What is the reason the BYOC Edge returns TLS handshake failures when JMeter 5.6 ramps to 100 concurrent SIP INVITEs in US1? The standard trunk works fine. The error log shows 10060 Connection timed out on port 5061. We verified firewall rules allow UDP/TCP 5060-5061. The latency spikes only during the load test peak. Is there a hidden connection limit on the BYOC edge itself?