Cisco Cisco TelePresence Video Communication Server Expressway
Enabling endpoints registered on the video network to call MOC clients registered on OCS
Configure an NTP server
On each “OCS gateway” Cisco VCS Control peer:
1. Go to the Time page (System Configuration > Time).
1. Go to the Time page (System Configuration > Time).
2. Set
NTP server to the IP address of an NTP server
3. Set
Time zone as appropriate to the location of the Cisco VCS.
Note: You can find out which time server that windows server is using by typing ‘net time /querysntp’
from a windows command line
from a windows command line
Switch on TLS in SIP configuration (not needed if TCP connection is to be
used)
used)
1. Go to the SIP page (VCS Configuration > Protocols > SIP > Configuration).
2. Ensure
that
TLS mode is On.
Set up H.323
SIP interworking
For H.323 endpoints to be able to communicate with OCS, Cisco VCS must interwork the SIP
signaling and H.323 signaling.
signaling and H.323 signaling.
Cisco VCS Deployment Guide: Microsoft OCS 2007 R1 and R2 and Cisco VCS X5.2
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