[SIPForum-discussion] SIP Transaction Layer

[haluk yavuz]

You may want to know how to unsubscribe, but please ask it via another
discussion topic. I think your subscription problem is not related with the
transaction layer in SIP.

On Sat, May 10, 2008 at 6:16 AM, Constantin Lazar <constantin_2 at yahoo.com>
wrote:

> my question is: HOW CAN I UNSUSCRIBE FROM THIS FORUM EMAILS?
>
> ----- Original Message ----
> From: banu Priya K <banupriya at tataelxsi.co.in>
> To: gaurav katiyar <gaurav_katiyar at yahoo.com>
> Cc: discussion at sipforum.org
> Sent: Thursday, May 8, 2008 2:32:42 AM
> Subject: Re: [SIPForum-discussion] SIP Transaction Layer
>
> Ok as you say it realiable transport ensures delivery of messages to other
> end, then why should we start timer B?
>
> -----Original Message-----
> *From:* gaurav katiyar [mailto:gaurav_katiyar at yahoo.com]
> *Sent:* Thursday, May 08, 2008 11:23 AM
> *To:* banupriya at tataelxsi.co.in; discussion at sipforum.org
> *Subject:* Re: [SIPForum-discussion] SIP Transaction Layer
>
> Hi Banu,
>     In case of un-reliable transport, as you know that there are chances of
> dropping sip message on network. Because of that SIP ensures that if a UAC
> won't get response in a certain period of time it would retransmit the
> message. Because transport is not ensuring the packet delivery so SIP takes
> this responsibility and ensures deliver a message on other end. But in case
> of reliable transport, transport ensures delivery of sip message on other
> end and takes care of any data loss. So there is no need to start timer to
> re-transmit data as it is ensured by transport layer.
>
> is what i understand.
>
> Gaurav
>
>
> *banu Priya K <banupriya at tataelxsi.co.in>* wrote:
>
> Hi,
>
> In case of reliable transport, why timer A is not set to fire.. i.e
> retransmission timer,
> Only timer B is set.
>
> Regds,
> Banupriya K
>
>
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>
>   *Gaurav Katiyar* | *Lead - Engineering | GlobalLogic Inc.*
> *The Global Product Development Leader*
>
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