Nortel Networks NN43119-101 User Manual

Page of 136
Troubleshooting the IP Softphone 2050
124
Firewall applications intercept or delay packets, causing the 
IP Softphone 2050 to reset due to the expiration of the Watchdog 
timer.
Note: 
Use care when using firewall applications on the same 
computer as the IP Softphone 2050.
Excess delay or loss of communication with the server occurs.
USB Headset problems
The following sections describes various USB headset problems and 
suggested remedy actions:
Headset not functioning
If you experience any headset problems, try the following actions in the 
order presented:
1. Verify that you are using a supported operating system. For a list of 
supported operating systems, see “System requirements” on 
page 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 computer 
information.
2. Verify that Universal Serial Bus controllers appears in the Windows 
Device Manager. To open the Device Manager: