[asterisk-users] Phone -> NAT/FIREWALL -> Internet -> NAT/Firewall-> Asterisk

[Nick Olsen]

I believe you're correct. And that should be the correct setting.

However, You may want to do a packet sniff and confirm you're seeing the 
actual traffic as expected. Being that you see timeouts on the asterisk 
side. My bet is the rtp/sip traffic is going toward the device on a port 
it's not expecting. Or, The NAT device doesn't have a mapping for and being 
dropped at one of your routing devices.

Nick Olsen
 Network Operations 
(855) FLSPEED  x106

----------------------------------------
From: "John Millican" <john at millican.us>
Sent: Thursday, January 02, 2014 11:07 AM
To: asterisk-users at lists.digium.com
Subject: Re: [asterisk-users] Phone -> NAT/FIREWALL -> Internet -> 
NAT/Firewall-> Asterisk

top posting so as to not make thread even more confusing.

Nick,
I have nat=force_rport,comedia in sip.conf.  It is my understanding that
nat=yes is deprecated?

Thanks,
JohnM

On 01/02/2014 10:51 AM, Nick Olsen wrote:
> Make sure you have nat=yes in your sip.conf either under globals or
> individual sip peer settings.
> 
> Nick Olsen
> Network Operations
> (855) FLSPEED  x106
> 
> 
> 
> ------------------------------------------------------------------------
> *From*: "John Millican" <john at millican.us>
> *Sent*: Thursday, January 02, 2014 10:50 AM
> *To*: "Asterisk Users Mailing List - Non-Commercial Discussion"
> <asterisk-users at lists.digium.com>
> *Subject*: [asterisk-users] Phone -> NAT/FIREWALL -> Internet ->
> NAT/Firewall-> Asterisk
> 
> Hello,
> CentOS 6.x and Asterisk 11.x
> I have an interesting, to me at least, situation. Using a Polycom
> 501(also tried with X-Lite). I have set up Asterisk to accept
> registration from the Polycom and it registers successfully but then
> withing 30 seconds on the CLI I get the message that the Polycom is
> unreachable. The phone still shows that it is registered and if I try
> to place a call from the phone to my Cell, my cell rings once and then
> stops. I get a packet retransmission error:
> WARNING[1303]: chan_sip.c:4174 retrans_pkt: Retransmission timeout
> reached on transmission 689874757 at 192.168.0.100 for seqno 2 (Critical
> Response)
> Followed by:
> n_sip.c:4203 retrans_pkt: Hanging up call xxxxxxxxxx at 192.168.0.100 - no
> reply to our critical packet
> I am "assuming" that there is a problem with NAT. I have externip set
> in sip.conf.
> Any pointers to what I am missing?
> Thanks,
> JohnM
> 
> 
> -- 
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