Subject: [Sipping] Re: [Sipforum-discussion] SIP Telephony Device Requirements,Conf iguration andData

From: "banibrata dutta" <[email-masked]>
Date: Thu, 06 Mar 2003 09:00:03 +0000

short answer is yes. longer answer is it depends on the SIP device
in question. SIP devices, s.a. the CISCO, Pingtel phones, have no.
of common, and some differentiating "features". Call park, call hold,
call trasfer are some of the business-line features you'd find in
these phones. These features, are nothing but the application of
core-SIP or some SIP-extentions, in form of an application, much
like the traditional PSTN features and services, both IN & non-IN.

--

From: rishi <[email-masked]>
To: banibrata dutta <[email-masked]>
CC: [email-masked], [email-masked]
Subject: Re: [Sipforum-discussion] SIP Telephony Device Requirements,Conf 
iguration andData
Date: Thu, 06 Mar 2003 01:21:03 +0530

Hi folks,
query - Can SIP handle simultaneous session as in ...can we transfer a media 
to
another sip client and talk to someone else at the same time using the same
device?
please help
Regards
Rishi

banibrata dutta wrote:

 > you are absolutely right. SIP, brings the intelligent
 > for call-control right upto the user-agent, i.e. the
 > device used for making a SIP call, but that is just 1
 > of the several possibilities.
 >
 > in the PSTN world we have the Access-network & the
 > Core-network. For the Access-network too we do have
 > protocols s.a. V5, ISDN, apart from the traditional
 > tip/ring protocol.
 >
 > a "residential gateway" is a network-entity that can
 > allow the dumb-black-phones (i.e. non-SIP + analog phone)
 > to connect to the SIP network... somewhat similar in
 > spirit to the NT-1/NT-2 in ISDN n/ws.
 >
 > then there are the signalling gateways which can do
 > interworking between SIP - SS7, SIP - H323, H323 - SS7 etc.
 > infact you need such a gateway everything you make a
 > call that crosses SIP-VoIP network boundary into the PSTN
 > network boundary, and vice-versa.
 >
 > -bdutta.
 >
 > From: rishi <[email-masked]>
 > CC: [email-masked], [email-masked]
 > Subject: Re: [Sipforum-discussion] SIP Telephony Device Requirements,Conf
 > iguration and Data
 > Date: Wed, 05 Mar 2003 03:48:46 +0530
 >
 > Hi folks,
 > Just got interested in SIP world,would like to know how SIP can be 
related
 > to SS7 as both being signalling protocols,but SIP sits even on the client
 > device where as SS7 is completely invisible to client,and what are the 
major
 > differences of SIP and SS7
 > can some one help me in this ??
 > regards
 > Rishi
 >
 > Henry Sinnreich wrote:
 >
 >  > Franz Edler writes:
 >  >
 >  > >"dual homed" SIP-UA with one "line" connected
 >  > > to the PSTN via V5 - SIP gateway and the other "lines" beeing
 >  > > free for all new services of the SIP world.
 >  >
 >  > Great minds think alike! :-) Some of us had actually the same
 >  > requirements. This may be a MAY...
 >  >
 >  > The authors are still collecting all comments and we plan to 
consolidate
 >  > them with our follow-up into one single reply, for consistency 
reasons.
 >  > Please stay tuned.
 >  >
 >  > Thanks, Henry
 >  >
 >  > I've stopped 2,514 spam messages. You can too!
 >  > Get your free, safe spam protection at
 >  > http://www.cloudmark.com/spamnetsig/
 >  >
 >  > > -----Original Message-----
 >  > > From: Edler Franz [mailto:[email-masked]]
 >  > > Sent: Friday, February 28, 2003 1:55 AM
 >  > > To: 'Eric Tremblay'; Henry Sinnreich; Jörgen Björkner;
 >  > > [email-masked]
 >  > > Cc: [email-masked]
 >  > > Subject: AW: [Sipforum-discussion] SIP Telephony Device
