WebRTC Edge Connection Refused on Custom BYOC Setup

Anyone know why the WebSocket handshake fails when routing through a custom BYOC edge? We are running a JMeter script to simulate 50 concurrent softphone connections. The connection drops immediately with a 403 error before any media is exchanged. The standard cloud edge works fine, but the private edge blocks the request.

Error: WebSocket connection failed: 403 Forbidden (Origin not allowed)

Is there a specific CORS or origin whitelist setting in the Edge configuration that needs to be enabled for custom domains?

Have you tried verifying the AllowedOrigins configuration in your BYOC edge settings? The 403 usually stems from a mismatch between the softphone’s origin header and the whitelist.