Hi,
We have a scenario here on our hand and we need urgent assistance...
We've recently taken a project in a country that implementation of VoIP is illegal! (dont ask me why) We like to connect the VoIP equipment to allow use of local PSTN lines for providing termination.
Its all simply possible if we bypass any local fibre Internet links by implementing a Satellite internet connection in that country and just install the VoIP equipment on that link. However the costs of the local fibre compared to that of satellite is like 1 to 10! so its not very feasible installing a satellite link just for that voip connection!
The local internet connection via fibre is available at very cheap prices, however it is constantly filtered/monitored for H323/SIP sessions which will then cause disconnection of that circuit by the government/provider.
I am thinking would it be possible to install a encrypted VPN tunnel between "A" site lets say in Germany and the one in that country and just pass the voip through it?
Im am concerned on these matters:
1) Would The VPN Tunneling (be it IPSEC) have any affect on the VoIP performance itself? eg dropping calls, jitter and/or quality issues etc etc.
2) How stable is this for a permenant link?
3) How much voip capacity can a tunnel handle? we are talking about 100+ calls
4) Can this tunnel be acheived using a freely available linux program or should we invest on a commercial platform which supports VPN? I know we can do it on cisco but i've heard lots about high CPU usages etc..
5) If all above is good, you know of any good tunneling programs and/or instructions?
Have you done this or similar to this before?? Any input is appreciated.
Regards
Hamed
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