I cannot get access to voicemail using FXS, it is a needed feature. I have tried adding <*86:vmm> to the FXS dial plan but stll no luck. All I get when I dial *86 is a busy signal. I am using Voip service through nextiva.com, and I can access the voicemail just fine through the spa942 when I dial *86. I also tried dialing 9 first then *86, but still not working. Please help!