Whatever your needs, we can help you with anything from a single user SIP phone to a full blown Contact Centre.

Voice Flex (SIP)

SIP is the latest technology allowing voice call to be made over the internet. Voice Flex uses SIP to provide low cost, ISDN replacement lines that provides the best possible call quality, inexpensively, sometimes at no cost, with the flexibility that comes from using the internet.


Frontier Systems has successfully deployed VPN solutions for a number of clients. We use proven Cisco hardware and only the best Internet service providers. Whether your needs dictate full inter office connectivity or just remote working for your road warriors, we're bound to come up with a VPN solution that is ideal for you.