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The Operational Telephone System for HS2

SIEMENS MOBILITY LTD

This public procurement record has 1 release in its history.

Tender

05 Aug 2026 at 09:30

Tender Notice
Summary of the contracting process

The procurement process is initiated by Siemens Mobility Ltd for the "Operational Telephone System for HS2", focusing on providing an advanced communication system across key infrastructure locations of HS2. This opportunity is categorised under emergency telephones and it primarily involves goods. The contracted work involves deploying a VoIP-based system and associated sub-systems at HS2's stations and other critical points. The tender is currently in the active stage, with the tender period ending on 18th August 2026. The initiative spans locations including the UK, Channel Islands, and other global regions. Interested parties should note the contract's commencement on 8th March 2027, going through to 17th October 2033, with a projected value of GBP 2,500,000.

This tender presents significant growth opportunities for businesses specialising in telecommunications infrastructure, particularly for those experienced in railway engineering services and advanced telephony systems. Companies offering comprehensive VoIP solutions, especially those with capabilities in deployment within high-speed rail environments, will find this tender particularly suitable. Despite not being tailored specifically for SMEs or VCSEs, larger enterprises with substantial infrastructure capabilities will likely find themselves well-positioned to compete for this contract.

How relevant is this notice?

Notice Information

Notice Title

The Operational Telephone System for HS2

Notice Description

The HS2 Operational Telephone System shall provide an integrated, route wide, telephone communications system at key infrastructure locations to support the operation and maintenance requirements of HS2. The Operational Telephone System shall be based on VoIP technology and consist of the following sub systems: * SIP Telephony Server (at primary + secondary location for redundancy) * Station SIP server at each of the four HS2 stations, to provide SIP solution for Station end devices (end devices are provided by the HS2 station contractor). * Voice Recorder * HMI touch screens - for use by HS2 NICC operations staff, Station Controllers, Depot Controllers to make and receive operational calls. * IP Telephony consisting of the following: o Fallback IP Phones - suitable for operators desk and will act as a fallback for the OTS HMI o Equipment Room IP Phones - suitable for desk or wall mounted within equipment rooms and REBs. o Tunnel Ventilation Equipment Room - IP telephony or intercom suitable for high background noise environments. o Ruggedised Direct Line and Keypad phones - suitable for highspeed rail trackside, tunnel locations (telephone instruments shall be suitable for aerodynamic effects for line speed of 360kph) and external environments. o Refuge Area Help Point with Induction Loop * Computer Telephony Integration (CTI), Softphone client & SDK * PSTN - OTS shall be connected to Public Switched Telephone Network (PSTN) * Session Border Controller - for SIP trunks to external systems * Management and maintenance terminal for the OTS * Supply of a reference system, comprising of single SIP server (hardware + software), HMI (inc software), VoIP Desk phone, Refuge help point, Ruggedised Direct line + Keypad phone, call logging and recording. * All hardware and software/firmware to deliver the above, noting that certain aspects can be proposed to be virtualised (eg SIP server). Siemens have quantified the list of OTS equipment required will be provided during the tender, but shall be sized for the following equipment and end devices: * 1600 end devices across the Line of Route (inc NICC, depots, Railways Systems Compounds, Tunnel Telephones, Radio Mast Compounds etc) * 430 end devices at Euston Station * 605 end devices at Old Oak Common Station * 400 end devices at Curzon Street Station The OTS shall interface with following other systems through the use of industry standard protocols and CTI: * Engineering Management System (EMS) - alarm management and supervision * Train Dispatch System (TDS) - provision of a softphone client * Station Information Management System - provision softphone client/SDK * Lift phones * Cross Passage PAVA Systems - this interface will enable the OTS to be used to make PAVA announcements * Network Rail Telephony Network

Notice Details

Publication & Lifecycle

Open Contracting ID
ocds-b5fd17-f1ffadd6-02da-43d6-95fa-6c8fedca3498
Publication Source
Contracts Finder
Latest Notice
https://www.contractsfinder.service.gov.uk/Notice/3abc9982-6f43-4d46-aa0e-2ac399599e7a
Current Stage
Tender
All Stages
Tender

Procurement Classification

Notice Type
Tender Notice
Procurement Type
Standard
Procurement Category
Goods
Procurement Method
Not Specified
Procurement Method Details
Tender Suitability
Not specified
Awardee Scale
Not specified

Common Procurement Vocabulary (CPV)

CPV Divisions

32 - Radio, television, communication, telecommunication and related equipment

71 - Architectural, construction, engineering and inspection services

CPV Codes

32344270 - Radio and telephone control system

32550000 - Telephone equipment

32551200 - Telephone exchanges

32552120 - Emergency telephones

71311230 - Railway engineering services

Notice Value(s)

Tender Value
£2,500,000 £1M-£10M
Lots Value
Not specified
Awards Value
Not specified
Contracts Value
Not specified

Notice Dates

Publication Date
5 Aug 2026Today
Submission Deadline
18 Aug 20262 weeks to go
Future Notice Date
Not specified
Award Date
Not specified
Contract Period
8 Mar 2027 - 17 Oct 2033 Over 5 years
Recurrence
Not specified

Notice Status

Tender Status
Active
Lots Status
Not Specified
Awards Status
Not Specified
Contracts Status
Not Specified

Buyer & Supplier

Contracting Authority (Buyer)

Main Buyer
SIEMENS MOBILITY LTD
Contact Name
Available with D3 Tenders Premium →
Contact Email
Available with D3 Tenders Premium →
Contact Phone
Available with D3 Tenders Premium →

Buyer Location

Locality
LONDON
Postcode
NW1 2PL
Post Town
North West London
Country
England
Major Region (ITL 1)
TLI London
Basic Region (ITL 2)
TLI3 Inner London - West
Small Region (ITL 3)
TLI36 Camden
Delivery Location
Not specified
Local Authority
Camden
Electoral Ward
Regent's Park
Westminster Constituency
Holborn and St Pancras

Further Information

Notice Documents

Open Contracting Data Standard (OCDS)

View full OCDS Record for this contracting process

JSON Markdown

The Open Contracting Data Standard (OCDS) is a framework designed to increase transparency and access to public procurement data in the public sector. It is widely used by governments and organisations worldwide to report on procurement processes and contracts. 

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