How do we keep time? and why is it so important
When Troubleshooting having the correct time on the phones is very important to gather accurate data. Some of us who also work in Large networks or for service providers need a way to gather billing.
We can use a router or some other device on the network to get time. Routers can be a server or a client.
The routers can send out either a Unicast of BCST messages to give out the time. Authentication can also be performed on the routers.
Call Manger will use a NTP reference which points to the devices. In the newer versions of call manager the PUB will synch all the other CUCM servers.
Configuration on IOS based Devices is pretty easy
ntp server 192.168.2.2
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