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This is what you should see in shell:
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[root@voip ~]# date |
As you can see, the timezone is the same (UTC).
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Run the following commands:
Shell yum install ntp chkconfig ntpd onThen sync the time using this command:
Shell [root@voip~]# date
Mon Mar 14 18:02:24 EET 2016
[root@voip~]# ntpdate pool.ntp.org
14 Mar 17:56:14 ntpdate[13182]: step time server 85.25.197.197 offset -373.379600 secAs you can see, there is a time lag of more than 6 minutes. This can cause issues with RTP streams, which can have out-of-order packets (poor audio quality).
Now, start the NTP server using this command:
Shell service ntpd start
The server resources may be another reason for which time is not properly synchronized. This can happen especially when virtualization is used, and the resources of one server are shared between multiple servers. This can affect audio streams also, so it's important for resources to be properly reserved. For example, CPU and memory should have the minimum VoipNow requirements reserved.
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