The Network Time Protocol (NTP) is a protocol used to synchronize computer system clock automatically over a networks .
The synchronization of time on computers and networks is often vitally important. A mechanism is required to disseminate accurate time around a network to computers and network devices in order to maintain order.
For Cisco Servers, cisco recommends not to use windows servers as a NTP server, and we can probably use Cisco Routers as the NTP Server for other Cisco servers.
To check the NTP status and stratum in Call manager, follow the below steps.
Step1: Login Call manager in CLI (Using Putty).
Step2: Put Command utils ntp status and will be getting data as below.
The NTP Stratum (St) should below 5 then only the NTP client can be synced properly with the NTP server.
Network Solutions 