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Today's Topics:
1. Subhash is your Yaar!  (Subhash)
2. Re: Response messages & Protocol (Govindraj.B.H
Gkk)
3. Re: Does anybody know the reason why the calling get
connected while no ringing in a (erol turac)
4. Re: Does anybody know the reason why the calling get
connected while no ringing in a
(=?gb2312?B?tPMgxODIyw==?=)
------------------------------------------------------------
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Message: 1
Date: Sun, 2 Sep 2007 21:28:09 -0500
From: Subhash <subhashchandra25gmail.com>
Subject: [SIPForum-discussion] Subhash is your Yaar!
To: discussionsipforum.org
Message-ID: <0211f20958c491446b13b59d69ad5c8clocalhost.localdomain>
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Message: 2
Date: Mon, 3 Sep 2007 07:09:37 +0100 (BST)
From: "Govindraj.B.H Gkk"
<govindraj_hyahoo.co.in>
Subject: Re: [SIPForum-discussion] Response messages &
Protocol
To: Vijay T <vijaycecyahoo.co.in>,
discussionsipforum.org
Message-ID: <277936.33384.qmweb8403.mail.in.yahoo.com>
Content-Type: text/plain; charset="iso-8859-1"
Hi Vijay plz see the inline comments below for 2nd Qstion.
And for the 1st Q, i think not sure.
If the called party is busy then u will get 486 and if the
N/W is busy u will get 600.
Resalath can u have explain it in detail.
Regards
Govindraj B H
Vijay T <vijaycecyahoo.co.in> wrote:
Dear ALL
1.What is the difference between 486-Busy Here and
600-Busy Everywhere Response messages....Please tell me some
examples..
2.In SIP call flow when TCP come into picture and when
it'll be changed from UDP to TCP??explain me with some
examples...
Govindraj: By default SIP uses UDP as trnsport layer
protocol. Still it depends upon the number of octets per
message. If the message size is less than or equal to 1000
octets then SIP uses UDP only. If the message size just
above the 1000 octets then sip statck itself try to adjust
it in 1000 octets by compressing technique ( ex: via = v,
call-id = c). Still if the size is beyond 1000 octets then
SIP has to use TCP.
Thanks & Regards
Vijay
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Why delete messages? Unlimited storage is just a click
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Message: 3
Date: Mon, 3 Sep 2007 09:35:09 +0300
From: "erol turac" <erolturacgmail.com>
Subject: Re: [SIPForum-discussion] Does anybody know the
reason why
the calling get connected while no ringing in a
To: "=?GB2312?B?tPMgxODIyw==?="
<qinglan_zenghotmail.com>
Cc: discussionsipforum.org
Message-ID:
<3079c79a0709022335safc9677gaaa6d93bbbe6f3b7mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
The mandatory messages to establish a session are invite,
200 OK and ACK.
So, you will not hear any ringback tone unless local EP
takes any
provisional response, like 100 Trying-180 Ringing (can be
generated by any
hop) and 183 Session Progress(end to end).
Rgrds,
On 9/2/07, ? ?? <qinglan_zenghotmail.com> wrote:
>
> All,
>
> Does anybody know the reason why the calling get
connected while no
> ringing in advance?
>
>
>
> Thanks
>
> With Best Regards
>
> Daniel Zeng
>
> ------------------------------
> From: *<harini.dhanasekaranwipro.com>*
> To: *<vijaycecyahoo.co.in>, <discussionsipforum.org>*
> Subject: *Re: [SIPForum-discussion] Response messages
& Protocol*
> Date: *Sun, 2 Sep 2007 10:13:49 +0530*
>
> Hi Vijay,
>
> Here is the ans for ur first question: diff between
486 and 600
> response...
>
> Suppose if user A is trying to call user B, then 486
response message is
> sent by user B in the following situation:
> If user B's end system was contacted successfully,
but the user B is
> currently not willing or busy or unable to take
additional calls at this
> end system.
>
> 600 response message is sent by user B during the
following situation:
> The user B could be available elsewhere, such as
through a voice mail
> service (if user B has registered for it). 600 (Busy
Everywhere) response
> message is sent if the client knows that no other end
system(such as voice
> mail service or call forward to another end system
service) will be able to
> accept this call.
>
> otherwise 486 response message is sent...
>
> in both the cases, user A would hear busy tone on
his/her end system...
>
> for the call flows refer:
> http
://www.tech-invite.com/Ti-sip-service-8.html
>
> Thank you,
> Regards,
> Harini Dhanasekaran.
>
> ------------------------------
> *From
discussion-bouncessipforum.org on behalf of Vijay T
> *Sent Sat
9/1/2007 11:37 PM
> *To
discussionsipforum.org
> *Subject
[SIPForum-discussion] Response messages & Protocol
>
> Dear ALL
> 1.What is the difference between 486-Busy Here and
600-Busy
> Everywhere Response messages....Please tell me some
examples..
>
> 2.In SIP call flow when TCP come into picture and
when it'll be
> changed from UDP to TCP??explain me with some
examples...
>
> Thanks & Regards
> Vijay
>
>
> ------------------------------
> Why delete messages? Unlimited storage is just a click
away.<h
ttp://in.rd.yahoo.com/tagline_mail_1/*http://help.yahoo.com/
l/in/yahoo/mail/yahoomail/tools/tools-08.html/>
>
> >_______________________________________________
> >This is the SIP Forum discussion mailing list
> >TO UNSUBSCRIBE, or edit your delivery options,
please visit
> http:
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> >Post to the list at discussionsipforum.org
>
>
> ------------------------------
> ??????????????? MSN Hotmail <http://g
.msn.com/8HMBCNCN/2755??PS=47575>
> _______________________________________________
> This is the SIP Forum discussion mailing list
> TO UNSUBSCRIBE, or edit your delivery options, please
visit
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>
>
--
Erol Tura?
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Message: 4
Date: Mon, 03 Sep 2007 07:11:41 +0000
From: =?gb2312?B?tPMgxODIyw==?= <qinglan_zenghotmail.com>
Subject: Re: [SIPForum-discussion] Does anybody know the
reason why
the calling get connected while no ringing in a
To: erolturacgmail.com
Cc: discussionsipforum.org
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End of discussion Digest, Vol 26, Issue 3
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