Hi Guys i have a SIP Server (Non Cisco) and couple of SIP phones i want to use one of the SIP phone out side the office. its working fine in the local LAN, i think i need to forward some ports in the router to make it working, i try to find some stuff on the internet but didn't help, can you guys post the port numbers i need to forward in router to make it working i already open all ports in firewall for SIP server, now i guess only thing that need to be done is NAT, any help will be appreciated. there is a another option that i=we need to create a VPN tunnel between both side, but it add some jitter on the VOIP communication, second thing flexibility, we we can make it happen without VP tunnel than we have flexibility to use SIP phone any where
here is the Scenario
SIP Server=========Router/ Firewall======ADSL Modem====Internet cloud=====ADLS Modem=====Router/Firewall==========SIP Phone
IP 192.168.0.x/24 192.168.0.1/24 216.251.x.x/30 96.43.x.x/30 192.168.1.1/24 192.168.1.x/24
