Hotel Voice & Telephony
Solutions UK
Complete IP telephony design, supply, installation, and support for UK hotels, covering IP PBX systems from Mitel, NEC, and Avaya, SIP trunk connectivity, DECT wireless handsets for mobile staff, PMS-integrated call accounting and billing, voicemail-to-email, automated wake-up call systems, and full 999/112 emergency call compliance. GGG Technologies also delivers Microsoft Teams Direct Routing integration for hotel back-office unified communications.
Core Voice and Telephony Capabilities
GGG Technologies designs hotel telephony solutions that balance the operational needs of front-of-house guest services with the communication requirements of housekeeping, maintenance, and management teams.
IP PBX with Hospitality Modules
Mitel MiVoice, NEC UNIVERGE, and Avaya IP Office systems are deployed with dedicated hospitality application modules that provide room status integration with housekeeping, guest name display on front desk handsets, automated morning call scheduling, do-not-disturb management, and minibar charge posting. These platforms are also available as cloud-hosted or hybrid deployments for hotels that wish to reduce on-premise hardware, and GGG Technologies manages the full migration from legacy analogue or digital PBX systems to IP with no service interruption during the cutover.
SIP Trunks and Call Accounting
GGG Technologies replaces legacy ISDN30 and ISDN2 circuits with SIP trunk connections that deliver significant cost savings on call charges and line rental while providing greater capacity and resilience through geographic redundancy across two SIP providers. Call accounting software is integrated with the hotel PMS via HAPI or proprietary interface, posting room call charges to guest folios in real time and generating management reports on call volumes, revenue, and trunk utilisation that support network capacity planning and tariff reviews.
DECT Wireless for Mobile Staff
Spectralink, Ascom, and Mitel DECT handsets provide housekeeping supervisors, maintenance engineers, concierge staff, and room service teams with full telephony access throughout the hotel without WiFi dependency. DECT operates on the dedicated 1.9 GHz DECT band, providing reliable voice quality unaffected by WiFi congestion, and modern enterprise DECT systems support push messaging, alarm handling, and task management features that improve operational coordination between mobile staff and the front desk.
Microsoft Teams UC Integration
GGG Technologies implements Microsoft Teams Direct Routing using certified AudioCodes or Oracle Session Border Controllers, allowing hotel back-office and management staff to make and receive external calls through the Teams client on desktop and mobile devices. The integration bridges the Teams environment with the hotel's existing IP PBX so that calls can be transferred between Teams users and the guest-facing telephony system, providing a unified communications platform across the entire hotel workforce without requiring separate desk phones for office-based staff.
What Our Voice Solutions Service Covers
Hotel telephony systems must simultaneously serve two very distinct user populations: guests, who expect an intuitive, reliable in-room telephone that connects them to hotel services and the outside world, and hotel staff across multiple operational departments who require flexible, mobile-capable communications tools that integrate with their workflow management platforms. GGG Technologies has deep expertise in delivering IP telephony solutions that address both needs from a single, centrally managed IP PBX platform, with the right combination of in-room handsets, front desk consoles, reception operator systems, and mobile DECT devices to match the operational structure of each hotel property.
The transition from legacy ISDN and analogue telephony to SIP-based IP telephony represents one of the most impactful infrastructure investments a UK hotel can make. ISDN services were formally withdrawn by BT Openreach in 2025, meaning that all UK hotel telephone systems that have not already migrated to SIP trunks are now operating on a platform that will be decommissioned. GGG Technologies manages the complete ISDN-to-SIP migration process, including SIP trunk provider selection and contract negotiation, number porting for all existing DDI numbers, IP PBX configuration updates, codec and QoS settings to ensure call quality over the hotel's IP network, and a phased cutover plan that transfers call traffic from ISDN to SIP trunks with no service interruption and no guest-visible disruption.
Emergency call compliance is a non-negotiable requirement for any UK hotel telephony system. Under Ofcom's emergency calling regulations, every telephone on the hotel system must be able to access 999 and 112 without any prefix code, and the system must transmit a physical location identifier to the emergency services operator. For hotel properties with hundreds of extensions spread across multiple floors and wings, this means configuring room-level location identification in the IP PBX ELIN (Emergency Location Identification Number) table and testing emergency call delivery from representative handsets across all areas of the property. GGG Technologies documents the emergency call configuration for every system it installs and provides annual testing and verification services to confirm compliance is maintained as the system evolves.
