SIP Tenders and Contracts

SIP procurement covers SIP trunks, channels and lines that replace ISDN and analogue circuits as the PSTN is switched off, Microsoft Teams direct routing, session border controllers, and cloud voice or contact centre telephony. Many notices are titled simply telephony or fixed voice services.

Stotles brings together SIP tenders and contracts from 100+ portals into one search, so you do not have to check each portal separately, and you can set alerts for new opportunities across the UK and Ireland.

If you want to search the government portals directly, Find a Tender carries higher-value contracts across the UK and Contracts Finder carries lower-value contracts in England. Public Contracts Scotland, Sell2Wales and eTendersNI cover Scotland, Wales and Northern Ireland, Ireland's eTenders covers Irish public bodies, and many councils, NHS bodies and housing associations publish on their own e-tendering portals such as ProContract. SIP trunks are mostly called off from the Crown Commercial Service network services framework and G-Cloud, often bought alongside Microsoft Teams direct routing as ISDN lines are switched off.

Voice providers must meet Ofcom rules on emergency call access and caller location, and call recording must handle data in line with UK data protection law. Tenders usually set minimum insurance cover, check financial standing and ask for evidence of similar contracts at selection stage. Under the Procurement Act 2023, suppliers can be excluded for certain criminal convictions, insolvency or failure to pay tax.

SIP buying is mostly call-offs from frameworks such as the CCS network services framework and G-Cloud, alongside dynamic purchasing systems and renewals of existing lines. SIP services are bought by NHS trusts and health boards, councils, universities, fire and rescue services and housing associations.

Read digital and technology strategies, licence and contract renewal dates, architecture reviews and early market engagement notices, which show SIP work coming due ahead of a notice. On Stotles you can track those signals and the buyers behind them, then follow a notice from pre-tender through to award.

SIP notices carry 64200000 (Telecommunications services) and 64215000 (IP telephone services).