I now understand porting my current AT&T land line is lot more complicated.
We can change and inform all contacts including credit card, banks, etc, to our current Google Voice number connected to the Obi202.
I checked, Google Voice cannot port our current AT&T land line number, with this message:
Ooops! We currently don't support porting from your carrier. We apologize and are working on adding support for more carriers.
I check T-Mobile, and I can transfer my AT&T land line number to T-Mobile cell phone.
Yes, we have a spare unlock GSM Android phone.
We have no need to keep our current Google Voice number.
Where in Google Voice I can make this ported number permanent?
In Obi Tutorial,
www.obihai.com/porttutorialitem #6, I do not understand the T-Mobile pin number? Do you mean the T-Mobile log in account password?
Thank you for your advice.