[arm-allstar] Newbie dumb questions :-)

[Chuck Munro]

Hello list,

I am currently setting up a pair of RaspPi-3B+'s with the DFM Technology 
CM119 Hats for use as the two end points of a 10 Meter FM repeater.  The 
TX and RX sites are separated by several kilometers to avoid the need 
for a monster duplexer.  Hamvoip is up to date.

The two RaspPi's are connected via an OpenVPN server running on a 
central pfSense firewall dedicated to the task.  All network connections 
are wired to avoid any potential issues caused by WiFi.  High-speed 
300Mbit Internet works well.

So .... I have configured (so far):

- Full remote access to both Pi's using the VPN on a Mac and on my iPad 
over LTE.  The menus and bash shells work with no issues at all.

- The firewall is configured to pass TCP ports 222 and 4569-4570, plus 
ICMP echo/reply on VPN and LAN.    Do I need others ??

- RX and TX RaspPi IP addresses are within the same VPN subnet, DNS 
lookup and ping by hostname works.

- The 'node_lookup_method' is set to dns for both nodes.

- RX and TX private node numbers are set.

- Just in case, I set the RX and TX iax ports to different values even 
though they are on different IP addresses.  Windows access is not 
required.  No phone patch.

- To summarize ...

      Repeater RX Site:                          Repeater TX Site:

          Hostname  10mpi3rx                   Hostname  10pi3tx

          IP  172.x.y.74                               IP 172.x.y.78

          Node# 1800                                 Node# 1900

          iax Port 4569                               iax Port 4570

          duplex=2                                     duplex=2

That seemed like pretty obvious stuff to me, but then it got murky ... 
the documentation isn't all that intuitive.

For the files in the  /etc/asterisk  directory, what other settings do I 
need to configure in order to have the two nodes talking with each 
other?  I have searched around the forums but nothing straightforward 
has appeared.  I'm particularly interested in the various  .conf  files, 
which I would prefer to edit manually so that I understand Asterisk a 
bit better.

Does anyone have a list of specific Repeater node-to-node configuration 
settings in the various config files?  That would be greatly 
appreciated.  It looks like I need to edit the extensions.conf  file as 
well as iax and rpt.   Sorry for being a bit dense ... it's a steep 
learning curve.

For what it's worth, I have many years experience with Linux admin, so 
dealing with command line and manual configs is preferred.

Many thanks in advance!

73,   Chuck     VA7UL