IntelliLink™ Interworking
Bridge LMR and LTE—confidently, securely, and standards-first
IntelliLink™ Interworking lets teams on traditional Land Mobile Radio (LMR) systems talk seamlessly with users on new Broadband / LTE mission-critical push-to-talk (MCPTT) networks (including FirstNet® Built with AT&T and Southern Linc’s CriticalLinc™). It’s built on 3GPP standards and Catalyst’s decades of radio-control expertise—so you get reliable, interoperable voice without lock-in or fragile one-off patches.
Why it matters
Unified operations
Keep crews on LMR and field staff on LTE connected as one team.
Future-proof migration
Move to broadband at your pace while preserving existing radio investments.
Mission-critical reliability
Designed for first responders and other critical communications users who can’t afford dropped audio.
What IntelliLink does
✓ LMR ↔ MCPTT voice interworking: Standards-compliant LMR–LTE communications, including FirstNet® PTT and Southern Linc’s CriticalLinc™.
✓ Simple talkgroup/channel patching: Pick LMR channels and LTE talkgroups via an intuitive UI to stand up patches quickly.
✓ Multi-system reach: Connects to modern and legacy LMR systems to match the realities of mixed fleets.
Supported interfaces (LMR side)
✓ P25 via ISSI and DFSI
✓ DMR via AIS
✓ Legacy LMR via Catalyst’s analog/digital control station interfaces
These flexible interfaces let you standardize on a single interworking approach—even across diverse radio systems.
How it works (at a glance)
✓ IntelliLink connects to your LTE MCPTT service through the 3GPP-defined interface
✓ On the LMR side, it presents standards-based (and legacy) wireline/radio interfaces.
✓ Dispatchers or authorized users select which LMR channels and LTE talkgroups should communicate, and IntelliLink manages the audio and control.
Where it fits
✓ Public safety (multi-agency operations, mutual aid)
✓ Utilities and transportation (field/plant coordination)
✓ Education and campus safety (mixed device environments)
Designed for real-world deployments
Standards-compliant by design
Aligns with 3GPP MCPTT specifications to avoid vendor-specific dead ends.
Catalyst-grade interoperability
Built on 25+ years of radio control and interface technology.
Proven in the field
Multiple installations supporting LMR–broadband communications today.
Pair it with Catalyst dispatch (optional)
Use IntelliLink on its own for interworking/interoperability—or combine it with Catalyst dispatch solutions for full console control and backup/monitoring workflows.
Get started
Let’s talk about your LMR and LTE environments, the MCPTT service you use, and the talkgroups/channels you need to bridge. We’ll shape an interworking plan that meets your operational and compliance needs—without disrupting day-to-day comms.