Common Telephony Challenges in UK Hotels
End-of-Life ISDN Infrastructure
With BT Openreach's PSTN and ISDN switch-off now complete, hotels that have not migrated to SIP trunks face an urgent infrastructure replacement requirement. GGG Technologies provides a managed ISDN-to-SIP migration service that covers SIP trunk procurement, number porting, IP PBX configuration, and a tested cutover with a rollback plan, ensuring that the migration is completed without any loss of telephone service or guest-facing functionality.
Uncaptured Call Revenue
Hotels without an active call accounting system integrated with the PMS frequently fail to capture revenue from chargeable guest calls. Even in an era of widespread mobile phone use, guests do occasionally make external calls from in-room telephones, and these charges must be automatically posted to the guest folio rather than absorbed as a hotel cost. GGG Technologies implements call accounting integration that ensures every chargeable call is captured, rated, and posted to the appropriate guest account in real time.
Poor Mobile Staff Communication
Hotels that rely on personal mobile phones for staff-to-staff communication have no way to manage call costs, record communication for quality purposes, or integrate staff communications with the hotel's operational systems. DECT telephony provides a hotel-controlled communication channel for mobile staff that is fully integrated with the IP PBX and can be enhanced with messaging and task management applications that improve operational efficiency in housekeeping and maintenance departments.
Wake-Up Call Failures
Manual wake-up call processes relying on a front desk operator making calls at the scheduled time are inherently unreliable, particularly during busy early-morning periods when the front desk is managing check-outs simultaneously. Automated wake-up call systems within the IP PBX hospitality module ensure that scheduled calls are delivered precisely on time regardless of front desk workload, and failed wake-up calls (where the guest does not answer) trigger automatic retries and management alerts.
Non-Compliant Emergency Call Configuration
Legacy PBX systems that require guests to dial a prefix number before accessing an outside line frequently fail to provide direct 999/112 access as required by UK regulations. GGG Technologies audits every telephone system it encounters for emergency call compliance and remediates any non-compliant configuration as a priority task, providing written confirmation of the corrected configuration and the testing results for the hotel's records.
Our Approach
GGG Technologies begins every hotel telephony project with a comprehensive audit of the existing system, including extension numbering plan review, current trunk capacity and call volume analysis, PMS integration status, DECT coverage assessment, and emergency call compliance verification. The audit report forms the basis of a telephony design proposal that addresses all identified deficiencies and maps a clear upgrade path from the current system to the target architecture. Where a full system replacement is not financially viable in a single project, GGG Technologies designs a phased roadmap that prioritises the most impactful improvements first.
System cutover is planned and executed with zero tolerance for guest-facing disruption. GGG Technologies performs all configuration work in advance on a test system, validates the full configuration against a documented test schedule, and then executes the live cutover typically on a low-occupancy night with the hotel IT manager and duty manager present to verify all functionality immediately post-cutover. A rollback plan is documented and ready to execute if any unexpected issue arises during the cutover window. Post-installation, GGG Technologies provides ongoing system administration under the managed service agreement, including extension adds and changes, DID number management, and annual emergency call compliance testing.
Supported Platforms and Vendors
- Mitel MiVoice
- NEC UNIVERGE SV9300/9500
- Avaya IP Office
- Spectralink DECT
- Ascom DECT Systems
- Microsoft Teams Direct Routing
- AudioCodes / Oracle SBC
- SIP Trunk Providers
How We Deliver Your Voice Solution
A structured delivery process that ensures your telephony system is fully tested and compliant before going live.
Telephony Audit and Review
GGG Technologies audits the existing telephony system including extension numbering, trunk capacity, PMS integration, DECT coverage, and emergency call compliance. The audit report identifies gaps and informs the design of the replacement or upgrade solution.
System Design and SIP Procurement
The IP PBX platform, SIP trunk provider, DECT system, and Teams integration architecture are specified and costed. SIP trunk contracts are negotiated and number porting orders are placed in advance of the installation date to ensure numbers are ready for cutover.
IP PBX Configuration and Testing
The IP PBX is fully configured on a test system and validated against a documented test schedule covering all core functionality including extension routing, PMS integration, call accounting, voicemail, wake-up calls, and emergency call delivery with location identification.
Handset Installation and DECT Commissioning
In-room handsets, front desk consoles, and DECT base stations are installed and registered to the IP PBX. DECT coverage is verified with a walk-test across all areas of the property. All handsets are labelled and programmed with the hotel's feature key assignments and speed dial directory.
SIP Cutover and Staff Training
Live SIP trunk cutover is executed on a low-occupancy night with a documented rollback plan in place. Front desk and management staff receive training on the new system features. Emergency call compliance is verified post-cutover and documented for the hotel's records.
Benefits for Your Hotel
A modern IP telephony solution delivers cost savings, compliance assurance, and improved operational communications across every department.
