VoIP security. As touched on above, the underlying protocol for VoIP is SIP and it wasn't built with security in mind. This means hackers are taking advantage of several new attack vectors. One example is a denial of service (DoS) attack specifically on a phone service rather than the network as a whole. This will garble or drop your service because it results in your connection quality degrading, heavy latency, and system crashes. Caller ID spoofing is also becoming more common. This amounts to a phishing attack using a phone rather than an email. By calling workers with a caller ID that looks like it's coming from inside the company, hackers are able to get employees to cough up all kinds of sensitive information because they think they can trust the person at the other end of the call.
eVoice pairs integrated fax abilities with virtual phone number services. Users also benefit from an auto attendant, the ability to forward calls, the ability to block calls, and text capabilities. eVoice offers an affordable option to customers who prefer to send and receive important information by fax instead of email.

Phone systems are a big investment with a long-term impact for small businesses. If you get the wrong system, you could have problems. If you go cheap, you could suffer additional expenses when you try to scale for growth. If you go expensive, you could pay for a lot of bells and whistles you don't need, which would put a strain on your budget.
One way to avoid this is by writing a script. When you’re writing a script for your business voicemail greeting, make sure to look over it to see if there’s any slang or business jargon that could mean two different things depending on your point of view. If there’s any potential for confusion, revise the script and simplify the language. You can always ask a friend you don’t work with to see if your message is clear as well.