the term "wireline" is the same as the old school "landline"
FCC regulates every LNP action, and as usual, they are really vague about it:
When you port into Tmo, you test first here:
This means number barn is actually porting your number to a land line so you can keep it, while you are switching numbers / carriers
Might as well switch to prepaid and keep the number. This way it would be easy to switch back to plan, see some plans here:
Ah! Well... might as well do the prepaid plan - that makes a lot of sense. Thanks very much!