 >  > > Requirements, Conf iguration and Data
 >  > >
 >  > >
 >  > > Hi folks,
 >  > >
 >  > > just a comment on SIP-25:
 >  > >
 >  > > I am currently working on a PSTN - SIP migration concept
 >  > > avoiding to re-invent all fancy features of the PSTN and in
 >  > > particular to re-implement all legal/regulatory requirements
 >  > > (emergency call handling, legal intercept). The concept
 >  > > builds upon a "dual homed" SIP-UA with one "line" connected
 >  > > to the PSTN via V5 - SIP gateway and the other "lines" beeing
 >  > > free for all new services of the SIP world. Therefore the
 >  > > requirement of multiple identities on the SIP side and a
 >  > > static identitiy on the PSTN side is essential, but I agree,
 >  > > if you are focused on analog adapters only, this would mean
 >  > > an unnecessary burden. But I suggest to re-think the
 >  > > migration perspective.
 >  > >
 >  > > By the way, if anyone is interested in this "dual-homed" PSTN
 >  > > - SIP migration concept let me know. I am convienced that
 >  > > this means a good chance for a carrier to migrate towards SIP
 >  > > without heavy investments in re-inventing what is already existing.
 >  > >
 >  > > kind regards
 >  > > Franz
 >  > >
 >  > > ---------------------------------------------------------------
 >  > > Franz Edler
 >  > > Strategy & Business Development
 >  > >
 >  > > UTA Telekom AG
 >  > > Donau-City-Strasse 11
 >  > > A-1220 Wien
 >  > > T: + 43/1/9009-3310
 >  > > F: + 43/1/9009-93310
 >  > > M: + 43/699/1388 3310
 >  > > mailto:[email-masked]
 >  > > http://www.uta.at
 >  > > --------------------------------------------------------------
 >  > >
 >  > > > -----Ursprüngliche Nachricht-----
 >  > > > Von:        Eric Tremblay [SMTP:[email-masked]]
 >  > > > Gesendet am:        Mittwoch, 26. Februar 2003 17:41
 >  > > > An: Henry Sinnreich; Jörgen Björkner;
 >  > > [email-masked]
 >  > > > Cc: [email-masked]
 >  > > > Betreff:    RE: [Sipforum-discussion] SIP Telephony Device
 >  > > Requirements,
 >  > > > Configuration and Data
 >  > > >
 >  > > > Hi Henry,
 >  > > >
 >  > > > Here is a somewhat lengthy email with a few comments about the SIP
 >  > > > Telephony Device Requirements draft:
 >  > > >
 >  > > >
 >  > > >   SIP-25, Dynamic login/logout for user mobility: SIP devices MUST
 >  > > >   support user mobility.  SIP clients MUST store a static
 >  > > profile in
 >  > > >   non-volatile memory so that this information is available
 >  > > during the
 >  > > >   power up sequence.  SIP clients MUST allow a user to walk up to 
a
 >  > > >   client, login, and be able to send and receive calls with
 >  > > his profile
 >  > > >   information.
 >  > > >   For emergency numbers (e.g. 911) the client MUST send the
 >  > > credentials
 >  > > >   (username/password) of the static profile.
 >  > > >
 >  > > > [EricT]
 >  > > > We are developing analog adapters and don't remember
 >  > > receiving such a
 >  > > > request. I suggest either changing the MUST to SHOULD or
 >  > > adding some text
 >  > > > to specify that it is a MUST for devices with the proper
 >  > > interface to do
 >  > > > it and a SHOULD for devices with a limited interface. I
 >  > > know we could
 >  > > > possibly configure this through a web interface, but the
 >  > > point is that
 >  > > > there are a lot of vendore that currently just want to
 >  > > replace the wire,
 >  > > > not the phone and its interface...
 >  > > >
 >  > > >
 >  > > >
 >  > > >
 >  > >
 >
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