--- title: "The Operational Telephone System for HS2" ocid: "ocds-b5fd17-f1ffadd6-02da-43d6-95fa-6c8fedca3498" canonical_url: "https://d3tenders.com/contract/?ocid=ocds-b5fd17-f1ffadd6-02da-43d6-95fa-6c8fedca3498" markdown_url: "https://d3tenders.com/contract/ocds-b5fd17-f1ffadd6-02da-43d6-95fa-6c8fedca3498.md" json_url: "https://d3tenders.com/contract/ocds-b5fd17-f1ffadd6-02da-43d6-95fa-6c8fedca3498.json" source: "Contracts Finder" current_stage: "Tender" buyer: "SIEMENS MOBILITY LTD" published: "2026-08-05" --- # The Operational Telephone System for HS2 Buyer: SIEMENS MOBILITY LTD Current stage: Tender OCID: ocds-b5fd17-f1ffadd6-02da-43d6-95fa-6c8fedca3498 [View canonical contract page](https://d3tenders.com/contract/?ocid=ocds-b5fd17-f1ffadd6-02da-43d6-95fa-6c8fedca3498) [Download OCDS JSON](https://d3tenders.com/contract/ocds-b5fd17-f1ffadd6-02da-43d6-95fa-6c8fedca3498.json) ## Summary 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. ## Notice 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 ## Key Details | Field | Value | | --- | --- | | Publication source | Contracts Finder | | Latest notice | https://www.contractsfinder.service.gov.uk/Notice/3abc9982-6f43-4d46-aa0e-2ac399599e7a | | Notice type | Tender Notice | | Procurement type | Standard | | Procurement category | Goods | | Procurement method | Not Specified | | Procurement method details | Not specified | | Tender suitability | Not specified | | Awardee scale | Not specified | | All stages | Tender | ## Dates | Field | Value | | --- | --- | | Publication date | 5 Aug 2026 | | Submission deadline | 18 Aug 2026 | | Future notice date | Not specified | | Award date | Not specified | | Contract period | 8 Mar 2027 - 17 Oct 2033 | | Recurrence | Not specified | ## Values | Field | Value | | --- | --- | | Tender value | £2,500,000 | | Lots value | Not specified | | Awards value | Not specified | | Contracts value | Not specified | ## Status | Field | Value | | --- | --- | | Tender status | Active | | Lots status | Not specified | | Awards status | Not specified | | Contracts status | Not specified | ## Buyer | Field | Value | | --- | --- | | Main buyer | SIEMENS MOBILITY LTD | | Locality | LONDON | | Post town | North West London | | Postcode | NW1 2PL | | Country | England | | ITL 1 | TLI London | | ITL 2 | TLI3 Inner London - West | | ITL 3 | TLI36 Camden | | Local authority | Camden | | Electoral ward | Regent's Park | | Westminster constituency | Holborn and St Pancras | | Delivery location | Not specified | ## CPV Codes ### Divisions - 32 - Radio, television, communication, telecommunication and related equipment - 71 - Architectural, construction, engineering and inspection services ### Codes - 32344270 - Radio and telephone control system - 32550000 - Telephone equipment - 32551200 - Telephone exchanges - 32552120 - Emergency telephones - 71311230 - Railway engineering services ## Release History - 5 Aug 2026 at 09:30 - Tender - Tender Notice - https://www.contractsfinder.service.gov.uk/Notice/3abc9982-6f43-4d46-aa0e-2ac399599e7a ## Documents - https://www.contractsfinder.service.gov.uk/Notice/3abc9982-6f43-4d46-aa0e-2ac399599e7a 5th August 2026 - Opportunity notice on Contracts Finder - https://www.competefor.co.uk/business/viewOpportunityDetailsSupplier.html?id=116928007 Please follow this link to view the notice. ## Provenance This Markdown file is an alternate public rendering of the D3 Tenders contract record. 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