| Change Control Event | Lumen telephony routing change from route plan 4 to 41 – moves the path for numbers from ACH SBC to Enterprise SBC | Change Control Event | Lumen telephony routing change from route plan 4 to 41 – moves the path for numbers from ACH SBC to Enterprise SBCCHG0079762 – Lumen telephony routing change from route plan 4 to 41 – moves the path for numbers from ACH SBC to Enterprise SBC