Hi, I have a Mediant 1000 5.2 with 2 PSTN lines and a Linksys SPA922. My problem is noise when going through the Mediant gateway. I have tried to set different values in voice control, Imput gain an packetization time , but it doesn't seems to help. When I use my 3CX internal or through a VOIP supplier I don´t have problems with the noise. What can I do to make it work?