Web-4M User's Manual
  Contents Common phone issues.

Does your computer's hardware support streaming audio? 
There are many sound cards available. To see if your sound card supports half-duplex (1-way) or full-duplex (2-way) audio, perform the following test. 
  1. Open the Windows Sound Recorder (typically found under Accessories) 
  2. Record a message (about 15 seconds long) and play it back. If you cannot do this, your computer may not have a sound card or may not be configured properly. In either case you need to get the basic Windows audio working to use the Web-4M phone. Talk to your administrator. 
  3. If you can record and playback a message, your computer supports half-duplex (one way) audio. To test for full-duplex (2-way) audio, open a second Sound Recorder. While playing back an audio clip in one recorder, record another audio clip in the second Sound Recorder. If you can record while playing back, your computer supports full duplex audio and the Web-4M phone should work properly. 
  4. If your computer only supports half-duplex, you can still use the Web-4M phone but you will need to use the Switch to Talk button to switch between talking and listening. This mode of operation is similar to that of a walkie-talkie. Also, if you are using the Audio Conferencing only half-duplex is required. 
Adjusting the Speaker and Microphone Volume
Your computer should have a volume control program (often found in Accessories). Use the Sound Recorder to record and playback audio to test appropriate microphone and speaker levels. Consult the Windows Help to find out more about volume control (type volume in the Help index) 

Feedback from the speakers to the microphone is not uncommon. A headset with earphones and microphone will minimize this effect.

Phone is Ghosted
Make sure you select a user before trying to click the Phone icon. If the phone is still ghosted, you are most likely not on a supported platform. The Phone is presently supported on Windows 95/98/2000/NT, Linux, and Solaris. 

Audio Quality
The quality of the audio can improve through the use of a high quality noise reduction microphone. The speaker or headset can also affect quality. 

Phone or Audio Conference Sound has Dropouts.
The Phone is designed to work over low bandwidth networks (28.8 kbs or greater). Occasionally at low bandwidths (during high network traffic times), audio packets may be dropped causing a disruption in the audio stream. Normally these are brief and do not significantly compromise communications. If these dropouts become problematic, upgrade to a higher bandwidth network. 

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