SIP API (JSR180) - What is good for?
Hi all!
We've started a semester thesis at the university of applied science. We wanted to build an application, that uses SIP to transfer voice from our hand device to a distant server over wireless.
Now we realised, that streaming rtsp streams from your cell phone is not possible! Is that correct!?
And if it is, what is the JSR 180 good for then? The main goal about sip should be sending voice and video. If that's no possible, what can you do with JSR 180 instead?!
I'd really appreciate some clarification ;-)
Thanks!!
[568 byte] By [
sockena] at [2007-11-27 4:23:42]
# 1
> Hi all!
>
> We've started a semester thesis at the university of
> applied science. We wanted to build an application,
> that uses SIP to transfer voice from our hand device
> to a distant server over wireless.
>
> Now we realised, that streaming rtsp streams from
> your cell phone is not possible! Is that correct!?
i tried and i failed. now, i don't know if somebody did it...
you can read the article below:
http://today.java.net/pub/a/today/2006/08/22/experiments-in-streaming-java-me.html
> And if it is, what is the JSR 180 good for then?
SIP protocol (see http://jcp.org/en/jsr/detail?id=180 )
> The main goal about sip should be sending voice and
> video. If that's no possible, what can you do with
> JSR 180 instead?!
you can try to ask to the jsr specification lead to have some clarifications...
# 2
Thanks for your comments!
> i tried and i failed. now, i don't know if somebody
> did it...
> you can read the article below:
> http://today.java.net/pub/a/today/2006/08/22/experimen
> ts-in-streaming-java-me.html
Ijust glanced at the article, will read it through later. But if I see it correctly, it's just about streaming content TO your cell phone. I'm actualy looking for a full-duplex connection...
> SIP protocol (see http://jcp.org/en/jsr/detail?id=180
> )
I know it's for SIP! My question is: If you can' send voice over SIP, what do you want to send then? Only messages?
# 3
First of all, you could use SIP for voip (wifi or over cell network) in theory, yet I haven't tried it myself.
http://discussion.forum.nokia.com/forum/archive/index.php/t-100093.html
Secondly, you can use it for IM as shown here:
Introduction to the SIP API for Java ME http://dev2dev.bea.com/pub/a/2007/05/sip-javame.html
Third it can be used for pushing info to cell phones. (SUBSCRIBE/NOTIFY)
Emmanuel
