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Valcom, Inc.
5614 Hollins Road
Roanoke, VA 24019
USA
P. 540-563-2000
F. 540-362-9800
www.valcom.com
Valcom, Inc.
5614 Hollins Road
Roanoke, VA 24019
USA
P. 540-563-2000
F. 540-362-9800
www.valcom.com
NTP Server Upgrade
The Master Clock NTP Upgrade allows the master clock to provide NTP or SNTP time to DVRs,
Voice-over-IP telephones, IP-operated cameras, or any IP device that can receive NTP or SNTP time
protocol over a LAN.
Valcom V-GPSA-NTP Master Clock models include the NTP server as a standard feature. Valcom also offers
the NTP server as an optional upgrade to V-WMCA/V-GPSA/V-GPS-TX and V-MCS-CD Master Clocks. This
upgrade is only available when selecting features for the master clock before purchase.
When using any of the above master clocks as an NTP server, the Master Clock
MUST BE SET TO A
STATIC IP ADDRESS
. A master clock that has been set to DCHP will occasionally refresh its IP address,
making it impossible for other devices to consistently receive NTP time data. Refer to the sections of this
manual labeled “Basic Configuration - DHCP and Static IP” and “Web Interface - IP Settings” for more
information.
IP devices may receive NTP/SNTP time from Valcom Master Clocks with the NTP Server Upgrade through
the following procedure:
1) Locate the master clock IP address. There are three methods for doing this:
a) On the Web Interface, look under the IP Status tab for the field “IP” address.
b) For V-WMCA/V-GPSA/V-GPS-TX and V-GPSA-NTP clocks, press and release both buttons on the front
panel simultaneously twice for the first three digits of the IP address. Pressing both buttons again
simultaneously will show the next three digits. Repeat for the last two sets of numbers.
c) For V-MCS-CD clocks, press keys 9 and 1 simultaneously. The IP address will appear at the bottom of
the master clock LCD screen.
2) Enter the master clock IP address as the NTP source for the NTP compatible device. Consult the IP
device’s manual for information on where to enter the IP address.
3) Confirm that the IP device is receiving NTP data from the master clock by comparing the time on the
master clock LED display to the time on the device. Consult the IP device’s manual for information on how
to view the time on the device.
