[asterisk-users] Same provider - IAX sounds bad, SIP sounds great

[Kevin P. Fleming]

On 02/29/2012 08:22 AM, Alejandro Imass wrote:

> We use the HT-286, the server is on a public IP the nat setting on
> asterisk is set to yes and without port re-direction the ATAs have
> never connected from a private network, so I honestly find this "SIP
> plug and play" very hard to believe. But if it is true, then maybe you
> can actually help us figure out all the NAT issues we've had with SIP
> for the past 5 years. Perhaps, it is simply ignorance on our side and
> we have something fundamentally wrong in our set-up somewhere that may
> be have been causing these issues with NAT.

The number of 'plain' SIP endpoints deployed behind consumer-grade NAT 
devices talking to Asterisk servers on public IP addresses is in the 
millions, if not the tens of millions. As has already been posted, 
Asterisk itself handles all the far-end NAT traversal duties necessary 
for this to work; neither the remote endpoint nor the NAT device need to 
do anything special, nor do they require any configuration.

Rather than post a lengthy exposition on how widespread your network is 
and how technically astute your people are, you would probably 
accomplish much more to setup a simple test scenario as has been 
previously suggested, and if it does not work for you, post the details 
of the scenario and the failure here.

-- 
Kevin P. Fleming
Digium, Inc. | Director of Software Technologies
Jabber: kfleming at digium.com | SIP: kpfleming at digium.com | Skype: kpfleming
445 Jan Davis Drive NW - Huntsville, AL 35806 - USA
Check us out at www.digium.com & www.asterisk.org