09-15-2008 11:58 PM - edited 03-15-2019 01:17 PM
Hi,
I need a solution for IPT over internet. I have a head office in India and two branch offices overseas, we are connected each other through Internet. Now can you let me know âI can use one call manager for these three networks? What is the feasible solution?
Regards,
satya.m
09-16-2008 12:49 AM
I assume u use VPN and CUCM as long as there is network connectivity between IP Phones and CUCM should work. More details in our SRND guide
09-16-2008 01:12 AM
just to add to the helpful comment from GONZALO
that u need to consider the fact that u need to includ TFTP,SCCP, and other call signaling protocols that u might use
and also u need to have sort of SPF (stateful packet filltering) to let u pass the negociated udp trnsperantly and securly over vpn or any typ of conectivity
have a look at the following link which involive cisco firewall for voip over VPN:
http://www.cisco.com/en/US/products/ps6120/products_configuration_example09186a008081042c.shtml
this link advanced concept but good:
Cisco Unified Communications Voice over Spoke-to-Spoke DMVPN Test Results and Recommendations
http://www.cisco.com/application/pdf/en/us/guest/netsol/ns171/c649/ccmigration_09186a0080840eb4.pdf
god luck
if helpful Rate
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