Grandstream VoIPCommunication Solutions
As a Grandstream partner, Synergi Tech delivers cost-effective VoIP phone systems, IP PBX solutions, and unified communications that provide enterprise-grade features at competitive prices for businesses of all sizes.
What is Grandstream?
Grandstream Networks is a manufacturer of IP voice and video communication hardware. The range covers desk and DECT IP phones in the GXP and DP series, GXV video phones, the UCM series of IP PBX platforms, analogue and ISDN gateways, SIP speakers and door entry devices. Everything is standards-based SIP, which is the practical reason organisations choose it: the hardware interoperates with mainstream SIP trunk providers and third-party PBX platforms instead of tying you to one vendor's service.
Synergi Tech plans, installs, integrates and supports Grandstream systems for organisations across the UK. A typical deployment starts with a network and call-flow survey, because a phone system is only as good as the infrastructure underneath it. We check Power over Ethernet capacity, voice prioritisation on the network, and internet resilience, then design call routing, auto attendants, ring groups and queues around how your teams actually answer calls.
Timing matters for UK organisations right now. Openreach is retiring the traditional PSTN and ISDN network, so analogue and ISDN telephony is being withdrawn in favour of IP-based voice. If you are still on ISDN, migration is no longer optional. Grandstream gateways can bridge legacy handsets and analogue devices such as door entry or lift phones during that transition, and our VoIP systems service covers the wider migration alongside structured cabling where the network needs upgrading first.
Complete Grandstream Product Portfolio
From enterprise IP phones and scalable PBX systems to video conferencing and networking solutions, we provide the complete Grandstream ecosystem for comprehensive business communications.
- GXP2100 Series Enterprise Phones
- GXP1600 Series Basic Phones
- GXV3200 Series Video Phones
- DP Series DECT Phones
- UCM6300 Series IP PBX
- UCM6100 Series SMB PBX
- Cloud UCM Solutions
- SIP Trunking Services
- GXW4200 Series Gateways
- HT800 Series ATA Adapters
- GSC3500 Series SIP Speakers
- GDS3700 Series Door Systems
- GVC3200 Series Video Conferencing
- IPVideoTalk Video Phones
- GMD1208 Manager Displays
- Collaboration Solutions
Professional Grandstream Services
Our engineers provide comprehensive services from strategic planning through ongoing support, so your communication systems stay reliable as your organisation changes.
Strategic planning and design of Grandstream VoIP systems tailored to your business communication requirements and budget constraints.
Expert installation and configuration of Grandstream devices with comprehensive testing and minimal business disruption.
Seamless integration of Grandstream IP PBX systems with existing infrastructure and third-party applications.
Comprehensive support and maintenance services to ensure optimal performance and reliability of your communication systems.
Grandstream UCM IP PBX Systems
Grandstream's UCM series IP PBX systems provide comprehensive unified communications with built-in web meetings, video conferencing, and advanced call management features at exceptional value.
Unified Communications
Integrated voice, video, data, and mobility applications with built-in web meetings and collaboration tools.
Enterprise Security
Advanced security features including SRTP/TLS encryption, VPN support, and comprehensive access controls.
Scalable Architecture
Flexible scaling from small offices to large enterprises with support for thousands of users and concurrent calls.
Why Choose Grandstream Solutions?
Grandstream is a leading manufacturer of IP voice and video telephony solutions, providing innovative products that deliver enterprise-grade features at competitive prices for businesses worldwide.
Grandstream partner status
Complete product portfolio access
Cost-effective communication solutions
Experienced Grandstream engineers
Scalable IP PBX systems
SRTP and TLS call encryption
On-premises or hosted deployment
Ongoing configuration and support
Grandstream Innovation & Technology
Grandstream continues to innovate with cutting-edge communication technologies that provide businesses with powerful, reliable, and cost-effective solutions for modern workplace communications.
Sophisticated networking capabilities with support for multiple protocols, advanced routing, and seamless integration with existing network infrastructure.
Automated device provisioning and configuration management that simplifies deployment and reduces administrative overhead for IT teams.
Worldwide compatibility with leading service providers and PBX systems, ensuring flexible deployment options and seamless interoperability.
Grandstream Frequently Asked Questions
What is Grandstream?
Grandstream Networks is a manufacturer of IP voice and video communication hardware. Its range covers desk and DECT IP phones in the GXP and DP series, video phones in the GXV series, the UCM series of IP PBX platforms, analogue and ISDN gateways, SIP speakers and door entry devices. Grandstream equipment is SIP-based, so it interoperates with mainstream SIP trunk providers and third-party PBX platforms rather than locking you to one vendor's service.
What is a Grandstream UCM IP PBX?
The UCM series is Grandstream's IP PBX range. It provides call routing, auto attendants, ring groups, queues, voicemail, call recording and reporting, plus built-in video meetings, and it can be deployed as an on-premises appliance or hosted. Because it is a full PBX rather than a hosted seat licence, it suits organisations that want to own their telephony platform and control how calls are routed between sites.
Can Grandstream phones work with our existing phone system?
Usually yes. Grandstream handsets are standards-based SIP devices, so they can register to most SIP-capable PBX platforms and hosted providers. The practical questions are whether your provider permits third-party handsets, whether provisioning is supported so devices configure automatically rather than one at a time, and whether your network can carry voice reliably. We check all three before recommending a mixed deployment.
Do we need new cabling or network changes for VoIP?
Often some change is needed. VoIP handsets need a data connection and power, which normally means Power over Ethernet switching, and voice traffic needs prioritising so calls stay clear when the network is busy. If your cabling is older or your switches do not support PoE, that work is usually part of the project. We survey the network first so the phone system is not deployed onto infrastructure that cannot carry it.
What happened to ISDN and PSTN lines in the UK?
Openreach is retiring the traditional PSTN and ISDN network, so analogue and ISDN telephony is being withdrawn and replaced by IP-based voice services. In practice this means organisations still on ISDN need to migrate to SIP or hosted voice. Grandstream gateways can bridge some legacy equipment during a transition, but the end state is IP telephony.
Ready to Deploy Cost-Effective VoIP Solutions?
Let our Grandstream specialists design a comprehensive VoIP communication system that delivers enterprise-grade features at competitive prices. Contact us for a detailed communications assessment.