SIP Trunking Solutions
We provide Premium SIP trunking solutions through an independent, carrier-grade network based in the UK. With global SIP trunking capabilities, we offer high-quality voice routes to over 240 destinations worldwide, ensuring seamless connectivity for your business.
SIP Trunking Solutions tailored to you.
We provide tailored solutions to meet your specific business needs, ensuring the best call quality, network performance, and ease of management for all your UC solutions. Our dedicated team works closely with you to customise every aspect of your SIP trunking, delivering a personalised service that enhances your communication infrastructure.
- Provision New Global SIP Trunks
- Replace Legacy PSTN/ISDN Services
- Port Existing Phone Numbers
- Integrate SIP with Teams, 3CX & many more
- Expand your reach and collaborate globally with ease
Unmatched connectivity.
Stay connected
Leading Global SIP Trunking Providers
We provide reliable SIP trunking services for efficient global communication. Our services eliminate the need for traditional phone lines or ISDN. Establish new SIP trunks in 40+ countries with a seamless transition.
How can Fuse 2 help with your SIP Trunking?
We deliver the highest quality SIP Trunk solutions for your business. As an award-winning independent provider of communication services for organisations all over the world, and can work flexibly to find the very best solution for you.
Fully managed end-to-end service
Work with a single trusted provider over all aspects of network usage, accessibility, security and monitoring.
Guaranteed Call Quality
A highly diverse carrier network that allows us to guarantee call quality and reduced latency for all your global communications.
Enterprise-grade network
Our network is proactively monitored via sophisticated software providing us with clear performance metrics for your peace of mind.
Transparent oversight
Oversight on all solutions, with notifications sent to engineers to ensure the end user is notified of potential disruptions or issues before they have even been noticed.
We're here for you.
Fuse 2’s pricing was very reasonable compared to other providers, thanks to its pay-per-trunk structure. Overall, we have been extremely impressed with the level of service provided by Fuse 2 and would happily recommend them to other schools.
Highcliffe School
Education Sector
Why choose Fuse2 for your SIP Trunking Solutions
In addition to our vast experience and expertise, our customers enjoy our personal approach to our work. We tailor our services to suit their individual requirements, and offer the highest levels of communication throughout our working relationship.
Support
24/7 Support & Monitoring with UK Engineering Teams.
Points of Presence
Independent Carrier Network with Global Points of Presence.
Certified
3CX Prefered SIP Trunk Provider
Award Winners
ITSPA Award winners in multiple categories.
Cost-Effective
Channel based calls pricing rather than per user.
Extra Functionality
Additional Call Control & Features not present with Microsoft.
Your questions
SIP Trunking FAQs
What is SIP Trunking?
SIP (session initiation protocol) trunking is an innovative form of telephony that connects your company’s phones to the public PSTN telephone network via internet-based data transfer and VoIP (voice over internet protocol), rather than through the traditional phone lines.
With SIP Trunking this means your phone services are no longer tied to any local exchange, meaning you can choose phone numbers without being linked to any specific region, as well as avoiding conventional calling charges. Data-based calls also offer a better sound quality, easier call recording and more seamless integration alongside systems like Microsoft Teams.
SIP trunks are a direct successor to older ISDN lines, with an increasing number of businesses shifting from ISDN to SIP trunk-based telephony in recent years.
What’s the difference between SIP and VoIP?
SIP (Session Initiation Protocol) and VoIP (Voice over Internet Protocol) are related and are often used together in modern communication systems, but they both serve unique purposes. Here are the key differences between SIP and VoIP
VoIP (Voice over Internet Protocol):
Broad technology for transmitting voice, video, and communication over the internet.
Encompasses a range of protocols, including SIP.
Used for various communication services like voice calls, video conferencing, and messaging.
Examples: Skype, WhatsApp.
SIP (Session Initiation Protocol):
Specific signalling protocol for initiating, controlling, and terminating communication sessions in IP networks.
A subset of VoIP, focusing on session setup and control.
Primarily used for voice calls, video conferencing, and real-time communication.
Example: Used to establish and control calls, while VoIP handles actual data transmission.
Is there a limit on how many phone numbers I can have?
There is no limit on the number of phone lines with SIP trunks, making it highly scalable for businesses of all sizes.
How many concurrent calls can a sip trunk handle
The number of concurrent calls a SIP trunk can handle depends on several factors, including the capacity of the SIP trunk, your network infrastructure, and your service provider’s offerings. Contact our expert SIP Trunk team for more information on your SIP requirements.
Why do i need a SIP trunk
SIP trunks are a cost-effective alternative to traditional phone lines, offering substantial savings on long-distance and international calls. They provide scalability, allowing you to easily adjust the number of concurrent calls to match your business’s growing communication needs.
SIP Trunks promote business continuity with features like disaster recovery, ensuring your operations remain accessible even during network disruptions. We help modern businesses with streamline communication, reducing costs, and improving overall efficiency.
How do SIP Trunks Work
SIP trunks, or Session Initiation Protocol trunks are the backbone of modern business communication systems by facilitating VoIP and multimedia services over the internet. When a call is initiated, SIP trunks create a virtual “session” and use SIP signalling to establish a connection between your caller and you.
This signalling involves the exchange of SIP messages, like requests and responses, to initiate, maintain, and terminate the session. SIP also handles multimedia session descriptions and parameter negotiations during setup, such as choosing codecs and encryption. Throughout the call, SIP remains active, controlling features like call forwarding and monitoring the session.
As the call concludes, SIP signalling is used to gracefully terminate the session, ensuring that resources are freed up for future calls. Call Detail Records (CDRs) are often kept for billing and analysing performance of networks as you develop your business you may need to upgrade in the future.
SIP Trunk Example
Lets use a hypothetical example of Company ‘A’
Company ‘A’, with offices in the US, Europe, and Asia, wants to improve communication and reduce costs.
They partner with Fuse 2, a global SIP trunking provider. Using virtual numbers, we establish local presence in each region. Calls route through SIP to PSTN seamlessly, saving costs. With failover options and 24/7 support, they enjoy reliable, efficient communication.
Company ‘A’ achieves streamlined, cost-effective communication across international offices, boosting productivity and collaboration and reducing costs calling internationally.
