We want to switch from Verizon to Ting but I am fuzzy on how it works to port the number. Do I initiate it from the Verizon end or the Ting end? As it's being ported, will we be without phone service for any amount of time? If we decided to go back to Verizon later on, can we port our number back? I poked around on the Ting site and found nothing beyond "buy a SIM card." Thank you for your help!