300-070 · Question #216
300-070 Question #216: Real Exam Question with Answer & Explanation
The correct answer is B: The IP phone will continuously try to re-establish a connection with the primary server; if. CUCM uses a failover and fallback mechanism for IP phone registration. When a phone fails over to a backup CUCM node, it does not simply stay there permanently. Instead, the phone continuously sends keepalives or registration attempts back to its primary CUCM server. Once the pri
Question
Options
- AThe IP phone will try to re-establish a connection to the primary server every 90 seconds.
- BThe IP phone will continuously try to re-establish a connection with the primary server; if
- COnce the IP phone registers with the backup server, the administrator will need to reset the IP
- DOnce connectivity is re-established with the primary server, the IP phone will wait until there have
Explanation
CUCM uses a failover and fallback mechanism for IP phone registration. When a phone fails over to a backup CUCM node, it does not simply stay there permanently. Instead, the phone continuously sends keepalives or registration attempts back to its primary CUCM server. Once the primary becomes reachable again, the phone automatically re-registers with it. This is called 'fallback' behavior. It is transparent to the user and requires no administrator intervention or phone reset, unlike options C and D which imply manual steps or waiting conditions.
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