ONE WAY audio problem!

General Help
1

I am having a ONE WAY Audio problem

According to a Nerd Vittles tutorial I know that the sip_custom.conf file needs to be modified to avoid this kind of issues.
I did it but, as the problems persist, I am not sure if I did it OK.

My network is as follows:

My ISP give me an dinamic IP service so I use dynDNS (elfele.selfip.net)

I have a router (from my ISP, I can not get rid of it) configured 192.168.1.0/255.255.255.0
This router asign fixed ip 192.168.1.34 to other router at 192.168.0.1/255.255.255.0
Asterisk is at 192.168.0.100 and my PC with a softphone at 192.168.0.101

So, I have configured sip_custom.conf as follows:
externhost=elfele.selfip.net
localnet=192.168.0.0/255.255.255.0

but I have a One Way Audio problem. When I call any extension in my network It works ok. but when I dial to an extension loged in from outside I can hear but they don’t.

Any help?

Thanks in advance!

Best regards.

2

Make sure all of the appropriate ports are opened in the router as well as any firewall in the soft phone computer.

BF

3

yes,
the first router opens a DMZ to 192.168.1.34 and the second opens a DMZ to 192.168.0.100 where Asterisk is.