Nortel Networks NN43119-101 User Manual

Page of 136
Troubleshooting the IP Softphone 2050
121
One-way audio
If you experience problems with one-way only audio:
Check that your system administrator has programmed the handsfree 
option on the communication server.
Check that the mute button is disabled. If mute is enabled, the mute 
button on the Call Control window appears red.
If your server uses a Network Address Translation (NAT) device, 
check for proper NAT configuration. One-way only audio problems 
can occur when incorrect NAT configuration causes the 
IP Softphone 2050 to attempt to connect to the wrong IP address.
Broken or choppy speech
Broken or choppy speech can occur due to any of the following:
Low level of audio buffering
Windows transition effects
Other running applications
Audio buffering
Use the Audio dialog box to adjust the level of buffering between your 
audio hardware and the IP Softphone 2050. For details, see “Audio” on 
page 86
.
Use the audio Quality slider to increase or decrease the amount of delay. 
Less delay
 speeds up buffering, but reduces audio quality. 
Higher 
quality
 improves audio quality, but slows down buffering.
When experiencing choppy or broken speech, move the 
Audio Quality
 
slider toward 
Higher Quality
.
Windows transition effects
The Windows operating system uses very high process and thread 
priorities when performing low-level Windows operations, such as 
minimizing and maximizing applications. This can cause brief breaks in 
the IP Softphone 2050 audio streams.