Business phone systems for SMEs

Business phone systems for SMEs

A comprehensive, effective phone system is crucial to business comms — whether it’s a single office phone or a multisite hosted VoIP solution, Crystaline offers a range of voice services for small and medium-sized businesses.

Our family of voice products allows us to design and deliver bespoke phone systems. Our team of experts has over 50 years’ combined experience in business communications to advise our customers on the best solution for their needs.

From standard line rental with unbeatable call tariffs, to fully featured hosted voice solutions, Crystaline takes the time to understand your business needs, simplify the technical jargon and deliver tailored services.

Upgrade your legacy office phone system

For businesses that aren’t looking for a full system upgrade, Crystaline offers a range of services to upgrade your existing equipment.


Calls and Lines

Crystaline offers a range of call plans and phone lines that cover the UK, international or mobile plans, with a pay-as-you-go (PAYG) option.

SIP trunking

For businesses that want to keep their existing hardware, but make it suitable for the future of work, SIP trunking allows PBX phone systems to make calls over an internet connection.

Hosted VoIP phone systems

The emergence of internet-based telephony, along with hosted technologies and unified communications, presents new opportunities to upgrade legacy systems and improve your business phone system.

The traditional telephone network in the UK, the public switched telephone network (PSTN) is being switched off in 2027. This means that all businesses will have to give their phone system a refresh, and transition to an internet-based phone system, such as Voice over Internet Protocol (VoIP). Learn more about the PSTN switch off in our content hub.

Voice over Internet Protocol (VoIP) is the modern telephony solution. Instead of using the soon-to-be redundant PSTN, VoIP runs phone calls through an internet connection. Learn more here.

Crystaline is a VoIP provider, offering a range of solutions:

Hosted VoIP services work on a per-user license arrangement, so price is determined by the number of extensions and locations a business has. Different tariffs are available that either include all domestic calls or have a call rate card. Crystaline works closely with its customers to analyse current usage and make recommendations on the most cost-efficient approach.


For more information on any of Crystaline’s voice services, or to get free, independent advice from one of our experts, get in touch