NimbusVoice by 640Square is a full featured, geo-redundant, extremely reliable and fully hosted VOIP phone solution for small to medium businesses. NimbusVoice is a great solution for businesses with 1 to 100 employees and more in some cases. NimbusVoice offers features such as extension dialing, call forwarding, multi-location integration, mobile phone integration, voicemail and fax to email, call recording and more. See a full list of features here. Our corporate headquarters is located at 1023 Main Street in Conway, Arkansas 72032. NimbusVoice is a solution provided by 640Square, LLC.