Items Folder would not help you in this
unlikely scenario. Aren't you glad you back up your data?

Signature
Russ Valentine
[MVP-Outlook]
>I accidently deleted the business phone numbers for the businesses listed
>in
> my contacts list. How can I get them back or do I have to re-enter every
> one?
>
> Nellie