SIP Trunks

What is SIP Trunking?  

SIP Trunking is a standards based replacement for traditional ISDN. It connects your PBX to the PSTN via broadband, Ethernet or private circuit into our national network.  Compared to ISDN, SIP trunking is less costly per channel and more flexible in how and where geographic telephone numbers can be used. It’s also quicker to install and it delivers extremely robust business continuity.

Why Exactive recommends using SIP Trunks

Organisations using SIP Trunks can expect to:

  • Save money on call costs and line rental (it can save up to 50% on line rentals and 25% or more on call costs)
  • Have low-cost or free internal calls and great features
  • Scale up as and when required
  • Have built-in business continuity

We recommend SIP trunks that are built for voice environments such as Skype for Business (formally Microsoft Lync).  The SIP Trunks we recommend are integration tested and approved to interoperate with Microsoft's Unified Communications solution, allowing you to directly connect to the Skype for Business platform to make external calls. 

And don't forget about Skype for Business International conferencing with local call rates...

By using the Skype for Business conferencing application coupled with International dial-in numbers you can receive affordable fixed-cost telephony services to connect users to your Skype for Business conferencing bridge without changing any other telephone services. So whether you have offices in London, Hong Kong, Dubai or Sydney you can provide your clients or partners with local numbers to contact you without international call costs.

Calculate how much you could save on your telephony bill every month



How SIP Trunking made Martin a Hero

PDF: SIP Trunking FAQs