Before you spend your hard-earned capital investment on internet telephony by acquiring VoIP services, I suggest you befriend the term Network Address Translation. This has nothing to do with the equipment you have for your VoIP capabilities. In fact, I suggest you get a fast and
secure internet connection from a reputable internet service provider if your actual VoIP service provider doesn't have bundled internet connectivity with the VoIP service you are trying to acquire. This would assure you of more secure VoIP communication transmissions.
Well, this term generally refers to making sure your VPNs, IPs, firewall applications, and settings, etc. are all capable of the standard security measures involved in VoIP acquisition and maintenance, as much as fully optimized for voice transmissions over your internet network. Also, make it a point to regularly have inspections of the actual VoIP traffic on your network at the level of VoIP network applications, as much as the actual network layer. This last step is necessary so as to have a formidable solution of addressing the problems and the actual challenges of all the
standard protocols involved in using VoIP, as much as the protocols in the NAT, or the Network Address Translation. If you don't know what I mean, then I suggest you read more of the necessary documentation on this topic from the internet.