In these scenarios, a polite debug request (nTRST) is useless. The target is either unconscious or ignoring its debug pins. Without SRST fallback, the engineer would be forced to manually hold the hardware reset button while clicking "connect" in their IDE—a clumsy, error-prone process.
It is common to confuse SRST with MGCP Gateway Fallback , but they serve different roles: srst fallback
: A specific configuration in CUCM that tells the phones which router IP address to use if the primary server fails. Quick Implementation Guide 1. On the Cisco Router (Gateway) In these scenarios, a polite debug request (nTRST)
For a complete branch redundancy solution, both features are typically configured on the same router. Why Your Business Needs It It is common to confuse SRST with MGCP
If Strict Resource Scheduling is enabled, the scheduler may sometimes fail to find a suitable container because the specific node/rack is full.