Fixed Mobile Integration (sometimes called fixed–mobile convergence) describes, in legal practice, an integrated electronic communications service that combines fixed-line (for example broadband, SIP/VoIP or PSTN) and mobile services so users receive a single bill and can make and receive calls and messages using one device, number or client across networks. It is common in unified communications deployments.
It is not a defined statutory or case-law term; it is a descriptive industry expression used in telecoms contracts, procurement and regulatory contexts. Typical legal issues include: treatment as a bundled telecoms service; contract information and transparency; minimum terms and early termination charges; switching rights and number portability; allocation of service levels and remedies across fixed and mobile components; emergency call access and caller location; security, lawful interception and data protection.
Across England & Wales, Scotland and Northern Ireland, compliance is assessed mainly against Ofcom’s General Conditions under the Communications Act 2003 (including rules on contracts, transparency, switching/porting and emergency services). In Ireland, ComReg applies equivalent obligations under the European Electronic Communications Code. Usage and legal analysis are broadly consistent across the UK and Ireland.