Problem access my server from outside connection

Asterisk Asterisk Support
1

Hi!

I have just installed asterisknow and got it working internal on my LAN at home. I have tested it with a soft phone on the pc and my nokia n95 cell phone and I can make calls between them.

When I tried with my cell phone from an external internet connection the phone indicates that it’s registered with the asterisk server, but when I’m trying to make a call to a local extension on the server it won’t work. I hear nothing in the phone and after a while the call gets disconnected.

The server is behind a NAT so I have tried to open port 5060 and forward it to the internal ip of the asterisk server, but the only thing that is working is to register the phone. Do I need to open and forward some more ports? Or is there something else I have missed?

//Oscar

2

have you forwarded RTP packets to your * box??? RTP is your actual voice media…Hope this helps.

RTP ports are defined in /etc/asterisk/rtp.conf

default is 10000-20000.

no need to open all 10,000 ports. 20 or 25 ports is more than enough for a small environment.

3

I got a little bit further.
If a client (softphone) inside the nat connects to *box and a client (softphone) connects to the *box. They can communicate and make calls to each outer.

The outside softphone can here the inside softphone but not the outher way arround. What can causing this problem ?

4

woohooo
i got it working.
Had to add my own externa ip adress in the sip.conf file and after that it’s working

5

Uh! Could you tell me where did you add it?

6

Juste added in the file so it now looks like this

context=default
allowoverlap=no
bindport=5060
bindaddr=0.0.0.0
srvlookup=yes
externip=xxx.xxx.xxx.xxx
nat=yes
localnet=yyy.yyy.yyy.yyy/255.255.255.0

Where xxx is my external ip adress and yyy is the internat adress

7

Ah ok…i see thank you…