MCK pbxgateway Administrator's Manual page 196

Troubleshooting
If you are experiencing any of these problems and feel that it is not presenting
you with adequate voice quality, we recommend using the ADPCM 32 voice
compression method. While it requires more network bandwidth, it uses less
voice compression and therefore minimizes the chances that any of these
affects ever occur.
It is important to know the following.
• The type of audio problem
Example: Echo (see next page) , broken or choppy audio, lost
calls, etc.
• When does the problem occur?
All calls
"
Internal calls only
"
External calls only
"
Intermittently some external calls
"
• Do all users experience the problem?
Issue 2.1 December 1999
6-25