On 25/12/14 15:43, Joseph wrote:
> I've installed "zoiper" (this is an softphone app to connect to my
> Asterisk server) on my old phone and it works on my private network over
> wifi.
> I'm using standard IAX port 4569 to register, so this port is open on my
> firewall.
> 
> But when I catch an open public wifi network in a Mall or a Tim Horton
> "zoiper" failed to register.
> 
> Do they block outgoing ports of public WiFi networks? What are my
> alternatives?
> 
> I can open any port on my DD-Wrt and redirect it to my Asterisk server.
> 

Quite often happens in this part of the world.  I run an openvpn ssl vpn
on port 443 with an ssl multiplexor on the server end - route all the
voip traffic through the vpn.  Doesnt work well if bandwidth is really
constrained but its the difference between having at least something or
nothing at all.

BillK



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