10 telephone ipkx-nt511 to ns500

[ingy500]

Hi guys I have a project pbx ns500 In Company And 10 telephones ip
1-company in ns500
2-In each office 2 telephones ip nt511
Connect to vpn All offices 5 Sites
-What is the programming in pbx
-What programming in all router in offices
connect all to Virtual IP Extension
not connect h323

thanks to all guys

 

[obtsystems]

if you have a vpn, you just plug in the phones in second site, works best if you have dhcp on other site

 

[ingy500]

Is this a difficult programming