SunRocket has fixed any issues they may have been having. Here's an e-mail that some users have received:
Dear xxxxxx,
This week, SunRocket released two network fixes which addressed some quality issues you may have experienced. The first fix addressed the following:
When calling out you heard nothing "dead air" and neither did your called party. When calling out you heard nothing "dead air" but the called party could hear you. Your phone would ring for a new call but you heard nothing "dead air" when you picked up your receiver. The issues above were related to a problem within our network that caused interrupted voice communications. (For our techies: Our session boarder controllers experienced a resource issue causing intermittent impact to SIP messaging and RTP streams.) This issue has been resolved.
The second fix corrected a ring-tone problem with outbound calling. For some customers, while outbound calls were typically connected, a ring-tone was not provided prior to the called party picking up. This issue was related to a particular devise distributed by SunRocket and has also been corrected.
If you have an open service ticket related solely to one of these two problems, we will be closing out your ticket as resolved. If you have an open service ticket related to any other concern or if you experienced these issues in addition to other problems, your ticket will remain open and will be addressed individually.