# Services for replacing ISDN lines with a SIP solution

> A sourced UK public sector contract award published by York and North Yorkshire Combined Authority acting as Fire and Rescue Authority\..

## Key facts

- Buyer: [York and North Yorkshire Combined Authority acting as Fire and Rescue Authority\.](/buyers/york-and-north-yorkshire-combined-authority-acting-as-fire-and-rescue-authority/contract-awards)
- Supplier: [NEC Software Solutions UK Limited](/suppliers/nec-software-solutions-uk/public-sector-contract-awards)
- Award value: £36,169
- Tender value: £36,169
- Award date: 19 February 2026
- Published: 8 April 2026
- Contract start: 10 March 2026
- Contract end: 9 March 2027
- Stage: awarded
- Procurement category: services
- Notice ID: 9c3b4b49-e2ff-42e2-973d-bcef7fd04b6a-892068
- OCID: ocds-b5fd17-70a20e8a-50e9-4129-8929-e70086218f9e

## Description

NEC is delivering SIP-based communications including voice gateway, enterprise-grade switching platform and resilient support components\. The new SIP infrastructure will replace the legacy NEC ISDN components with the SIP infrastructure\. The SIP hardware underpins the Integrated Communications Control System \(ICCS\), mission-critical platform used by NYFRS\. This NEC setup is tailored to support 999 call handling, ensuring resilience, security, and compliance STA has been recommended based on the justification that this is the sole supplier due to continuity and compatibility with the existing system\.

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## Source

[View the original notice on Contracts Finder](https://www.contractsfinder.service.gov.uk/Notice/9c3b4b49-e2ff-42e2-973d-bcef7fd04b6a-892068)