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Our High Volume SIP Trunks are built specifically for customers needing high call-per-second and high channel capacity.

Integrating directly with your existing PBX, our high-volume SIP Trunks allows you to take advantage of the cloud-based solutions, without the need to replace your existing equipment.

How your business can benefit

We can help you operate at high call volumes without worrying about downtime
A COST EFFECTIVE SOLUTION
A COST EFFECTIVE SOLUTION
Without the need to maintain a physical phone line, along with the reduced cost of VoIP calls, you’ll see savings month on month.
INFINITE SCALABILITY
INFINITE SCALABILITY
Simply increase your SIP Trunks on demand, growing your business without limitations. Our platform allows an infinite amount of room for growth.
LOCALISATION
LOCALISATION
Appear to have a local presence with a wide range of regional and national phone numbers available on demand.

Used by thousands of UK SMEs

Our systems are trusted by over 8,000 businesses from across the country

Enterprise Features For Any Business

Simple to use but packed with features for growing organisations
BESPOKE ARCHITECTURE
BESPOKE ARCHITECTURE
Segregated and scalable infrastructure designed to reliably support high levels of CAPS.
DEDICATED INTERCONNECTS
DEDICATED INTERCONNECTS
An isolated network for high volume traffic, allowing you peace mind when generating large call volumes.
SECURITY & COMPLIANCE
SECURITY & COMPLIANCE
We work to OFCOM, GDPR and ISO standards, ensuring we offer our customers a secure and private service. We have been ISO/27001 accredited for several years.

Who we work with

CUSTOMER SUPPORT TEAMS

Take advantage of our high-volume abilities as well as a range of features like advanced call management and reporting. Manage support reps easily, providing training and monitoring progress.

TELESALES TEAMS

With the ability to support endless extensions, telemarketing teams can take advantage of the low-cost high-volume dialler traffic and call solutions that come with SIP Trunking.

OUTSOURCED CONTACT CENTER

With support for high volume calls, advanced reporting and and hugely flexible extensions, meet your customers expectations every time.

Bespoke packages available. Built to suit your business needs.

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HIGH-VOLUME SIP TRUNKS FAQ’s

How does high volume SIP differ from the normal SIP Trunks?
High-volume SIP Trunks run on a separate dedicated platform built for high volumes of traffic and CAPS. This allows you to use the volumes you want without any issues.
How long will porting my number take?
Porting numbers can take up to two weeks depending on how many you have! We will request it as soon as possible and inform you when your number has been ported.
How do I increase my SIP Trunks?
Simply give our team a call on 01225 800800 and they will be able to get this sorted for you in minutes.
Is there a limit on how many phone numbers I can have?
Not at all! You can have as many as you like from as many locations as you want.
What do you mean by pay-as-you-go on outbound trunks?
Rather than restricting customers with packages and minute bundles, we can let you call as much as you want on an agree low cost tariff rate so you can call as much or as little as you want.
What makes Gradwell different?
Built in the UK, we have a team of over 20 developers who are constantly evolving and advancing our technology, allowing you to provide the best possible services and supply the most innovative product directly to your customers. With a range of packages to suit your business needs, you can tailor our products and services to suit your business needs and demands.

Get in touch with an expert today.