Business phone systems
Hosted and on-premises voice platforms
We design and deploy phone systems on two hosted platforms, Gamma Horizon and Yeastar P-Series Cloud Edition, and on Yeastar P-Series appliances installed on site, with Yealink handsets and the Linkus softphone. Each deployment is configured to your call flows and tested on your network before go-live.
✓ Number porting included ✓ All-IP and switch-off ready ✓ Configured by our engineers
Yealink T88W Pro
7-inch touchscreen, Wi-Fi and Bluetooth
One extension, any device
Desk phone, laptop and mobile
Top 6%
of Gamma partners (Gold Partner)
No.1
UK Yeastar reseller, 2023
Finalist
Comms Business Awards 2023
09:00 to 17:15
engineer support, Monday to Friday
Platform options
Choosing the right architecture
The right platform depends on the number of sites and users, existing hardware and resilience requirements.
Hosted PBX (Gamma Horizon)
The PBX runs in Gamma’s UK data centres. There is no on-site server, licensing is per user and resilience is built into the platform. Suitable for most single and multi-site organisations.
Hosted PBX (Yeastar P-Series Cloud Edition)
The Yeastar P-Series system delivered from Yeastar’s cloud, with no on-site server. It uses the same P-Series interface and Linkus apps as the on-site appliance, with built-in call centre tools, CRM integration and messaging, and is licensed by subscription.
On-premises or hybrid (Yeastar appliance)
A Yeastar P-Series appliance on site, connected to the network over SIP trunks. Suited to larger single sites, specific integration needs or where local control is preferred.
SIP trunks
Connects an existing IP-capable PBX to the network, replacing ISDN ahead of the 2027 withdrawal while retaining your current system.
| Hosted (Gamma Horizon) | Hosted (Yeastar Cloud Edition) | On-premises (Yeastar appliance) | SIP trunks | |
|---|---|---|---|---|
| On-site hardware | Handsets only | Handsets only | PBX appliance and handsets | Existing PBX |
| Upfront cost | Low | Low | Moderate | Low |
| Licensing | Per user | Subscription plan by extension count | Licence and appliance | Per channel |
| Scaling | Users added in minutes | Extensions added within the plan | Within licence and hardware limits | Channels added as required |
| Resilience | Data centre redundancy and automatic divert | Cloud hosted with high availability | Local, with optional failover | Dependent on the existing PBX |
| Remote and mobile working | Horizon apps | Linkus apps | Linkus apps | Dependent on the existing PBX |
| Call centre and CRM tools | Optional add-ons | Built in, depending on plan | Built in, depending on licence | Dependent on the existing PBX |
| Typically suited to | Most organisations | Teams wanting Yeastar features without on-site hardware | Larger single sites | Retaining a recent PBX |
Capabilities
Standard and optional features
Core features are included with every system. Optional features are enabled where they serve a defined requirement.
Softphone and mobile apps
Linkus and Horizon apps present your business number from laptops and mobiles, with presence and call transfer.
Call routing and IVR
Hunt groups, queues, time-of-day routing and multi-level IVR menus designed with your team.
Call recording
Automatic or on-demand recording, with secure storage and search by date, number or extension.
Operator panel
Real-time view of extension status, with drag-and-drop transfer for reception and supervisors.
SMS and WhatsApp
Customer messaging handled from the same platform as voice (Yeastar).
Video conferencing
HD audio and video meetings for internal and external participants.
Engineer’s note
Network readiness
Voice quality depends on the local network. Before installation we confirm available bandwidth, apply QoS so voice traffic is prioritised, separate voice onto its own VLAN where appropriate and check Power over Ethernet capacity for the handsets.
Hardware
Yealink handsets, provisioned before delivery
We supply Yealink desk, cordless and conference phones, including the T88W Pro with its 7-inch touchscreen and the W59R Pro ruggedised cordless handset. Handsets are provisioned with your extensions and settings before they arrive on site.
- Desk, DECT cordless and conference phones
- Zero-touch provisioning with your configuration
- Headsets and accessories supplied on request
- User guides available on our support pages
FAQs
Frequently asked questions
Can we keep our existing numbers?
Yes. Numbers are ported to the new platform on an agreed date, with no change for callers.
What connectivity is required?
A stable business broadband connection with sufficient upload capacity. As a guide, each concurrent call uses around 100kbps. We assess your connection during the survey and recommend changes only where they are needed.
What is the difference between Gamma Horizon and Yeastar Cloud Edition?
Both are hosted, so there is no phone system hardware on site. Gamma Horizon is Gamma’s UK platform and suits organisations that want a straightforward per-user service. Yeastar P-Series Cloud Edition offers the full Yeastar feature set, including the Linkus apps, call centre tools and CRM integration, and uses the same software as the on-site appliance, so a later move between cloud and on-site is simpler. We recommend one or the other after reviewing your call flows.
Should we choose hosted or on-premises?
Hosted suits most organisations because it removes on-site hardware and scales easily. On-premises can be preferable for large single sites or specific integration requirements. We set out the trade-offs before you decide.
How do remote staff connect?
Through the Linkus or Horizon apps on a laptop or mobile, or a desk phone at home. They appear on the system exactly as they would in the office.
How is installation scheduled?
Following the survey we agree an installation date, provision handsets in advance and complete the cutover out of hours where required.
Is the system affected by the 2027 switch-off?
No. All of our platforms are IP-based and do not depend on the PSTN.
Request a site survey
We will assess your current setup and network, then recommend a platform with a clear, itemised quotation.
Contact
Speak to an engineer
Tell us about your site and what you need. One of our engineers will review the details and reply, usually within one working day.
Unit 5, Acorn Business Park, 5 Northarbour Road, Cosham, Portsmouth PO6 3TH
Monday to Friday, 09:00 to 17:15