[arm-allstar] Setting up node on Cellular connection

[Mike Sullivan]

All, we are switching from a Windows RF-based Echolink setup to Asterisk
Allstar with Echolink directly tied into the controller using a RIM-RC210
interface. We are using a Verizon cellular hotspot for our internet
connection as we have for the past couple years (cheapest landline we can
get is $90/mo for DSL on a "commercial property" I told them where to stick
it) and currently I am focused on getting Echolink configured to bring it
back online. The node is registering with Echolink, but it will not allow a
connection. On the Windows based setup, we had to use Echolink Proxy with
the proxy on my personal VDS server to get it to work properly. However,
from what I understand, the package does not support Echolink Proxy, so we
need to find a workaround.

As the configuration stands, the modem (Verizon SmartHub) is configured to
DMZ our router's WAN IP (TPLink router/AP combo) and the appropriate ports
are forwarded on the router for our RPi node. I have made several attempts
to connect from PC, phone, and had other users attempt to connect, but all
are timing out. I'm not sure if Verizon is still blocking the needed ports
or not.

I know through the configuration file that there is some form of proxy
support, but I'm not sure if that's more of an Asterisk based proxy, or a
general proxy (I'm fairly new to using RPi's and of course the image) and
I've also seen support for OpenVPN, but I have had such a nightmare trying
to configure it. Would anyone have any tips/tricks on what to do? Or would
anyone know if there will be Echolink Proxy support perhaps down the road?

Mike Sullivan