A virtual number is used with Google voice extension (GVE) and only works with the new Telo device + premier.
A personal number is a number which is assigned to a personal device, which, in turn, only rings when the personal/assigned number is called. This feature also requires premier.
Everything went smoothly. Here is the Porting Status report from My Ooma:
Today I called my "old" number and it was received on Line 1 of the Ooma. When I called the temp number it was received on Line 2. In either case, the attached Panasonic phone rang. When I dial out it uses Line 1 with the old number.Porting status for (650)XXX-XXXX
* Porting from: ATT
* Name on phone bill: NNNNNNNNNNN
* Account #: 650 XXXXXXXXXX
Step ....................... Comments
Order received ......... Received order on Aug 17, 2010
Information verified .. Your porting info was verified on Aug 17, 2010
Port initiated ............ Number port is estimated to complete on Aug 26, 2010
Port scheduled for completion ...... Your port is scheduled to complete on Aug 26, 2010
Port completed ......... Your port completed on Aug 26, 2010
I'm not sure at this point how I can have my Panasonic cordless phones indicate which number was received. However, it makes little difference as I haven't yet given out the temp number.
EDIT: By going to My Ooma, Preferences, Phone Numbers I can select a distinct Ring Pattern for each number. I set the "temp" number to S-S, which is short-short. It still rings, but I can ignore it.
It seems that, unless I get the wireless Ooma phone, the second line is not usable in the sense of a separate line. This is not important to me if I can have all calls to the temp number go immediately to voicemail and not ring.
A reviewer on Amazon said he uses his other number as a "throwaway" for when he has to provide a number for online activity. Subsequent phone spam doesn't bother him with a ring. I would like to do this too.