[kwlug-disc] Asterisk: SIP vs IAX
rarsa at yahoo.com
Fri Feb 4 10:00:53 EST 2011
That answers my question. SIP it is.
You even answered questions I didn't even ask (but I should have)
I didn't consider that charges would apply If I peered the Mexican phone through Unlimitel, Thank you for setting me straight.
I've had a DynDNS for several years now, always working OK. I didn't think of one for the Android. I currently had the IP to "Dynamic" but I can see the advantage of DynDNS.
I've forwarded ports 10000 - 20000 and 5060 to my Asterisk server (Running barebones Debian 5)
I also thought about routing through VPN so no Asterisk ports would be open in the wild.
I'll check voip.ms when I get home. It is blacklisted at the office "voip telephony". I guess they should have a different domain for their web site than their SIP URL :)
Software, Hardware and Practices
An eclectic collection of random thoughts
--- On Fri, 2/4/11, L.D. Paniak <ldpaniak at fourpisolutions.com> wrote:
> From: L.D. Paniak <ldpaniak at fourpisolutions.com>
> Subject: Re: [kwlug-disc] Asterisk: SIP vs IAX
> To: "KWLUG discussion" <kwlug-disc at kwlug.org>
> Received: Friday, February 4, 2011, 9:34 AM
> SIP is almost always the best
> answer. IAX is technically better, but I
> find it often has glitches with maintaining
> registration. It is
> designed mainly as an Inter-Asterisk eXchange for joining
> together, not for client-end equipment (though it has some
> for that too when (eg.) your ISP is not SIP-friendly).
> www.voip.ms has Mexican numbers with servers in Toronto for
> This might be a better option for you.
> If you have Asterisk at home, why don't you have your
> number/trunk terminate there and then you can route calls
> as you wish-
> even put in an IVR: "Press one for Raul, press two for
> grandson A ..."
> Putting Mexican calls over Unlimitel will double your
> Your Android should be able to connect to your home server
> if it has a
> public IP. Dyndns will help you to identify it if the
> IP is not static.
> I also run a dyndns client on my Android so that the server
> whitelist traffic from the phone. Ideally, when I get
> VPN running on my
> phone, I hope to put VoIP and other traffic in the
> tunnel. Not sure if
> performance will be acceptable in that configuration.
> On Thu, 2011-02-03 at 21:23 -0800, Raul Suarez wrote:
> > So, here I am, ready to take the plunge. About to
> embark in my own Asterisk adventure.
> > I say "about" instead of "ready" because after reading
> I think I'm just left with one question.
> > When I was about to order from Unlimitel, they ask
> "SIP or IAX?"
> > When I installed and tested Asterisk using extensions
> I saw several samples for IAX and I even successfully
> connected to ekiga.net through SIP.
> > All I've read is about SIP, but when I googled SIP vs.
> IAX it seems that IAX is a native Asterisk protocol with
> many advantages for someone like me but a few disadvantages.
> > Most of the help I found is about SIP.
> > To "complicate" the matters, Unlimitel does not offer
> Virtual # in Mexico, so I'm planning to go with Unlimitel
> for my local line and with http://www.mydivert.com. ($12 CAD) for a
> local Mexican number.
> > They say that "Can I peer my DID number to an IAX
> > Yes. We can send calls using SIP or IAX protocol."
> > Now, I don't know which one to choose. IAX seems like
> a better option for me, but I don't know if the
> disadvantages can tip the scale in favour of SIP.
> > Here are my simple requirements
> > 1 asterisk server inside my home network (10 Mbps)
> > 1 ATA connected to a wireless phone to be the default
> inbound extension.
> > 3 or 4 Android phones with a VoIP app (Currently
> working well with SIP)
> > I want to be able to allow the phones to connect to
> the PBX even when they are outside the network (e.g. when
> they are in the university network) and make phone calls
> through my local line.
> > The "mydivert" phone will be peered directly to
> Unlimitel according to their FAQ so I don't need to
> configure it on my side. (although I guess I could)
> > "Geographical DID numbers purchased at MyDivert.com
> can also be used with your own SIP provider. Simply update
> your phone number SIP settings from your MyDivert user
> > All incoming calls will then ring to your chosen SIP
> without diversion."
> > So the question is very simple SIP or IAX?
> > And if I choose one over the other, is that definitive
> or can I change it later?
> > Raul Suarez
> > Technology consultant
> > Software, Hardware and Practices
> > _________________
> > Twitter: rarsamx
> > http://rarsa.blogspot.com/
> > An eclectic collection of random thoughts
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