| Change Control Event | JHU Communication Manager (PBX) – Disable IP phone registration via C-LANs. | Change Control Event | JHU Communication Manager (PBX) – Disable IP phone registration via C-LANs.CHG0075037 2024-02-15 21:05:00 – 2024-02-15 22:15:00JHU Communication Manager (PBX) – Disable IP phone registration via C-LANs.