08-27-2014 05:30 AM - edited 03-16-2019 11:55 PM
So one of my customers is having a problem with their single number reach. It rings the desk phone properly, but does not ring the users cell phone. After quite a bit of testing with different cell phone's, It was found that all AT&T phones (tested 3 different ones) would not ring along with the desk phone. Verizon and Sprint cell phones rang with the desk phone. Any thoughts? Thanks!