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BT One Voice SIP Trunk

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To survive in a volatile, unforgiving global marketplace you need to squeeze every last drop of value out of the communications infrastructure you’ve invested in. But to really compete and succeed you need more; services that can flex with your business, expand or shrink in line with demand and that give you complete control of your communications.

BT One Voice SIP trunk Ireland is a service that doesn’t just give you cost effective calls and lines packages. It gives you a foundation for Unified Communications, with the added benefit of being able to bring in new technology at a pace that suits you.

What is SIP?

Session Initiation Protocol (SIP) is a signalling standard, which network infrastructure. It can manage additional communications (other than voice) over the IP trunk, such as IM, application sharing, video and presence etc. It is anticipated that SIP will ultimately replace the current H323 VoIP Protocol.

And SIP trunking?

A SIP trunk is a service offered by an ITSP (Internet Telephony Service Provider) or Network Services provider that enables you to use your PBX switch to take advantage of your investment in IP-enabled telephony. SIP enables you to use VoIP to make and receive calls from the Public Switched Telephony Network (PSTN), over your existing IP network and get access to new audio, IM, presence and video capabilities beyond the enterprise.


BT One Voice SIP trunk Ireland builds on the core functionality of traditional voice services and offers a number of features such as:

  • Full number porting - so that you can bring your existing phone numbers across to BT One Voice SIP trunk Ireland.
  • Connectivity to the PSTN Network.
  • Free calls to on-net sites.
  • Attractive channel charges compared to ISDN.
  • Direct Dial In (DDI) reservation and allocation.

An incoming trunk can be targeted at two different IP addresses, providing secure resilience; you’ll be able to continue doing business, even if the connection to one site goes down, by instantly switching over to the back-up site.


Converging voice and data

Voice is still the heartbeat of an organisation. It gets the message across quickly. Assessing voice services used to be all about calls and lines, but this is changing. BT One Voice SIP trunk allows you to run your voice services over the same network as unified communications and to take advantage of tools like instant messaging (IM), video and collaboration.

Flexible, consolidated and future-proof

Session Initiation Protocol (SIP) is fast becoming the standard for a broad range of IP applications such as Voice over IP (VoIP), instant messaging, presence and conferencing and equipment like IP phone systems.

SIP trunking will help you:

  • consolidate your communications costs and infrastructure
  • gain more control over your services
  • prepare your infrastructure for Unified Communications solutions.

By converging your voice and data onto one network, you reduce the need for traditional voice circuits at each site, so you’ll benefit from lower voice connection rental charges. Channels can also be apportioned more closely to your needs, driving efficiencies, rapidly flexing as your needs change. And, as SIP trunks are only limited by the bandwidth on your network, you can introduce and remove channels in a more timely way than with ISDN.


Why BT

Working with a trusted partner.

BT is a trusted supplier in Ireland and is headquartered in both Dublin and Belfast. With a proven track record in delivering network infrastructure, we invest significantly in our network across Ireland and throughout the world. We do this to provide high quality network services, while bringing the benefits of product innovation to our customers.

In Ireland, the scale and breadth of our local and global networks and services is unrivalled. We have a wide portfolio of services to support you as you evolve your voice strategy. With our capability to manage the traditional with the new, we are well positioned to provide a clear and flexible path from your existing voice, to full voice and data convergence, tailored to your needs.

To learn more about BT Ireland Voice SIP trunk, or how BT can help your business get the most from your ICT investment, contact your BT Account Manager, or fill in our online call back form here.




Download the BT One Voice SIP Trunk Datasheet

BT One Voice SIP Trunk >

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Download the BT One Voice SIP Trunk Datasheet