What you decide will impact the type of VoIP system your business requires. Here are a few systems to consider when reviewing the providers in this article: PBX (Private Branch Exchange) – Used to communicate internally (within the company) and externally (with the outside world). It is a private telephone network. PBXs often handle internal phone extensions and call management. Virtual PBX – Used to provide businesses of all sizes PBX technology to manage phone tasks within offices and departments. SIP Trunking – A Session Initiation Protocol (SIP) Trunk is used for multiple real-time applications like voice and video applications. Data is sent and received via a SIP client. PSTN (Public switched telephone network)
All that makes configuring and managing home routers very difficult for IT personnel, but they'll still be faced with that task because if employees run into conversation problems over their softphones, their first call will be to the IT help desk. Shunting them off to the VoIP provider, or worse, the ISP isn't a good idea either. It'll likely cause employee frustration since those outfits won't be familiar with your company and they'll either refuse support or it'll take a very long time.

Your voicemail needs to have relevant information such as your name, who the prospects are connecting to, the department you work in, why your not available to assist your prospects, when you will call them and related information, this is what the prospects would prefer hearing instead of dragging the voicemail messages speaking about your brand and more.
You’re growing tired. Your eyelids are getting heavy. You feel very sleepy now. You are gradually losing your willpower and your ability to resist suggestions. When you hear the tone you will feel helplessly compelled to leave your name, number, and a message.