[prev in list] [next in list] [prev in thread] [next in thread]
List: sip-implementors
Subject: Re: [Sip-implementors] Re[2]: 183 response
From: Ulrich Prakash <uprakash () netlab ! hcltech ! com>
Date: 2002-02-21 20:46:31
Message-ID: 4.3.2.7.0.20020222014324.00c05990 () 192 ! 168 ! 201 ! 1
[Download RAW message or body]
Hi,
Please find my comments inline.
At 09:47 AM 2/21/02 -0800, Lorenzo_Boffelli@alliedtelesyn.com wrote:
>___________________Reply Separator____________________
>Subject: Re: 183 response
>Author: Ulrich Prakash <uprakash@netlab.hcltech.com>
>Date: 2/20/2002 10:35 PM
>
> >> Hi,
> >> In this case,I think it creates 3 calllegs(dialogs) and hence 3 media >>
>sessions.
> >> Line.2068 of bis-07 says:
> >> "Provisional responses for an INVITE request can create "early
> >> dialogs"."
> >> Here dialogs,(and not dialog),which means more than 1 dialog is
> >> possible for a single call,which is forked.
>
>OK, I can open 3 RTP session but which RTP stream I listen.
In this case,according to the draft,3 dialogs could be established.
>All the 3 RTP stream?
>If I receive 3 "Message" and I listen the 3 message simultaneously, probably I
>don't understand anything!!!
It is left to the implementor to choose how to implement this scenario.
In this case,
We may have 3 soundcards,(with 3 different users,or a single user,who can
listen simultaneously to 3 voices!).And the 3 RTP sessions will go on in
different ports.
But again this puts a constraint on the UAC,from the implementation point
of view.
The UAC does not know,before hand, to how many branches the Proxy forks,
and how many UASs are going to respond.
Does anyone have any suggestions/inputs on this?
Please let me know I had misunderstood.
Thanks,
Ulrich Prakash.
>Let me know you opinion.
>Thanks
>Lorenzo
>
>P.S. Excuse me for my bad english!!
>
>
>
>
>
>
>
>
>
>
>
>---------------------------------------------
>At 11:57 AM 2/20/02 -0800, you wrote:
>
> >Hi,
> >Suppose to use a SIP Proxy Server that make a call forking.
> >
> >UserA call UserB and Proxy forks the call to UserB1, UserB2 and UserB3
> >Suppose UserB1, UserB2 and UserB3 respond with a 183 code with SDP.
> >UserA receive tree 183 message with 3 different SDP and it has to open
> the RTP
> >channel. Which SDP it must use?
> >
> >Thanks
> >Lorenzo
> >
> >
> >___________________________________________
> >
> >Lorenzo Boffelli
> >STRE Engineer
> >
> >Allied Telesis K.K.
> >Head Office / 4F TOC Bldg, 7-22-17 Nishi-Gotanda,
> >Shinagawa-ku, Tokyo Japan, 141-8635
> >European R&D Center
> >Piazza Tirana, 24/4 b Phone: +39 02 41411201
> >20147 Milano Fax: +39 02 41411260
> >ITALY
> >Email: lorenzo_boffelli@alliedtelesyn.com
> >___________________________________________
> >_______________________________________________
> >Sip-implementors mailing list
> >Sip-implementors@cs.columbia.edu
> >http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
>
>Hi,
>In this case,I think it creates 3 calllegs(dialogs) and hence 3 media
>sessions.
>Line.2068 of bis-07 says:
>"Provisional responses for an INVITE request can create "early dialogs"."
>Here dialogs,(and not dialog),which means more than 1 dialog is possible
>for a single call,which is forked.
>
>At 11:57 AM 2/20/02 -0800, you wrote:
>
>>Hi,
>>Suppose to use a SIP Proxy Server that make a call forking.
>>
>>UserA call UserB and Proxy forks the call to UserB1, UserB2 and UserB3
>>Suppose UserB1, UserB2 and UserB3 respond with a 183 code with SDP.
>>UserA receive tree 183 message with 3 different SDP and it has to open
>>the RTP
>>channel. Which SDP it must use?
>>
>>Thanks
>>Lorenzo
>>
>>
>>___________________________________________
>>
>>Lorenzo Boffelli
>>STRE Engineer
>>
>>Allied Telesis K.K.
