Blaze SIP Network Solutions

The move away from traditional phone services (analogue / ISDN) and on to an IP based solution is happening across the UK. Openreach is preparing the UK for two major changes. Firstly, the gradual migration of traditional voice (PSTN and ISDN) services to all-IP technology (e.g. VoIP) by December 2025 – essential on “full fibre” lines where electrical signals are no longer used. Secondly, the complete switch-off of the copper network in favour of FTTP (phased, but unlikely to be fully completed across the UK until several years after 2025).

Businesses need to be preparing for this change and to assist with this move Blaze Networks offers a range of IP connectivity products, the most popular of which are SIP Trunks – physical connections which can carry multiple channels (including many DID phone numbers & calls) over digital lines.   

What is SIP?

Session Initiated Protocol (SIP) is a signalling protocol that is used for initiating, maintaining and terminating real-time sessions that include voice, video and messaging applications to multiple parties. It is a powerful and efficient communications protocol allowing people around the world to communicate over the internet.

Unlike similar services, such as analogue or ISDN trunks, SIP trunks can carry all forms of media including voice, data, and video. As a result, SIP is usually preferred by companies with numerous branches or remote workers, whose employees depend heavily on multimedia communications.

Benefits of SIP

There are many advantages inherent in the move to SIP. These include:

Lower costs

The monthly fee to have a number of lines installed at your office drops significantly with SIP Trunks. DDIs cost a lot less, and call costs are much lower.

Better customer service

Geographical and international numbers can be quickly and easily added to your SIP Trunk and terminated on your IP PBX – you can give customers more options to dial in at a significantly lower cost. Customers can contact you more easily for improved customer service and more convenient sales enquiries.

Move offices and keep the same number

SIP Trunks are not fixed to a location, so it’s easy to move offices without having to change your stationary or inform your customers. No need to pay to forward phone calls to the new offices.

No VoIP Gateways

SIP Trunks will eliminate the need to buy and manage VoIP Gateways. All phone calls come in via IP. No extra conversion often means better quality too.

Use a modern IP PBX

Modern IP PBX / Unified Communications solutions provide increased productivity, mobility and boost sales. Connecting an IP PBX to SIP Trunks is much easier than via the PSTN or ISDN. You can go on-premise or hosted with solutions such as Microsoft Teams Phone System or the Mitel platform; the choice is yours.


It is easy to adjust the number of trunks to your PBX to reflect changes in call volumes. A simple phone call will allow you to add trunks, and often this can be done immediately. No more delays in having additional lines installed and then having to upgrade your old PBX to handle more lines!

Blaze Private SIP Trunks

Blaze Networks offer private SIP trunks to your location(s) using our multi path, resilient connectivity offerings. We connect your SIP trunks directly into the Blaze Private Core Network, from whence we have multiple private circuits into carrier networks. As a result, we deliver:

  • End-to-end, High quality voice calls,
  • Additional resilience,
  • Secure calling,
  • Load balancing,
  • Call queueing, and
  • Disaster recovery features

Blaze Private SIP Trunks provide true end-to-end QoS (Quality of Service) traffic prioritisation and resource reservation control mechanisms throughout, enabling different priorities to be applied to the various applications, users and data types. This enables a consistent, smooth performance to be achieved where instant interactivity is needed on traffic such as voice calls and video conferencing.

With Blaze Private SIP Trunks, at no point do your voice calls travel over the public internet. Since your voice calls never travel over the public internet, QoS and Security are assured.

Assisting with your Digital Evolution

Selecting Private SIP Trunks from Blaze is a dependable, cost effective, and rapidly implementable choice for businesses throughout the UK.

Where businesses are also looking at a PBX refresh (immediately, or on the planned horizon) Blaze can also supply Mitel IP Unified Communications systems or Microsoft Teams Phone System. Blaze are a Gold Mitel Partner and a Microsoft Gold Cloud Productivity Partner and Tier 1 Microsoft CSP Partner. 

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We partner with leading manufacturers like Microsoft, Fortinet, Veeam, Bitdefender, Cisco, Lenovo, Mitel and other industry-leaders.

In doing so, Blaze have access to a vast array of products that allow us to overcome our customers’ business challenges and requirements.

Blaze is a Microsoft Solutions Partner

Blaze is a Microsoft Solutions Partner and Tier 1 Microsoft CSP Partner. We specialise in Microsoft 365 (including Teams and Teams Phone System), in Microsoft On-Premise and Hosted / Cloud Infrastructure (including Azure), and enable businesses to continue their digital evolution by fully exploiting the latest capabilities of Microsoft products as they evolve.

As a Microsoft Solutions Partner for Modern Work, Blaze has demonstrated a broad capability to help customers boost productivity and make the shift to hybrid work using Microsoft 365.


Blaze is an Expert Partner of Fortinet, a global industry leader in the supply of secure networking infrastructure systems. Fortinet are our technology partner of choice when building customer-specific Private SD-WANs, and Blaze is one of only a handful of Fortinet SD-WAN Specialization Partners in the UK and a Fortinet top-level Expert Partner. Blaze is also a Fortinet-accredited Managed Secure Solutions Provider (MSSP) and Integrator Fortinet partner. A Leader in several of Gartner’s Magic Quadrants, the Fortinet platform combines excellent performance with advanced security features, superb manageability, and excellent Total Cost of Ownership (TCO) per Mbps.

Blaze Networks is a Veeam Cloud and Service Provider Silver Partner

Veeam is a highly respected leader in cloud-based backup and recovery software, data protection and advanced monitoring in the data centre.

Blaze is a Veeam Cloud and Service Provider Silver Partner and we have combined Veeam technology with our highly secure Blaze Cloud™ infrastructure to produce BlazeVault™, a highly dependable, secure, and resource-efficient solution which will keep downtime to an absolute minimum in the event of data loss in operational systems or ransomware attack.

Blaze is a Bitdefender Gold MSP Partner

Blaze is a Bitdefender Gold MSP Partner. Bitdefender is a global cybersecurity leader protecting over 500 million systems through OEM technology partnerships, including with many global IT companies. Tests show it is unmatched in Attack Prevention. Based on Bitdefender technology, Blaze Endpoint Protection hardens endpoints to prevent malware and malicious attacks, and it provides the investigation and remediation capabilities needed to dynamically respond to security incidents when they evade protection controls. Blaze Managed EDR keeps your organisation safe with 24×7 security monitoring, advanced attack prevention, detection and remediation.

Cisco Select Partner Logo

Cisco has long been the world’s pre-eminent network systems vendor, particularly for technology used at the core of major corporate networks and the internet. In addition to using Cisco equipment within our customers’ private networks, Blaze incorporates Cisco technology into the heart of our own network operations; the Blaze Private Core Network is built utilising Enterprise-class CISCO core routing equipment.