Re: Better than POTS telecommunications conference service.

[Jeremy George <>]

  I don't understand the focus on conferencing.  SIPconf is only one
element of the Cinema suite of products offered by Prof. Schulzrinne's
spinoff company, SIP Communications (www.sipcomm.com).  If a
significantly better codec than G.711 might implemented, it would be
much more powerfully used in common two-party sip-sip communication.

  In that case I'd be interested in looking at it in our SIP
implementation here.

- Jeremy

On 1 Jan 2002, Ben Teitelbaum wrote:

> Date: 01 Jan 2002 14:04:47 -0500
> From: Ben Teitelbaum 
> <>
> To: 
> 
> Cc: Walt Magnussen 
> <>,
>  
> ,
>      
> ,
>  Debra Duncan 
> <>,
>      Lance Parr 
> <>,
>  Mark Herro 
> <>,
>      
> 
> Subject: Re: Better than POTS telecommunications conference service.
>
> A few corrections and clarifications...
>
> The SIP conferencing server that Walt refers to is sipconf
> (http://www.cs.columbia.edu/~hgs/papers/iptel2001/19.pdf).
>
> > ...
> >     We have an opportunity to have a vendor add the GIPs codec to an
> >     existing SIP phone if we can show the need.
>
> Actually, PingTel has licensed and intends to implement GIPS iPCM-wb
> regardless of what we do.  Snom has likewise licensed its wideband
> codec from GIPS.  The key issue is whether GIPS is willing to license
> the codec to Columbia at reasonable terms for inclusion in sipconf.
> Henning is in discussion with key people at GIPS about this.  If these
> discussions are not fruitful, the key issue is whether we can persuade
> PingTel and other handset vendors to implement an openly available
> wideband codec like G.722.
>
> > We are proposing to
> >     install one conf bridge at Colombia and possibly one conf bridge
> >     at TAMU to be used for Internet2 Work Group audio conferences.
> >
>
> Not exactly.  What we are proposing is that UCAID install and operate
> one sipconf bridge for WG calls and internal UCAID use.  If this works
> out, we are hoping that campuses might spin up their own nodes for
> bridged calls initiated by their faculty, students, staff.
>
> >    If Columbia and TAMU were to fund the conf bridges how many
> >    institutions would be willing to purchase one or more of these
> >    SIP phones. We would not charge for UCAID use of the conf bridge
> >    service. The phones cost about $550 each.
> >
> >    Please email your intent so that we can get back to the vendor.
> >    This is not a commitment by either your University or
> >    UCAID/Columbia/TAMU at this time.  We are only trying to get and
> >    idea of interest.
>
> Right.  The purpose of this exercise is to gauge the potential market
> within Internet2 for SIP handsets capable of supporting a wideband
> codec.  A good metric might be the number of individuals on your
> campus who are heavy conference bridge users (where "heavy" might mean
> more than 1 hr/week).  If we can credibly claim that there is a
> potentially large market for such phones in Internet2, it will help
> certain handset vendors justify Internet2 membership and investment in
> "seeding" the marketplace.
>
> Thanks,
>
> -- ben
>
>

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