On Tue, May 14, 2013 at 9:27 AM, Erick Wellnitz <ewellnitzvoip at gmail.com> wrote: > I use top down distribution. Are there any other settings I need to make > sure that the calls don't fail when the SIP trunk is unavailable for any > reason? Depending on the version of CM that you're using, you may want to check "SIP PING".