Reduced Telephony Costs
SIP trunks typically deliver cost reductions of 30 to 60 percent compared to ISDN line rental and call charges. The consolidation of multiple ISDN circuits into a smaller number of SIP trunk channels also reduces the fixed line rental component of the telephony bill significantly. For larger hotel properties with 50 or more ISDN channels, the annual savings from a SIP migration can be very substantial and may recover the cost of the migration project within the first year of operation.
Emergency Call Compliance
GGG Technologies configures and documents full compliance with UK emergency call regulations, ensuring that every handset on the system provides direct access to 999 and 112 and transmits a physical location identifier. This eliminates a significant regulatory risk for the hotel and provides the documented evidence that management requires to satisfy their duty of care obligations to guests and staff.
Accurate Call Revenue Capture
Real-time PMS call accounting integration ensures that all chargeable guest calls are captured and posted to the correct folio without manual intervention. This removes the risk of revenue leakage from missed call charges and eliminates the operational overhead of manual call charge reconciliation during check-out processing.
Improved Operational Coordination
DECT handsets for housekeeping and maintenance teams, combined with messaging and alarm features, significantly improve the speed and reliability of inter-departmental communication. Room status updates can be sent directly from a housekeeper's DECT device to the IP PBX room status system and then to the PMS, reducing the time between a room being cleaned and it becoming available for check-in.
Voicemail to Email Efficiency
Voicemail-to-email delivery ensures that missed messages are received as audio attachments in the recipient's email inbox, eliminating the need to dial into a voicemail system to retrieve messages. This feature is particularly valued by management staff who need to receive voicemail messages while away from their desk extension, and by the reservations team who need to respond promptly to enquiry voicemails during busy periods.
Reliable Automated Wake-Up Calls
Automated wake-up call delivery from the IP PBX hospitality module is 100 percent reliable, delivers calls at the precise scheduled time regardless of front desk workload, and automatically retries failed calls and alerts management. This eliminates the guest experience risk associated with manual wake-up call processes and removes the liability exposure that arises when a guest misses a flight or appointment due to a failed wake-up call.
Frequently Asked Questions
GGG Technologies installs and supports Mitel MiVoice, NEC UNIVERGE SV9300 and SV9500, and Avaya IP Office platforms, all of which have dedicated hospitality application modules providing room status updates, guest name display, call accounting with PMS billing integration, wake-up call automation, and do-not-disturb management. GGG Technologies can also deliver cloud-hosted IP PBX solutions for hotels that prefer an opex model without on-premise server hardware.
GGG Technologies integrates the IP PBX call accounting module with the hotel's PMS using standard HAPI or proprietary interface protocols, depending on the PMS platform in use. The integration posts call charges directly to the guest's folio in real time as each call completes, with the charge calculated according to the hotel's configured tariff schedule. This eliminates the need for any manual call charge entry at check-out and ensures that all chargeable calls are accurately captured regardless of volume or time of day.
Under UK Ofcom regulations and building regulations guidance, hotel telephone systems must provide unimpeded access to emergency services on 999 and 112 without requiring any prefix code, and must transmit a physical location identifier to the emergency services operator so that the location within the building can be communicated. GGG Technologies configures all hotel IP PBX systems to meet these requirements, including programming room-level location identification that is transmitted with every 999 call, and ensuring that emergency calls can be made from any handset on the system.
Yes. GGG Technologies integrates Microsoft Teams with the hotel's IP PBX infrastructure using Direct Routing via certified Session Border Controllers (SBCs). This allows back-office and management staff to make and receive external calls through their Teams client, use Teams for all internal communications, and transfer calls between the Teams environment and the hotel's guest-facing IP PBX system. Housekeeping supervisors can use Teams on mobile devices, and the front desk can operate a blended environment where some positions use traditional handsets and others use Teams.
DECT wireless handsets from Spectralink, Ascom, and Mitel provide housekeeping supervisors, maintenance engineers, and room service staff with full access to the hotel telephony system without being tied to a fixed desk location. DECT systems operate on a dedicated 1.9 GHz frequency band that does not interfere with the hotel's WiFi network, and modern DECT systems support enterprise messaging, alarm and call handling features, and integration with the hotel's workforce management platform. GGG Technologies designs DECT base station coverage to ensure full signal throughout all areas of the hotel including basement plant rooms, car parks, and rooftop plant areas.
Ready to Modernise Your Hotel's Telephony?
Contact GGG Technologies for a free telephony audit and assessment. We will identify your current system's gaps and propose the most cost-effective path to a fully compliant, modern IP telephony solution.