Relay provider Purple Communications may be violating the FCC’s i...

show it’s complying with the rules, “the FCC should take appropriate action,” Sorenson said. Calls to Sorenson over Purple mobile-video- phone equipment are frequently dropped, the company said. Sorenson said it notified Purple about the problem April 8, but has received no response, even after two follow-up e- mails. Purple also has failed to answer Sorenson concerns about the lawfulness of a Purple offer to register and remove users’ phone numbers from the Do-Not-Call list, it said. “Sorenson allegations on interoperability are unsubstantiated,” replied Kelby Brick, regulatory vice president for Purple. “I and others in the company have personally tested the MVP interoperability with Sorenson’s services and have not experienced any connection problems.” The equipment has “gone through intensive interoperability testing,” including by Sorenson engineers, he said. “The letter seems to be an attempt … to distract the commission from well-documented complaints against Sorenson and their monopolistic and illegal practices,” he said. “It is ironic to see Sorenson claim the ethical high ground when they have refused the commission’s attempts to audit them.”