Siemens Enterprise OpenStage 40 SIP IP-phone is a great solution for people working in the permanent place. This model features a large display and easy setup of various protocols such as TDM, HFA and SIP.
Nuvio is the smart choice for internet service providers who wish to offer VoIP services. Nuvio has spent the time and resources building out a nationwide VoIP network so you don`t have to.