Troubleshooting the IP Softphone 2050124• Firewall applications intercept or delay packets, causing theIP Softphone 2050 to reset due to the expiration of the Watchdogtimer.Note: Use care when using firewall applications on the samecomputer as the IP Softphone 2050.• Excess delay or loss of communication with the server occurs.USB Headset problemsThe following sections describes various USB headset problems andsuggested remedy actions:• “Headset not functioning” on page 124• “USB Headset Adapter features appear dimmed” on page 125• “Cannot hear audio through headset” on page 127• “Sound still comes out of my computer speakers” on page 127Headset not functioningIf you experience any headset problems, try the following actions in theorder presented:1. Verify that you are using a supported operating system. For a list ofsupported operating systems, see “System requirements” onpage 34. To check your operating system:a. Select Start.b. Right-click My Computer.c. Select Properties.A System Properties window appears.d. Select General.The General tab lists system, registration, and computerinformation.2. Verify that Universal Serial Bus controllers appears in the WindowsDevice Manager. To open the Device Manager:
