---
title: "CM26 PSTN Contract and Migration to VOIP"
ocid: "ocds-h6vhtk-0586f7"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-0586f7"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-0586f7.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-0586f7.json"
source: "Find A Tender Service"
current_stage: "Award"
buyer: "TRINITY HOUSE"
published: "2025-08-13"
---

# CM26 PSTN Contract and Migration to VOIP

Buyer: TRINITY HOUSE  
Current stage: Award  
OCID: ocds-h6vhtk-0586f7

[View canonical contract page](https://d3tenders.com/contract/?ocid=ocds-h6vhtk-0586f7)  
[Download OCDS JSON](https://d3tenders.com/contract/ocds-h6vhtk-0586f7.json)

## Summary

Trinity House, a public authority in sub-central government located in London (EC3N 4DH), has concluded the procurement process for the "CM26 PSTN Contract and Migration to VOIP". This tender belongs to the services industry category, specifically focusing on the repair and maintenance of line telephony equipment. This procurement, initiated through the direct method, falls below the threshold and was executed without competition, culminating in an award. The contract was signed on 12th June 2025 and became active from 1st July 2025, running until 30th June 2028, with potential extensions available. British Telecommunications PLC was awarded the contract, valued grossly at £186,838.49.

This contract presents a prime opportunity for businesses specialising in telecommunications, especially those with expertise in transitioning from PSTN to VOIP systems, to explore similar opportunities within public sector frameworks. While the primary supplier, British Telecommunications PLC, is a large-scale enterprise, smaller companies involved in innovative telecom solutions could benefit from subcontracting opportunities. Engagement in such contracts can enhance reputation and exposure to future public procurements in the digital transformation of telecommunication infrastructures.

## Notice

This document is the Statement of Requirements (SoR) for a contract to manage our current PSTN lines and their imminent change to digital technology before the upcoming PSTN switch off. To view this notice, please click here: https://trinityhouse.delta-esourcing.com/delta/viewNotice.html?noticeId=973148028

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/048367-2025 |
| Notice type | UK7 - Contract Details Notice |
| Procurement type | Standard |
| Procurement category | Services |
| Procurement method | Direct |
| Procurement method details | Below threshold - without competition |
| Tender suitability | Not specified |
| Awardee scale | Large |
| All stages | Award |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 13 Aug 2025 |
| Submission deadline | Not specified |
| Future notice date | Not specified |
| Award date | 11 Jun 2025 |
| Contract period | 30 Jun 2025 - 30 Jun 2028 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | Not specified |
| Lots value | Not specified |
| Awards value | Not specified |
| Contracts value | £155,698 |

## Status

| Field | Value |
| --- | --- |
| Tender status | Complete |
| Lots status | Complete |
| Awards status | Active |
| Contracts status | Active |

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | TRINITY HOUSE |
| Locality | LONDON |
| Post town | Central London |
| Postcode | EC3N 4DH |
| Country | England |
| ITL 1 | TLI London |
| ITL 2 | TLI3 Inner London - West |
| ITL 3 | TLI35 Westminster and City of London |
| Local authority | City of London |
| Electoral ward | Tower |
| Westminster constituency | Cities of London and Westminster |
| Delivery location | Not specified |

## Supplier

| Field | Value |
| --- | --- |
| Number of suppliers | 1 |
| Supplier names | BRITISH TELCOMMUNICATIONS |

## CPV Codes

### Divisions

- 50 - Repair and maintenance services

### Codes

- 50334100 - Repair and maintenance services of line telephony equipment

## Release History

- 13 Aug 2025 at 11:05 - Award - UK7 - Contract Details Notice - https://www.find-tender.service.gov.uk/Notice/048367-2025

## Documents

- https://www.find-tender.service.gov.uk/Notice/048367-2025
  13th August 2025 - Contract details notice on Find a Tender

## Notice URLs

- https://trinityhouse.delta-esourcing.com/delta/viewNotice.html?noticeId=973148028
- https://www.legislation.gov.uk/ukpga/2023/54/contents

## Provenance

This Markdown file is an alternate public rendering of the D3 Tenders contract record. The canonical page is https://d3tenders.com/contract/?ocid=ocds-h6vhtk-0586f7. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-0586f7.json.