No idea why this is happening, our BYOC trunks in apac-1 are dropping calls with SIP 408 Request Timeout right after the 8am SG peak hits. we have 15 trunks configured with standard failover logic but the logs show the primary carrier timing out before the secondary kicks in. using SDK 2.4.1 for monitoring. is there a hidden keepalive setting we are missing? the docs are vague on jitter buffers for BYOC.