Asterisk VQM

Asterisk is deployed in My organization, i have some in call issues like voice delay, bad quality of voice, distortion, latency. how do i over come these issues???
waiting for response.

By finding and removing the causes. They are generall due to some component of the system being overloaded.

Try the PBXMate for VQE. This software tool will help you resolve most of the quality issues and will provide you with detailed statistics on important VQM parameters like jitter, packet loss, latency, etc.