21 August 2018


A Session Initiation Protocol (SIP) trunk is a voice over internet technology which can deliver telephone and video services on a global scale, using computers and mobile devices with a secure internet connection. They are set to overtake ISDNs once the big switch off has happened in 2025.

It’s evident that businesses are future-proofing by implementing VoIP systems into their telecoms strategy and now is the time to make the transition to SIP because by 2020, businesses will be unable to buy additional ISDN channels or upgrade existing ones. There are many myths surrounding SIPs which we explore in more detail here, however in this article we list the key benefits of SIP Trunking.

Man leaning back on chair in office while on the telephone.
Read more: How to migrate from ISDN to SIP

  1. Enhance remote working

    The modern workplace is changing:

    • 60% of employees’ ‘time’ is spent away from their desks1; yet…
    • … 33% of employees cite poor communications as their greatest challenge when remote 2; and
    • 84% said they could work productively if given the right tech 3

      SIP trunks can connect employees to a single telephony system to any device or locations and allow calls to be redirected to any phone, when connected with cloud-hosted PBXs.


  2. Reduce bills

    Cost reduction is a major priority for most businesses. This is particularly true for SMEs – the average UK SME has seen their costs rise by 3.2% in the past year 4


  3. You can keep your number

    If you move office, or more offices have been opened in different locations, you can keep your advertised number with SIP trunks. Therefore, your infrastructure can evolve with your business needs with efficiency and minimum downtime.


  4. Keep going in the event of a disaster

    Having a disaster plan is key to keeping your business running and avoid any potential financial risks. Quck and easy call forwarding means that your business can remain operative if your phone lines go down


  5. Read more: Top tips for creating a voice disaster recovery plan

  6. Enabling unified communications in the cloud

    If you’re thinking of transitioning your UC into the cloud, then you’ll be pleased to know that SIP trunking and UC go hand in hand. SIP trunking allows for voice, data and email directories to be combined, meaning collaboration and sharing is made much easier, something that wouldn’t be possible with an ISDN-based system.


1 GlobalWorkplaceAnalytics.com

2 ProjectsWork.com, 2013

3 Fuze (2018), Workplace Futures

4 Gamma (2018), https://www.gamma.co.uk/blog/partners/five-benefits-of-sip/?utm_source=GammaSocial&utm_campaign=GammaSocial


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