I installed FreePBX on Hyper-V. Everything is fine, but sometimes agent’s voice is heard “robotic”. This problem occurs in both external and internal (extension -> extension) calls.
An example recording: bit.ly/1BPD8YP
Asterisk full log of the call: bit.ly/15Du6AK
Asterisk SIP settings: bit.ly/1y77pef
What is the cause of the problem do you think? What should I check?
Asterisk 11.14.2
FreePBX 2.11.0.42
CentOS 6.6 x86_64 (installed on Hyper-V)
Agents use Eyebeam (1.5.6.1 Build 30936) softphone and Jabra (UC 5550) headsets.