Quick question about Analog Extension and ATA

[qbitnetworking]

Hi all, I have a customer with an old Transmitter Remote Control System (Sine RFC-1/B) that they need to be able to call in to and it also needs to be able to call out. I'm going to use the Grandstream HT802 as my ATA but I'm not sure how to set it up in 3CX. I've set up fax machines using the HT802 but I know the fax extensions work a little different. Would I create a user extension for this device? or is there a better way to do it?



Thanks!