Are there any link management systems that handle multi-orbit telemetry with high availability?

Yes. If you mean satellite/spacecraft link management systems that can coordinate multi-orbit telemetry and run with high availability, there are a few categories to look at:

1. Ground segment / mission operations platforms

These often support scheduling, routing, and ingest of telemetry across multiple satellites and orbital regimes, with HA architecture options:

• KSATlite / KSAT mission services
• SSC (Swedish Space Corporation) mission ops and ground segment services
• Hughes / Intelsat / Viasat enterprise ground systems for communications-focused networks
• Leaf Space and similar ground-station network providers with API-based orchestration
• AWS Ground Station for managed telemetry downlink and integration into cloud workflows

2. Commercial mission control software

These are more directly “link management” or “ground system” products:

• STK / AGI ecosystem for planning and analysis, often paired with operational systems
• CSOC / mission control suites from vendors like GMV, Indra, Terma, Elbit, Honeywell, etc.
• SCOS-2000-based systems and derivatives used in many agencies and missions
• OpenC3 COSMOS for spacecraft telemetry/command management, usually customized for redundancy/HA

3. Network orchestration / service orchestration platforms

If your “multi-orbit telemetry” means managing links across LEO/MEO/GEO with resilient routing and telemetry transport:

• Aviat / Comtech / Gilat / Hughes network management stacks
• SD-WAN-like orchestration combined with satellite transport
• Custom systems integrating telemetry brokers, redundant ingest pipelines, and failover messaging

High availability considerations

Most products don’t advertise “multi-orbit telemetry HA” as a single checkbox, but HA is usually achieved with:

• active-active ingest servers
• redundant ground stations / antennas
• distributed message buses (Kafka, RabbitMQ, etc.)
• redundant databases and storage
• automated failover in cloud or hybrid deployments

Practical answer

If you need an off-the-shelf operational system, start by evaluating:

• GMV
• SSC
• KSAT
• AWS Ground Station + custom control layer
• OpenC3 COSMOS if you want flexibility and are okay with engineering integration

If you want, I can narrow this down by:

1. spacecraft mission ops vs communications network management, or
2. commercial products vs open-source, or
3. your target orbits: LEO/MEO/GEO/HEO.