I wonder how IAX compares to SIP bandwidth-wise? I've tried both over overseas IP connection, and somehow SIP seemed to work better. Peter
> I wonder how IAX compares to SIP bandwidth-wise? I've tried both over > overseas IP connection, and somehow SIP seemed to work better. > > Peter >Then try making two or three or more calls at the same time.. :) If you setup IAX in trunk mode it uses the same connection for multiple voice streams and so optimises the bandwith usage by reducing the overhead per voice channel.. SIP can't do that.. Also IAX does not care about NAT so a situation like.. AST<-->NAT<-->Internet<-->NAT<-->AST ..will work fine.. SIP will have problems in a setup like this without the use of specialised NAT routers.. Later.. -- ______________________________________________ http://www.linuxmail.org/ Now with e-mail forwarding for only US$5.95/yr Powered by Outblaze
Does this thread help? http://lists.digium.com/pipermail/asterisk-users/2003-June/014788.html On Fri, Sep 19, 2003 at 01:18:53PM -0500, Peter Zeltins wrote:> I wonder how IAX compares to SIP bandwidth-wise? I've tried both over > overseas IP connection, and somehow SIP seemed to work better. > > Peter > > _______________________________________________ > Asterisk-Users mailing list > Asterisk-Users@lists.digium.com > http://lists.digium.com/mailman/listinfo/asterisk-users
> How do you set up IAX in Trunk mode? > Uriel >Add "trunk=yes" to your definition in iax.conf.. Later -- ______________________________________________ http://www.linuxmail.org/ Now with e-mail forwarding for only US$5.95/yr Powered by Outblaze
> > FYI: trunking only works in IAX2 and it requires you to have a zaptel > interface on both endpoints >I have heard that but in my setup I only have Zaptel hardware on one side and trunking appears to work fine.. Initially I tried using ztdummy on the side which didn't have zaptel hardware but this caused the trunk to break properly, without it it works fine.. Maybe I just have a freak setup.. :) Later.. -- ______________________________________________ http://www.linuxmail.org/ Now with e-mail forwarding for only US$5.95/yr Powered by Outblaze
Hello, On 19-09 19:48, WipeOut . wrote:> Also IAX does not care about NAT so a situation like.. > AST<-->NAT<-->Internet<-->NAT<-->AST > ..will work fine.. SIP will have problems in a setup like this without the use of specialised NAT routers..I am wondering how setup like this could work with IAX (or any other protocol) when symmetric NATs are used. If you have two different NATs then direct connection is not possible between hosts behind those two NATs. You have to do some kind of provisioning of the NAT boxes (i.e. port forwarding). Jan.
> > I am wondering how setup like this could work with IAX (or any other > protocol) when symmetric NATs are used. > > If you have two different NATs then direct connection is not possible > between hosts behind those two NATs. You have to do some kind of > provisioning of the NAT boxes (i.e. port forwarding). > > Jan.You setup port forwarding on your each NAT's to the server behind the NAT.. If you don't have a static IP or resolvable DNS name on one of the boxes you can get it to register with the remote side.. You will have to have the NAT's public IP on at least one side static or resolvable through some form of DNS or DDNS.. Later.. -- ______________________________________________ http://www.linuxmail.org/ Now with e-mail forwarding for only US$5.95/yr Powered by Outblaze
> Thanks, this is exactly what I was looking for. I tried experimenting with > different codecs myself, and GSM seems to be the only one that works... > neither iLBC or Speex went thru. I'm using XLite v1.x & Asterisk 0.5.0, > wonder if it's a softphone's problem? >I have got X-Lite to work with G.711 and GSM only, I have never been able to get it to work with iLBC or Speex.. I use iLBC over my IAX trunk and it works fine so I can only guess that there is some compatibility problem between X-Lite and Asterisk.. Later -- ______________________________________________ http://www.linuxmail.org/ Now with e-mail forwarding for only US$5.95/yr Powered by Outblaze