On Sun, 2015-02-01 at 18:20 +0000, Jon Gerdes wrote:
> On Sun, 2015-02-01 at 17:56 +0000, Jon Gerdes wrote:
> > > 
> > > I can get the soft phone on the workstation to work through the
> > > firewall to register to the asterisk server  and make call to the LAN
> > > phone but cannot get the cisco phone to work to do the same.  I have
> > > tried also turning on SIProxd and nothing changes.  Any help would be
> > > much appreciated
> > > 
> > Investigate "Symmetric RTP".
> 
> Whoops, sorry - that is unlikely to help.  One possibility is to get the
> second phone that isn't working to use a different port eg 5061 for SIP.
> 
> Your ASCII art got munged up somewhere (probably by my mail client) so
> it is hard to see what is going on.

OK - do you really need NAT?  It looks as though you are NATing from WAN
to LAN but this is not needed.

Assuming that everything in the diagram is all that we need to worry
about:

* Set advanced NAT (done already I think)
* Remove all NAT rules - inbound and outbound

For this sort of thing you should never need a SIP proxy or anything
else for that matter.  Just some holes for SIP and RTP.

Cheers
Jon
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