V-Tap ISDN BRI Manual EN v2.6 Dec 2018 © 2017-2018 Vidicode 19
3.3.6
NTP settings
NTP (Network Time Protocol) can be used to synchronize the internal
clock. The V-Tap also has an internal battery to keep the clock running
when power fails, but this is not as accurate as the clock on an NTP
server. NTP gets the exact date and time from the server and the
internal clock is then updated with this.
The clock is added to each recording and is therefore very important to
get the date and time right for all recorded calls.
The V-Tap synchronizes the clock 6 times per day (each 4 hours).
NTP Server Address
The IP address or the host name of the NTP server. Default, the
addre
ss is set to “pool.ntp.org”, but the Gateway and the DNS server
must be defined also for this to work.
Leave this field empty when no NTP is used.
NTP Port Number
The used port number for NTP in the TCP protocol. This is always 123.
GMT Minutes Correction
The time correction in minutes to the GMT (Greenwich Mean Time)
zone. The number can start with the minus sign when needed.
For example, enter “
-
300”
for Eastern Time (that is -5 hours for east-
coast US & Canada).
