Am 22.02.2016 um 12:07 schrieb Michael Knill 
<michael.kn...@ipcsolutions.com.au>:

> Hi all
> 
> I am using Yealink phones with Open VPN to Astlinux which I have mentioned a 
> few times as way cool.
> 
> One of the problems I am having is that unless I set directmedia=no, I don’t 
> get RTP between a remote and local extension. directmedia=yes works fine.
> Note that the local extension is not on a directly connected subnet e.g. I 
> needed to set up routing on Astlinux. 

One important point is to add the OpenVPN virtual network as "localnet" in the 
NAT settings of sip.conf. And I always use "directmedia=no".

> I am pushing the local route (route 172.30.29.0 255.255.255.0) and I have 
> been told that the local phone VLAN should be able to route to my Open VPN 
> subnet (172.30.253.0/24) although I have not been able to confirm.

You could add "client-to-client" to the OpenVPN server "Raw commands" and 
restart OpenVPN.
Then you should have access via your OpenVPN connection to the remote Yealink 
phone.

> So obviously this is a routing problem but I don’t quite understand what the 
> firewall does from a tun0 to eth1 routed interface e.g. reinvited and not 
> bridged to Asterisk.
> 
> Any experience or ideas anyone?
> 
> Regards
> Michael Knill

Michael

http://www.mksolutions.info




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