[Asterisk-Users] Asterisk and Broadvoice, no incoming voice

[Terry Evans]

It also sounds like some type of NAT issue to me, but I can't figure
out what's going wrong.  I changed the RTP ports back to 10000-20000
and set the router up to forward those, but still no incoming voice.

Kevin suggest I try the two inbound sections in the sip.conf, but I
had already tried them prior to my previous post.  I've tried lots of
combinations of sip.conf files I could find in this mailing list, but
none of them seem to work for me for some reason.

Terry


On Sat, 23 Oct 2004 17:39:12 -0600 (MDT), Greg Hill
<gregh-asterisk at hillnet.us> wrote:
> It really sounds like a NAT problem to me.. If your NAT supports the
> notion of a "DMZ host" then give that a try. Or if the NAT has some sort
> of logging feature to let you know when the nat receives unexpected
> packets and discards them, then look through the log. It may be that BV
> isn't sending RTP in the 20000-21000 port range, and that these packets
> are being dropped by the NAT. Outgoing RTP (voice) would work fine, of
> course, because the NAT is designed to work that direction.
> 
> FYI, I just placed a call to my BV number and ran 'netstat -nupa'. UDP
> connections showed up on ports 14704, 14705, 19838, 19839. These
> disappeared when I hung up the call.
> 
> While it might be a config issue, I'm inclined to believe that NAT is
> making life unpleasant for you.
> 
> Greg
> 
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