AT&T / DSL / U-Verse

AT&T / DSL / U-Verse

Required Settings:

 - Phones must use TCP instead of UDP

 - Disable SIP ALG

 - Disable IPv6

    • Related Articles

    • My Phone Number Shows up as "Spam Risk"

      There are multiple factors that determine whether an incoming call would be labeled “Spam Likely” or “Spam Risk”. Many of these factors are controlled by regulatory agencies and not by PrimeVOX directly. Customers Still Switching to PrimeVOX If you ...
    • SMS/MMS Registration

      Why is SMS/MMS registration necessary? With the growing issue of “spam texting” over the past several years, U.S. cellular carriers have implemented new standards to safeguard the integrity of business messaging. As of June 2023, any business that ...
    • When to Reboot vs Factory Reset a Phone

      In most cases, turning a phone off and back on again (Rebooting) is all it takes to fix common issues. However, there are occasional instances where a factory reset is required instead. You can Reboot a phone by unplugging the Power Cord from the ...
    • Account Cancellation

      We're sorry to see you go! We strive to provide the best possible customer service and support to all of our customers. If you're choosing to cancel your account with PrimeVox because we've either missed the mark on something or there's a feature you ...
    • Yealink T54/T5 User's Guide

      Yealink T5 Model User's Guide Below is a photo of a Yealink T54W IP Phone. The features, keys, and functions you will learn throughout this user's guide will be the same across most Yealink T5 model series. If you have any additional questions ...