[asterisk-gui] No sound

[Bob Crandell]

That's sad.  I'll start talking to my ISP.

Thanks
Bob

On Thu, 2009-04-02 at 16:07 -0400, Matt Sales wrote:
> Bob, you're dealing with a double NATted environment with both your
> Asterisk server and phones behind firewalls.  Personally I think this
> is going to do nothing but give you headaches.  I would add a 2nd NIC
> card to your asterisk server and assign it a public IP address.  Now
> just have your softphones and hardphones register to the public IP
> address.  You will still need to set nat=yes for those remote
> extenstions in users.conf
>  
> I'm sure others will chime it that this a major security risk but if
> you use iptables to block all ports except those required by asterisk
> (SIP, IAX, & RTP) and set secure sip passwords you should be ok.
> 
> 
> On Thu, Apr 2, 2009 at 2:57 PM, Bob Crandell <bob at assuredcomp.com>
> wrote:
> 
>         I have NAT=yes through out.
>         I have both externip and localnet set. 
>         
>         
>         
>         
>         On Thu, 2009-04-02 at 00:03 -0700, Marvin Whitfield wrote: 
>         
>         > Bob,
>         > Definately a NAT issue. Had the same issues when I first started
>         > setting up remote extensions. Look in your sip.conf for externip=...
>         > and localnet=.... You'll use the to tell asterisk what's internat and
>         > what's external. Also remember to at NAT=yes to extensions that will
>         > be remote. The last thing you might need to modify is your firewall
>         > and phone settings. These vary widely by manufacturer but the general
>         > idea is that you need asterisk to be able to reach the phone that will
>         > be behind a NAT firewall so you'll probably need to forward some ports
>         > or configure the phone to keep the connection alive. Hope that helps.
>         > 
>         > --
>         > Marvin
>         > 
>         > On 4/1/09, Matt Brown (HC) <matt at mbrown.co.uk> wrote:
>         > > Hi Bob,
>         > >
>         > >> Hi guys,
>         > >>
>         > >> I've been testing softphones in Windows and SuSE.  From outside the
>         > >> office, I can make a call to a different extension and to an outside
>         > >> number but neither the caller nor the callee can hear anything.  I
>         > >> thought I was being stupid until I bought a Grandstream GXP 2020
>         > >> which wouldn't speak to me either from outside the office.  It does
>         > >> work inside the office.  I tested the softphone inside the office
>         > >> and it works too.  Ok so it's the firewall.  I have port 5060 UDP
>         > >> and 10001-20000 UDP open and pointed to the Asterisk box.  What am I
>         > >> missing?  I'm getting so close to being able to go live with this
>         > >> thing.
>         > >>
>         > >
>         > > Just double check the /etc/asterisk/rtp.conf to make sure port range
>         > > being used is correct. In addition I agree with Matt that it sounds
>         > > like a NAT issue. Take a peek at sip.conf or users.conf for the
>         > > extension in question and check nat=yes is set for that user/extension.
>         > >
>         > > Regards
>         > >
>         > > Matt Brown
>         > >
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>         > 
>         
>         
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