[Freeswitch-users] FreeSWITCH on Raspberry Pi - OpenVPN gateway, B2BUA

[William King]

This is an interesting project. Could you document this, and post the
relevant configs into a github repo?

William King
Senior Engineer
Quentus Technologies, INC
1037 NE 65th St Suite 273
Seattle, WA 98115
Main:   (877) 211-9337
Office: (206) 388-4772
Cell:   (253) 686-5518
william.king at quentustech.com

On 03/26/2013 02:52 AM, Peter P GMX wrote:
> For those who might be interested:
> 
> During the last days we built a B2BUA based on Freeswitch and Raspberry
> PI Ver B which connects to a central server via OpenVPN in order to
> encrypt voice traffic and circumvent NAT issues. We plan to use it
> during travelling and to have VPN access in the home office. The costs
> for this are relatively low (~75$).
> 
> We installed
> 
>   * Raspbian
>   * Freeswitch compiled native from GIT (this really takes a while)
>   * OpenVPN
>   * Dnsmasq for eth1 side
>   * isc-dhcp-server for eth1 side
>   * tftpd-hpa for eth1 side
>   * a second LAN interface eth1 was done by a Delock USB 2.0 to LAN
>     interface (about 20$), works out of the box
>   * iptables firewall for NAT traversal
> 
> 
> This worked pretty well. We were not sure beforehand, whether the USB to
> LAN interface would work nicely, but in fact it did.
> 
> CPU usage during a single call is
> top - 10:47:34 up 39 min,  1 user,  load average: 0,64, 0,40, 0,24
> Tasks:  70 total,   1 running,  69 sleeping,   0 stopped,   0 zombie
> %Cpu(s):  6,5 us, 12,1 sy,  0,0 ni, 64,9 id,  0,0 wa,  0,0 hi, 16,5 si, 
> 0,0 st
> KiB Mem:    448776 total,    94656 used,   354120 free,    13096 buffers
> KiB Swap:   102396 total,        0 used,   102396 free,    42464 cached
> 
>   PID USER      PR  NI  VIRT  RES  SHR S  %CPU %MEM    TIME+  COMMAND
>  2785 root      -2 -10 28328  14m 4844 S   5,3  3,2   0:30.45 freeswitch
>  2651 root      20   0  5800 3052 1848 S   3,0  0,7   0:07.73 openvpn
>  3051 pi        20   0  5096 1256  968 R   0,7  0,3   0:01.97 top
> 
> 4 GB CF card was about 75%. Codec was G711.
> The load was mainly generated by the USB-to-LAN adapter. Maybe someone
> has a better solution for this?
> 
> At the end we were impressed, how easy this was to set up.
> So now we have an easy VPN-Router/B2BA which allows us to
> 
>   * connect a PC somewhere and tunnel all traffic via VPN
>   * connect a SIP phone somewhere and tunnel all VoIP traffic via VPN
> 
> 
> We did this with an OpenWRT Box before, but this is much more easy to
> handle.
> 
> Best regards
> Peter
>  
> 
> 
> 
> _________________________________________________________________________
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> http://www.freeswitchsolutions.com
> 
> 
> 
> 
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