SIP Trunks

SIP Trunks

SIP Trunks provide the functionality of ISDN but delivered over modern IP networks, connecting you and your business to our leading national network. We provide a highly flexible and cost-effective alternative to ISDN or PSTN lines for inbound and outbound voice calls.

What is SIP trunking?

SIP or ‘Session Initiation Protocol’ is an advanced replacement for the ISDN network. SIP Trunks connect your onsite PBX to your PSTN using a range of connectivity. Although EFM, EFM Lite, EoFTTC or Leased Lines are preferable for SIP, due to their 1:1 contention and SLA’s, Fibre Broadband can also be a suitable option. Our SIP Trunks are compatible with almost every IP PBX system globally.

Who can get SIP?

Anyone with a PBX can immediately switch to our flexible national SIP network, almost instantly delivering cost savings and call quality improvements.

Features and benefits

  • Free Call Recording
  • Free setup
  • DDI/DID number handling
  • Low calling costs 
  • Free inbound calls 
  • Network packet prioritisation
  • Flexible and scalable
  • Standards/RFC-compliant
  • Compatible with most modern PBX platforms, as well as Microsoft OCS and Lync