asterisk users - Mar 2016 - Differences between Chan_SIP and PJSIP with NAT and STUN

I'm dialling from the snom and every few calls asterisk sends media to the
phones external IP and it works!

And then now and again it sends the media to the phones internal IP and I
hear nothing. I'm really at a loss.
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Chirag Desai wrote:
> I'm dialling from the snom and every few calls asterisk sends media to
> the phones external IP and it works!
>
> And then now and again it sends the media to the phones internal IP and
> I hear nothing. I'm really at a loss.
In the non-working case check the IP address in the SDP, if it's the 
external then we've told the phone to send it to the right place. After 
that do a packet capture and see if the packets are arriving on the 
machine. If not then look outside the machine at things.

-- 
Joshua Colp
Digium, Inc. | Senior Software Developer
445 Jan Davis Drive NW - Huntsville, AL 35806 - US
Check us out at: www.digium.com & www.asterisk.org

In the PCAP I can see asterisk sending UDP packets to my local IP
192.168.0.5....

It's funny, when I switch to TCP on 5060 audio seems to work fine. The
moment I go to 5063 on TLS everything goes a bit awry. Any further input is
greatly appreciated.
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Chirag Desai wrote:
> In the PCAP I can see asterisk sending UDP packets to my local IP
> 192.168.0.5....
If you don't see anything arriving from the remote side and we've told 
them the right IP address and ICE is not actually negotiated... then 
that leans more towards something remote unless there actually is a 
firewall.

-- 
Joshua Colp
Digium, Inc. | Senior Software Developer
445 Jan Davis Drive NW - Huntsville, AL 35806 - US
Check us out at: www.digium.com & www.asterisk.org

So I see:

EXTERNAL_SNOM_IP -> EXTERNAL_ASTERISK_IP   (UDP,  length 218, src: 60798,
dst 11128)

EXTERNAL_ASTERISK_IP -> INTERNAL_SNOM_IP   (UDP, length 218, src: 11128 dst
60478

So i see udp from the phone, but there's no audio.


I do also see some packets ::

EXTERNAL_ASTERISK_IP -> EXTERNAL_SNOM_IP (ICMP, length 246, Destination
unreachable (Host administratively prohibited)
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