The router, running SRST software, accepts the registration and provides a dial plan, basic call features, and access to the Public Switched Telephone Network (PSTN) via local trunks.
: Go to System > Device Pool , select your site's pool, and assign the new SRST Reference . Key Considerations SRST fallback not triggered by WAN outage - Cisco Community srst fallback
If you can provide the specific log line or context where you saw "srst fallback," I can provide a more exact technical explanation. The router, running SRST software, accepts the registration
# Enable SRST fallback reset_config srst_only srst_nogate connect_assert_srst running SRST software