>>Head Office / 4F TOC Bldg, 7-22-17 Nishi-Gotanda,
>>Shinagawa-ku, Tokyo Japan, 141-8635
>>European R&D Center
>>Piazza Tirana, 24/4 b Phone: +39 02 41411201
>>20147 Milano Fax: +39 02 41411260
>>ITALY
>>Email: lorenzo_boffelli@alliedtelesyn.com
>>___________________________________________
>>_______________________________________________
>>Sip-implementors mailing list
>>Sip-implementors@cs.columbia.edu
>>http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors< /a>
>
>_______________________________________________
>Sip-implementors mailing list
>Sip-implementors@cs.columbia.edu
>http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
[Attachment #3 (text/html)]
<html>
Hi,<br>
Please find my comments inline.<br>
<br>
At 09:47 AM 2/21/02 -0800, Lorenzo_Boffelli@alliedtelesyn.com
wrote:<br>
<br>
<blockquote type=cite cite>___________________Reply
Separator____________________<br>
Subject: Re: 183 response<br>
Author: Ulrich Prakash <uprakash@netlab.hcltech.com><br>
Date: 2/20/2002 10:35 PM<br>
<br>
>> Hi,<br>
>> In this case,I think it creates 3 calllegs(dialogs) and hence 3
media >><br>
sessions.<br>
>> Line.2068 of bis-07 says:<br>
>> "Provisional responses for an INVITE request can create
"early <br>
>> dialogs"."<br>
>> Here dialogs,(and not dialog),which means more than 1 dialog is
<br>
>> possible for a single call,which is forked.<br>
<br>
OK, I can open 3 RTP session but which RTP stream I
listen.</blockquote><br>
In this case,according to the draft,3 dialogs could be established.<br>
<br>
<blockquote type=cite cite>All the 3 RTP stream? <br>
If I receive 3 "Message" and I listen the 3 message
simultaneously, probably I<br>
don't understand anything!!!</blockquote><br>
It is left to the implementor to choose how to implement this
scenario.<br>
<br>
In this case,<br>
We may have 3 soundcards,(with 3 different users,or a single user,who can
listen simultaneously to 3 voices!).And the 3 RTP sessions will go on in
different ports.<br>
But again this puts a constraint on the UAC,from the implementation point
of view.<br>
The UAC does not know,before hand, to how many branches the Proxy
forks,<br>
and how many UASs are going to respond.<br>
<br>
Does anyone have any suggestions/inputs on this?<br>
<br>
Please let me know I had misunderstood.<br>
<br>
Thanks,<br>
Ulrich Prakash.<br>
<br>
<blockquote type=cite cite>Let me know you opinion.<br>
Thanks<br>
Lorenzo<br>
<br>
P.S. Excuse me for my bad english!!<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
---------------------------------------------<br>
At 11:57 AM 2/20/02 -0800, you wrote:<br>
<br>
>Hi,<br>
>Suppose to use a SIP Proxy Server that make a call forking.<br>
><br>
>UserA call UserB and Proxy forks the call to UserB1, UserB2 and
UserB3<br>
>Suppose UserB1, UserB2 and UserB3 respond with a 183 code with
SDP.<br>
>UserA receive tree 183 message with 3 different SDP and it has to
open the RTP<br>
>channel. Which SDP it must use?<br>
><br>
>Thanks<br>
>Lorenzo<br>
><br>
><br>
>___________________________________________<br>
><br>
>Lorenzo Boffelli<br>
>STRE Engineer<br>
><br>
>Allied Telesis K.K.<br>
>Head Office / 4F TOC Bldg, 7-22-17 Nishi-Gotanda,<br>
>Shinagawa-ku, Tokyo Japan, 141-8635<br>
>European R&D Center<br>
>Piazza Tirana, 24/4 b Phone: +39 02 41411201<br>
>20147 Milano
Fax: +39 02 41411260<br>
>ITALY<br>
>Email: lorenzo_boffelli@alliedtelesyn.com<br>
>___________________________________________<br>
>_______________________________________________<br>
>Sip-implementors mailing list<br>
>Sip-implementors@cs.columbia.edu<br>
><a href="http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors" \
eudora="autourl">http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors</a><br>
<br>
Hi,<br>
In this case,I think it creates 3 calllegs(dialogs) and hence 3 media
sessions.<br>
<font face="Times New Roman, Times">Line.2068 of bis-07 says:<br>
"Provisional responses for an </font>INVITE
<font face="Times New Roman, Times">request can create "early
dialogs"."<br>
</font>Here dialogs,(and not dialog),which means more than 1 dialog is
possible for a single call,which is forked.<br>
<br>
At 11:57 AM 2/20/02 -0800, you wrote:<br>
<br>
<blockquote type=cite cite>Hi,<br>
Suppose to use a SIP Proxy Server that make a call forking.<br>
<br>
UserA call UserB and Proxy forks the call to UserB1, UserB2 and
UserB3<br>
Suppose UserB1, UserB2 and UserB3 respond with a 183 code with SDP.<br>
UserA receive tree 183 message with 3 different SDP and it has to open
the RTP<br>
channel. Which SDP it must use?<br>
<br>
Thanks<br>
Lorenzo<br>
<br>
<br>
___________________________________________<br>
<br>
Lorenzo Boffelli<br>
STRE Engineer<br>
<br>
Allied Telesis K.K.<br>
Head Office / 4F TOC Bldg, 7-22-17 Nishi-Gotanda,<br>
Shinagawa-ku, Tokyo Japan, 141-8635<br>
European R&D Center<br>
Piazza Tirana, 24/4 b Phone: +39 02 41411201<br>
20147 Milano
Fax: +39 02 41411260<br>
ITALY <br>
Email: lorenzo_boffelli@alliedtelesyn.com<br>
___________________________________________<br>
_______________________________________________<br>
Sip-implementors mailing list<br>
Sip-implementors@cs.columbia.edu<br>
<a href="http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors" \
eudora="autourl">http</a>://lists.cs.columbia.edu/mailman/listinfo/sip-<a \
href="http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors" \
eudora="autourl">implementors</a>< /a> </blockquote><br>
_______________________________________________<br>
Sip-implementors mailing list<br>
Sip-implementors@cs.columbia.edu<br>
<a href="http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors" \
eudora="autourl">http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors</a> \
</blockquote></html>
[prev in list] [next in list] [prev in thread] [next in thread]
Configure |
About |
News |
Add a list |
Sponsored by KoreLogic