Businesses need communication systems that support hybrid working, improve collaboration and help teams stay connected wherever they are.
As organisations move away from legacy telephony technologies and adopt more flexible ways of working, hosted telephony has become one of the most popular approaches to business communications.
But what exactly is hosted telephony, how does it work and is it the right choice for your organisation?
In this guide, we’ll explain how hosted telephony works, its key benefits, how it compares with traditional PBX systems and what to consider if you’re planning a move to a modern communications platform.
What Is Hosted Telephony?
Hosted telephony is a Cloud-based business phone system where the telephony infrastructure is hosted and managed remotely rather than on your premises.
Traditionally, organisations relied on a Private Branch Exchange (PBX) installed on-site to manage and route calls. These systems often required dedicated hardware, ongoing maintenance and periodic upgrades.
Hosted telephony moves that functionality into the Cloud. Instead of managing the infrastructure yourself, your provider hosts and maintains the platform while delivering calling services over the internet using Voice over Internet Protocol (VoIP).
Users can access business communications through:
- Desk phones
- Smartphones
- Softphone applications
- Laptops and PCs
- Microsoft Teams and other collaboration platforms
This enables organisations to access advanced communications capabilities without the cost and complexity associated with maintaining traditional telephony hardware.
How Does Hosted Telephony Work?
Hosted telephony replaces on-premise telephony infrastructure with a provider-managed Cloud platform.
Although the technical architecture is different, the user experience remains familiar. Employees can still make and receive calls as normal while benefiting from greater flexibility and a wider range of communication features.
Calls Are Delivered Over the Internet
Rather than relying on analogue or ISDN services, calls are delivered using VoIP technology across an internet connection.
Voice traffic is converted into digital data and transmitted securely through the provider’s communications platform.
Core Telephony Features Are Hosted Remotely
The functionality traditionally delivered by a PBX is provided through the hosted platform.
This typically includes:
- Call routing
- Auto attendants
- Hunt groups
- Voicemail
- Call recording
- Reporting
- User management
Because these services are hosted remotely, organisations no longer need to maintain dedicated telephony hardware on-site.
Users Can Connect from Anywhere
One of the biggest differences between hosted telephony and traditional systems is flexibility.
Employees can access business communications from multiple devices and locations while continuing to use the same business number and telephony features.
Whether someone is working from home, travelling between sites or operating from a temporary location, they can remain connected to the organisation’s communications environment.
Administration Is Simplified
Modern hosted telephony platforms typically include web-based management portals.
Administrators can add users, update call flows, make configuration changes and manage system settings without the need for hardware modifications or engineering visits.
This helps organisations respond more quickly to changing business requirements.
What Are the Benefits of Hosted Telephony?
Lower Upfront Costs
Traditional phone systems often require investment in hardware, maintenance contracts and upgrades. Hosted telephony is typically delivered through a subscription model, helping reduce the need for significant capital expenditure.
Business benefit: More predictable costs and reduced infrastructure investment.
Greater Flexibility
Modern organisations rarely operate from a single location. Hybrid working, remote working and multi-site operations have created demand for communications systems that support users wherever they are.
Hosted telephony provides a consistent experience across devices and locations.
Business benefit: Greater workforce flexibility and improved productivity.
Improved Scalability
Communication requirements often change as organisations grow. Adding new users, numbers and locations to a hosted platform is typically simpler than expanding a traditional PBX environment.
Business benefit: Communications that can adapt more easily to organisational change.
Support for Business Continuity
Communication plays a critical role during operational disruptions. Because hosted telephony is delivered through a Cloud platform, features such as failover, flexible call routing and multi-device access can help organisations maintain communication during unexpected events.
Business benefit: Improved resilience and support for business continuity.
Access to Advanced Features
Many hosted telephony platforms include functionality that would previously have required additional investment or specialist systems.
Common capabilities include:
- Auto attendants and IVR menus
- Hunt groups and intelligent call routing
- Voicemail and call recording
- Presence management
- Reporting and analytics
- Mobile applications
- CRM integrations
Business benefit: Greater visibility, improved efficiency and more effective communication management.
Easier Administration
Managing a communications platform should not require significant time or specialist expertise. Hosted telephony platforms simplify many day-to-day administrative tasks through centralised management tools.
Business benefit: Reduced management overhead and faster system changes.
Hosted Telephony vs Traditional PBX
Many organisations begin researching hosted telephony because they are considering replacing an existing PBX system.
A traditional PBX is installed and maintained on-site. While these systems can provide reliable call management, they often require ongoing maintenance, hardware investment and planned upgrades.
Hosted telephony delivers the same core telephony functionality through a Cloud platform while providing greater flexibility and easier scalability.
| Feature | Hosted Telephony | Traditional PBX |
| Hosted in the Cloud | Yes | No |
| Physical PBX required | No | Yes |
| Supports hybrid working | Yes | Limited |
| Remote access | Built in | Often requires additional solutions |
| Scalability | High | Typically hardware dependent |
| Provider-managed | Usually yes | No |
| Upfront investment | Lower | Higher |
| Business continuity features | Built in | Varies by deployment |
For many organisations, hosted telephony provides a more flexible approach that better aligns with modern working practices.
How SCG Can Help
Evonex Cloud Telephony
Evonex is SCG’s fully managed Cloud telephony platform, delivering flexible, resilient and feature-rich business communications.
Fully managed by SCG, Evonex includes setup, configuration and ongoing support, helping organisations modernise communications while reducing the complexity associated with managing telephony infrastructure.
Key capabilities include:
- Cloud-based administration
- Microsoft Teams integration
- Intelligent call routing, IVR and call queuing
- Desktop, mobile and browser access
- Presence management and messaging
- Call forwarding and simultaneous ring functionality
- In-built reporting and analytics
Evonex provides flexible, scalable communications that support hybrid working, multi-site operations and changing business requirements without the need for traditional on-premise telephony infrastructure.
Microsoft Teams Voice
Many organisations already use Microsoft Teams as part of their day-to-day operations.
SCG helps organisations combine collaboration tools with full telephony functionality within a single, unified communication environment.
This enables users to make and receive external calls through Teams while retaining business telephony capabilities such as voicemail, auto attendants, ring groups and call management.
Ready to Review Your Communications?
Whether you’re replacing an ageing PBX, planning for the transition away from legacy telephony services or looking to improve communication across your organisation, SCG can help.
Our team can help you assess your requirements, understand your options and identify the most appropriate communications solution for your business.
FAQs
Hosted telephony is a Cloud-based phone system where the provider hosts and manages the telephony infrastructure remotely rather than on your premises.
No. VoIP is the technology that enables voice calls to be delivered over the internet. Hosted telephony is the wider service that includes call management, administration, reporting and other communications features.
In most cases, yes. The terms hosted telephony, Cloud telephony and Cloud phone system are commonly used to describe similar communication solutions.
No. Users can make and receive calls through desk phones, mobile applications, softphones, laptops, PCs or Microsoft Teams.
Yes. Hosted telephony is designed to support users working from multiple locations while maintaining access to business communications.
Yes. Teams Voice solutions enable organisations to make and receive external calls through Microsoft Teams while maintaining full business telephony functionality.