Yealink Skype for Business HD IP Phones Administrator Guide294Parameter Permitted Values DefaultDescription:Enables or disables CNG (Comfortable Noise Generation) feature on the Skype for Businessphone.0-Disabled1-EnabledWeb User Interface:Settings->Voice->Echo Cancellation->CNGPhone User Interface:NoneTo configure CNG via web user interface:1. Click on Settings->Voice.2. Select the desired value from the pull-down list of CNG.3. Click Confirm to accept the change.Jitter BufferJitter buffer is a shared data area where voice packets can be collected, stored, and sent to thevoice processor in even intervals. Jitter is a term indicating variations in packet arrival time,which can occur because of network congestion, timing drift or route changes. The jitter buffer,located at the receiving end of the voice connection, intentionally delays the arriving packets sothat the end user experiences a clear connection with very little sound distortion. Skype forBusiness phones support two types of jitter buffers: fixed and adaptive. A fixed jitter buffer addsthe fixed delay to voice packets. You can configure the delay time for the static jitter buffer onSkype for Business phones. An adaptive jitter buffer is capable of adapting the changes in thenetwork's delay. The range of the delay time for the dynamic jitter buffer added to packets canbe also configured on Skype for Business phones.
