How to Connect to the Key Bridge SAS

The Key Bridge SAS provides reliable access to the CBRS band for operational CBSD and Domain Proxy deployments. This guide explains how to connect using the standard WinnForum SAS-CBSD protocol.

Production SAS Endpoints

All requests use HTTPS with mutual TLS (client certificate required).

Base URL: https://sas.keybridgewireless.com/cbsd/api/v1.2

Individual endpoints:

• Registration: https://sas.keybridgewireless.com/cbsd/api/v1.2/registration
• Spectrum Inquiry: https://sas.keybridgewireless.com/cbsd/api/v1.2/spectrumInquiry
• Grant: https://sas.keybridgewireless.com/cbsd/api/v1.2/grant
• Heartbeat: https://sas.keybridgewireless.com/cbsd/api/v1.2/heartbeat
• Relinquishment: https://sas.keybridgewireless.com/cbsd/api/v1.2/relinquishment
• Deregistration: https://sas.keybridgewireless.com/cbsd/api/v1.2/deregistration

Recommended Workflow

1. Configure your CBSD or Domain Proxy with the production endpoints and certificates.
2. Follow the standard flow: registration → spectrum inquiry → grant → heartbeat.
3. Monitor heartbeats and respond to any suspension or power reduction instructions.
4. Log requests and responses, including responseCode, operationParam, and transmitExpireTime.

Best Practices

• Use detailed logging for troubleshooting.
• Test both direct CBSD connections and Domain Proxy mediation if applicable.
• Keep registrations current and perform relinquishment when devices are decommissioned.
• Contact support for assistance with complex deployments or PAL coordination.

For any questions or assistance with your production deployment, reach out to Key Bridge support. We’re here to help ensure a smooth and reliable CBRS operation.