We have built the VoIPXS App so that you can use it straight away. What can you do with the VoIPXS App? * Call and receive calls with the call quality you're used to * Clients see a landline number if you ring when you are outside the office * See who is calling you and make a call from your own contacts * You don't need a desk phone, but the App combines well with it * Simply use your own voicemail from your cellphone provider