[asterisk-users] VoIP over virtualized VPN

[Jeff LaCoursiere]

I have several Atom based boxes running OpenVPN and processing up to six 
simultaneous calls over it with no issues.  I am quite sure it could do 
more.  Load is still at .2 :)

j

On Wed, 26 May 2010, Andrew Hakman wrote:

> I use openvpn for VOIP traffic all the time. It's not a commercial
> application, and only one simultaneous call usually on each vpn link,
> but I even have a VPN client on a Linksys WRT-54g wireless router with
> 1 phone behind it - it works flawlessly, so it does not take a lot of
> CPU to run a vpn connection.
>
> Andrew
>
> 2010/5/26 Motiejus Jakštys <desired.mta at gmail.com>:
>> Hi List,
>> Our company has several small distributed offices we would like to
>> inter-connect with bridged VPN a single subnet (last example in
>> http://www.shorewall.net/OPENVPN.html). We have SIP phones in every
>> office (up to 5) so we can use SIP without any NATing and securely.
>> Max theoretical simultaneous calls possible ~30, but we have ~5-10 @
>> regular basis.
>> OpenVPN server would be in the same datacenter like Asterisk PBX (in
>> one physical subnet). Asterisk and OpenVPN are virtualized XEN guests.
>>
>> I wonder about overheads, system loads and other possible gotchas in
>> this setup. Is there anything I should (re-)consider before
>> implementing this? Anyone had difficulties running VoIP or VPN traffic
>> over (virtualized if it makes any difference) VPN?
>> We use mainly g729 and speex, and very little g711.
>>
>> Regards
>> Motiejus
>>
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