Many networks and devices still rely on 2G and 3G for coverage, machine-to-machine services and fallback, even as operators retire legacy technologies and refarm spectrum for 4G and 5G. Keeping those services stable during a migration — and understanding how they interwork with the packet core and IMS — requires engineers who know both the legacy and the modern stack.
KL-UK provides troubleshooting, signalling analysis and testing for legacy environments, and helps plan and validate the transition to newer technologies.
Please note: Availability of 2G and 3G networks depends on the relevant operator and location. Several UK operators have switched off, or are switching off, their 3G networks. We can help you assess the impact on your services and devices.
Capabilities
- Legacy network troubleshooting
- Signalling analysis
- Voice and data service testing
- Interoperability support
- Network migration assistance
- Legacy-to-modern network transition
- Technical documentation
- Operational support
Where legacy expertise still matters
- Assessing which devices and services still depend on 2G or 3G before a switch-off
- Investigating circuit-switched voice and SMS issues on legacy networks
- Validating fallback and interworking behaviour between 2G, 3G, 4G and IMS
- Supporting test labs and environments that must reproduce legacy behaviour
- Documenting legacy configurations before platforms are decommissioned
How an engagement works
- Discuss — tell us about your requirements, environment and timescales.
- Agree scope — we confirm deliverables, approach, availability and any onsite or on-call arrangements.
- Deliver — we carry out the agreed engineering, testing or support activities.
- Document and hand over — findings, configurations and procedures are recorded for your teams.