asterisk users - Aug 2007 - Can't create audio conversation between softphonesthrough Asterisk

Hi, 

In the early stages of deciding how to try and develop this environment, I
looked at all the protocols that could be used. SIP was chosen just because it
seemed to me that it was the most widely used protocol. I believe IAX is a new
protocol with a little less documentation and examples. The good thing about
this Jain-sip-phone is that it saves a lot of time since many of the important
classes are more or less written already. In short, my goal is to create a
custom softphone GUI interface. I am using this Jain-sip-phone as an example, so
that I could learn the SIP protocol/RTP transmission better.

I have not really started altering much of the code yet because I was trying to
see if it would run as is, so I have not tried dialing the Jain clients without
a subscription. I believe Asterisk does accept subscription requests, but for
some reason it doesn't like this one. I will soon start to experiment with
the source code.

 
Thanks, 

Denis

-----Original Message-----
From: Gerald A [mailto:geraldablists at gmail.com]
Sent: Monday, August 27, 2007 9:30 AM
To: Kutman DK at ADM(Mat) DAEPM(R&CS)@Ottawa-Hull
Subject: Re: [asterisk-users] Can't create audio conversation between
softphonesthrough Asterisk


Hi,


On 8/27/07, Kutman.DK at forces.gc.ca < Kutman.DK at forces.gc.ca > wrote:


Thanks for the reply.  I have a small LAN network which I have connected with an
Asterisk server.  My Asterisk box and the user pc's are connected through a
LAN switch.  This network is not connected to the internet.  The
"UNREACHABLE" message does seem to point to what you mentioned below
(Asterisk not being able to ping the phones), which seems weird to me.  When I
use X-Lite softphones on those user pc's, I can connect them to the Asterisk
server fine and make calls.  The subscription occurs when I try to add another
contact(In the same LAN network) from one of the user pc's.  I am attaching
the console results that I get within Eclipse when I run this softphone.


Ok, one more silly question --  might it be possible to do this with IAX? (I
tend to lean on IAX for things, as it's more versitile and robust, if not so
widely deployed).

I'm not sure exactly what you are trying to accomplish, so I'm focusing
on the questions you are having issues with. A bit of context might show up as
another solution, though -- if you are able to provide it.

I don't have time right now to dig through the traces, but I have a related
question. Have you ever got a call to go through dialling from one Jain client
to the other, without the subscription?

My gut feeling is that there might be a basic config issue with the Jain client
that is causing an issue, as what you want to do doesn't sound too
difficult.

Thanks,
Gerald.


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Hi,

On 8/27/07, Kutman.DK at forces.gc.ca <Kutman.DK at forces.gc.ca>
wrote:
>
>
> In the early stages of deciding how to try and develop this environment, I
> looked at all the protocols that could be used. SIP was chosen just because
> it seemed to me that it was the most widely used protocol. I believe IAX is
> a new protocol with a little less documentation and examples. The good
thing
> about this Jain-sip-phone is that it saves a lot of time since many of the
> important classes are more or less written already. In short, my goal is to
> create a custom softphone GUI interface. I am using this Jain-sip-phone as
> an example, so that I could learn the SIP protocol/RTP transmission better.
>
The reason I asked is because IAX works better through firewalls and is
easier to troubleshoot. It's not as widely deployed as SIP, but it does work
around some major things that SIP makes harder.
I'm not sure of the quality or lineage of the  JAIN application code, so
can't comment if it's a good jumping off point.

I have not really started altering much of the code yet because I was
trying
> to see if it would run as is, so I have not tried dialing the Jain clients
> without a subscription. I believe Asterisk does accept subscription
> requests, but for some reason it doesn't like this one. I will soon
start to
> experiment with the source code.
>
Subscription is used for presence. It can be used in an IM type app, or to
"light up" a button on a  phone when someone is busy.
It shouldn't be needed to exchange a call though, and if you can do it
without the subscription piece then it could help to pin down
the issue you are having. (It might be _just_ the subscribe that is having
an issue).

I should have time later this afternoon to check your traces, and I'll try
and give Jain a kick.

Thanks,
Gerald.
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