FAX Support - "Robot voice" on line
In situations where there are audio quality issues making speech sound "robotic." the culprit is most often caused by a lack of bandwidth on the network. Usually this issue can be resolved by following the steps below:
Disable QoS settings on any networking equipment.
Test using a lower bandwidth Codec such as g.729 or g.726 which use less bandwidth.
Test during a time when there is no other network traffic occurring.