Source: https://tendernation.io/opportunities/01a13c67-cdf9-7328-a0fd-5b2fd6a071d2/calling-line-identity-cli-authentication [Skip to main content](#main-content) awardedGBopen procedureSuitable for SMEs # Calling Line Identity (CLI) authentication [OFCOM](https://tendernation.io/buyers/ofcom) Estimated value £26,500 Published 26 Feb 2021 Deadline Closed 21 Dec 2020 ## Who can bid - Buyer says suitable for SMEs The buyer ticked “suitable for SMEs” on the notice. Anyone can still bid. - Buyer says suitable for VCSEs The buyer ticked “suitable for voluntary, community and social enterprises” on the notice. - Small contract value Valued under £135,018 including VAT, the lowest Procurement Act threshold for goods and services. - Open procedure Anyone can submit a full tender; there is no shortlisting stage. [More contracts for small businesses and VCSEs](/opportunities/for-small-businesses)## About this tender Ofcom has a requirement for expert review of the use of the IETF STIR standard protocols in the UK for the purposes of Calling Line Identity authentication. We require an expert review of the developments in North America including: - Details of what will be implemented by the specified dates with regards to technical capabilities and governance processes; - An assessment of the likely impact, taking into account the expected proportion of IP to non-IP lines at the specified dates; - How CLI authentication will be dealt with for non-IP networks; - How verification and authenticity will be communicated to the called party; - The expected trajectory of CLI authentication after July 2021. ## CPV classification Miscellaneous business and business-related services Source Contracts Finder (UK) [View official notice ](https://www.contractsfinder.service.gov.uk/notice/1b236f34-f8dd-455f-8ada-f873c95f4ec2) Never miss a tender like this again Get AI summaries, deadline alerts and a bid pipeline for tenders matched to your business. Free to start. [Track tenders free ](/register) [Buyer profileOFCOM: past awards and live tenders](https://tendernation.io/buyers/ofcom)[SectorMore Business services tenders](https://tendernation.io/sectors/business-services) ## More tenders like this [Employee Screening Dorset & Wiltshire Fire and Rescue Authority 17 days left 2 Nov 2026](https://tendernation.io/opportunities/01a145df-100b-70ec-8bcc-3630f263230d/employee-screening)[Invitation to Tender- For the provision of viability evidence and assessment of the West Suffolk Local Plan and the introduction of a CIL charging schedule. West Suffolk Council 31 days left 16 Nov 2026](https://tendernation.io/opportunities/01a14503-5763-721c-b887-6f844f9f4360/invitation-to-tender-for-the-provision-of-viability-evidence-and-assessment-of)[BaDC-1727 Retford Buttermarket Food Hall Operator Opportunity Bassetlaw District Council 42 days left 27 Nov 2026](https://tendernation.io/opportunities/01a14503-57cd-73bf-b1f5-a8a4f0713a79/badc-1727-retford-buttermarket-food-hall-operator-opportunity)[Consultancy Services for an Independent Mixed-Use Viability, Market Demand and Development Options Review - Fleetwood Farm, Banks West Lancashire Borough Council 21 days left 6 Nov 2026](https://tendernation.io/opportunities/01a14503-59d8-704e-b46c-727e4a0e571e/consultancy-services-for-an-independent-mixed-use-viability-market-demand-and-d)[UEFA EURO 28 Birmingham Host City - Festival Development Birmingham City Council 21 days left 6 Nov 2026](https://tendernation.io/opportunities/01a14495-7fd3-7021-b8b4-8cbe13597d01/uefa-euro-28-birmingham-host-city-festival-development)[Evaluation specialist Dartmoor’s Dynamic Landscapes programme (natural environment, landscape heritage, culture) Dartmoor National Park Authority 15 days left 1 Nov 2026](https://tendernation.io/opportunities/01a1434c-ece2-7261-8fb5-e68bdb54c1e9/evaluation-specialist-dartmoors-dynamic-landscapes-programme-natural-environme)