So Smart It’s Barely VoIP! Our smart VoIP can replace your old PBX with an infinitely scalable solution that helps you avoid replacing your entire system every few years. GrayMatter Networks was born out of an emergency response team during Hurricane Sandy in 2012. Since we solved that telecommunication disaster, we have provided operational support, end-to-end engineering and ridiculously smart VoIP solutions to the hospitality, transportation and healthcare industries.