Hi I am trying to find a possible cause of 'audio fading in and out' which effects about 0.1% to 0.15% of calls placed to a voip provider for termination. (I am using SIP & alaw throughout in this case) I don't believe this to be something that is network / jitter etc related (?) and looking at historical posts this may be a telco issue (voltage?) at the voip provider gateway. Any thoughts on this appreciated. Thanks __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com