In a phone system we use VOIP. There is a really big jitter which causes a robotvoice-like effect on the first call everytime I refresh the webphone. This is a big problem because refreshing happens a lot. How can I annul this effect?
This is most probably a problem in the client software itself. Maybe it is choosing a too long buffer by default and then adjusts it based on first call statistics. Check if it has some maxjitter, maxaudiobufferlength or similar setting and adjust it after your needs (Or contact the developers if there is no such setting).