Quote Originally Posted by dtrose View Post
Have you tried using a soft phone only (with your SIP credentials)? This would eliminate the ATA as the culprit. I was having issues with delayed audio and or dead air. I then bought sip only phones, eliminated the ATA and the problem went away. I'm not a big fan of the Grandstream ATAs.
Yeah, they are very cheap looking, Vonage would send a nice Linksys RTP300 router, took care of all your network configuration and phones worked fine. Penny wise and pound foolish I guess?