Flexible SIP trunking for modern businesses.
Connect your phone system to the internet with flexible, cost-effective SIP trunking that grows with your business.
Speak to a SIP Specialist
How will our SIP solutions help?
Our SIP solutions help your business:
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Reduce call costs by replacing traditional phone lines
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Scale easily as your business grows
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Support remote and multi-site working
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Integrate with your existing phone system
Benefits of SIP trunking
Customer Service
Deliver better customer experiences with reliable, high-quality call connectivity.
Call Handling
Manage incoming and outgoing calls more efficiently across teams.
Improved Experience
Ensure consistent call quality with minimal disruption.
Setup Agents for Success
Successful agents must first be properly set up. This includes having the right equipment and software.
In-Depth Reporting
Track call performance with detailed insights and analytics.
Number Ranges
Call management gives you the ability to provide all number ranges such as 0800, 0845 & 0300 just to name a few.
Who is SIP for?
SIP is ideal for:
- Businesses looking to replace traditional ISDN or analogue lines
- Companies with existing phone systems that want to modernise
- Organisations with multiple sites or remote teams
- Growing businesses that need scalable call capacity
- Teams looking to reduce costs and increase flexibility
Why choose Silver Lining?
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Expert advice to design the right system for your business
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Seamless setup and migration with minimal disruption
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Ongoing support and proactive management
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Trusted by businesses across the UK
Frequently asked questions
Can't find the answer you're looking for? Reach out to out customer support team.
Session Initiation Protocol (SIP) is a technology that enables voice and video calls to be made over the Internet, rather than traditional phone lines. It is the foundation for modern VoIP and unified communications, helping businesses stay connected without relying on outdated ISDN services.
SIP trunks replace traditional phone lines by using your internet connection to deliver voice calls. They enable businesses to make and receive multiple calls simultaneously, scale easily, and reduce costs compared to legacy telephone systems.
Yes. At Silver Lining, our SIP services are delivered through secure data centres with 99.9% uptime SLAs and interconnect with major providers, including Gamma, BT, Virgin Media Business, TalkTalk, AWS, and Azure. This ensures your business is always connected.
Absolutely. SIP scales effortlessly from single business lines to multi-site installations, making it ideal for growing companies. Our consultants can design bespoke SIP solutions tailored to your communication needs.
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