SIP negotiates the port numbers it will use for voice for each call. The call setup is done via port 5060 but the voice packets use dynamically allocated ports and so firewalls don't know what ports to deal with when doing NAT. IAX does NOT negotiate the port numbers for the voice stream, it always uses the same port number.
On Wed, 2003-08-06 at 14:27, William Flanagan wrote: > All- > > Why is this the case? Is it that it uses TCP? Is it the protocol? Is it > that it works better through NATs? Is it just more mature than the SIP or > MGCP implementation? What's the reason for it? A protocol is a protocol in > my book. I'm trying to understand why the IAX protocol would work sooo much > better. > > Thanks, > > William > > ----- Original Message ----- > From: "Dan" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Wednesday, August 06, 2003 2:04 PM > Subject: Re: [Asterisk-Users] Windows IAX soft phone > > > > Not better.... A LOT BETTER... > > > > ;-) > > Dan > > > > ----- Original Message ----- > > From: "William Flanagan" <[EMAIL PROTECTED]> > > To: <[EMAIL PROTECTED]> > > Sent: Wednesday, August 06, 2003 8:21 PM > > Subject: Re: [Asterisk-Users] Windows IAX soft phone > > > > > > > Hey all, > > > > > > Why does the IAX client have better reliabilty than a SIP client? I'm > > just > > > curious. > > > > > > William > > > > > > ----- Original Message ----- > > > From: "Dan" <[EMAIL PROTECTED]> > > > To: <[EMAIL PROTECTED]> > > > Sent: Wednesday, August 06, 2003 2:53 AM > > > Subject: Re: [Asterisk-Users] Windows IAX soft phone > > > > > > > > > > Hi, > > > > > > > > It is great. > > > > I works far better than any other software phone (X-Lite or SJPhone) > > when > > > > you are over an unreliable connection. > > > > > > > > Thanks, > > > > Dan > > > > P.S. A local volume control (mic and speaker) and source selector > will > > be > > > a > > > > great add-on. > > > > > > > > ----- Original Message ----- > > > > From: <[EMAIL PROTECTED]> > > > > To: <[EMAIL PROTECTED]> > > > > Sent: Tuesday, August 05, 2003 8:22 AM > > > > Subject: Re: [Asterisk-Users] Windows IAX soft phone > > > > > > > > > > > > > yep... iaxclient.sf.net > > > > > > > > > > - wasim > > > > > > > > > > On Wed, 6 Aug 2003, Dan wrote: > > > > > > > > > > > There is any Windows IAX based soft phone available? > > > > > _______________________________________________ > > > > > Asterisk-Users mailing list > > > > > [EMAIL PROTECTED] > > > > > http://lists.digium.com/mailman/listinfo/asterisk-users > > > > > > > > > > > > > > > > > > _______________________________________________ > > > > Asterisk-Users mailing list > > > > [EMAIL PROTECTED] > > > > http://lists.digium.com/mailman/listinfo/asterisk-users > > > > > > > _______________________________________________ > > > Asterisk-Users mailing list > > > [EMAIL PROTECTED] > > > http://lists.digium.com/mailman/listinfo/asterisk-users > > > > > > > _______________________________________________ > > Asterisk-Users mailing list > > [EMAIL PROTECTED] > > http://lists.digium.com/mailman/listinfo/asterisk-users > > > _______________________________________________ > Asterisk-Users mailing list > [EMAIL PROTECTED] > http://lists.digium.com/mailman/listinfo/asterisk-users -- BTEL Consulting 850-484-4535 x2111 (Office) 504-595-3916 x2111 (Experimental) 877-552-0838 (Backup Phone) _______________________________________________ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users
