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SIP Trunks

SIP Trunks Explained

SIP Trunks are an IP telephony service that utilise your internet connection to replace your old telephone lines. They are ideal for businesses who want to retain an on-site PBX, and route calls over robust IP connections. 

This next generation technology provides a multi-channel VoIP communications line in and out of your premises, and connects to any PBX with an IP Telephony gateway. SIP Trunks allow you to easily add extra capacity as and when you need it, and are the go-to option for replacing legacy phone lines with cheaper, more versatile technology.


Integrate and Expand

Offering the stripped down functionality of our Cloud PBX service, Vostron SIP Trunks incorporate your office PBXs with our hosted multi-site service. They are a great way to quickly scale capacity, consolidate billing, and add resilience by using the multiple paths of your Vostron managed internet connection.

Because our SIP Trunks are delivered from within the core of our network, they come with solid SLAs and a guaranteed service, as well as same-day activation for additional channels. With network-level security, they are the perfect solution for businesses transitioning from a traditional phone line to IP telephony. For older PBXs with no IP capabilities, hybrid solutions are also available.

The Details

  • Costs
  • Risks
  • Specifications

At £4.50 per channel per month, plus 75p per number per month, SIP Trunks offer fantastic value for money. Add-ons for Call Recording are also available, and calls between sites are free of charge, with mobile, national and international calls charged on a per second basis. With online access to our real-time billing platform, you can easily monitor usage and keep track on expenditure.

Due to the very real threat of phone hacking and piracy, we go to every measure to ensure the highest levels of security for your telephone call traffic. We proactively monitor call traffic for irregular patterns, and keep all traffic on-net, protecting you from interception and fraudulent activity.

Should you wish to use a third party internet connection to access our service, we lock down usage over encrypted channels and restrict usage from unauthorised sources.

Our SIP Trunks use G.711 audio codecs for excellent audio quality. Real-time billing, mobile redirects, anti-piracy measures and bandwidth management are all included at no extra cost. In addition, we use gold standard international routes to give the best quality calls anywhere in the world.