$500 via Verizon e-gift card (sent w/in 8 wks). Activation of 4G LTE/5G phone on One Unlimited for iPhone (all lines on account req'd on plan), 5G Do More, 5G Play More or 5G Get More plans req'd. Device must remain active for 45 days. $500 charge back if service cancelled w/in 12 mos or eligibility req's are no longer met. See vzw.com/bring-your-own-device for details.
I voted for you. I guess I was no help. Oh well. I suppose it is just another thing obsoleted by technology. Those who have been around a while may remember Voice Wing VOIP. That vanished and now there is Digital Voice. Here is a link that will take you directly to your idea. I believe the other was just to the heading.