SIP Trunks are the de-facto replacement for PSTN (Public Switched Telephone Network) connections which traditionally have been fixed wires into buildings, provided by a local Telco and in the form of COT (analogue) or BRI/PRI ISDN (digital) telephone lines.
ISDN has been practically universally discontinued and it seems that SIP (Session Initiation Protocol) trunks have finally come of age as an alternative which has more advantages than ever over ISDN.
SIP utilises your secure data connection, meaning you only need one connection for data and voice, whilst maintaining, or improving on the quality of, the service and reliability.
ProAction Networks installed it's first set of SIP trunks back in 2009 and this near-two-decade journey has meant we have had to navigate the complexitities of making SIP secure and reliable over any kind of internet connection.
Originally SIP trunking was secured by fixed IP or User/Authentication but now we will also use secure certificates to encrypt all SIP traffic over any public space.
We also have a global reach with datacentres providing SIP as a PSTN replacement in many countries which are traditionally hard to work within with direct carrier access and local regulatory alignment via local partners. We have local breakouts in the UK, EU, USA, Canada, Australia, Singapore, Hong Kong and China.
Switch and Save
Switching to SIP offers impressive ROI, as it usually comes with easy to understand bundles of free calls, and when compared with ISDN is cheaper per line, frequently has shorter terms of rentals and normally doesn't have a number tariff.
What's more, SIP trunking connects into your existing phone system and can be delivered over any kind of data connection, from ADSL, all the way up to fixed 2, 10, 100 or 1000 Mpbs connections.
- Optimises your IP Virtual Private Network (VPN) or Managed Internet Access by adding voice to your internet connectivity
- Perfect for businesses with multiple sites
- Future proof with a well-established technology, and beat the PSTN deadline
- Consolidate your voice and data network and save money whilst increasing reliability and flexibility
- Take advantage of SIP's ability to handle thousands of calls at a time
- Your gateway to Unified Communications and a full suite of communication tools
