Subject: Re: CPL Features

From: Tom Gray <[email-masked]>
Date: Thu, 13 May 1999 08:53:57 -0700 (PDT)

--- Jonathan Rosenberg <[email-masked]> wrote:
> Tom Gray wrote:
> > 
> > Has any thought gone into asking the calling party
> about his
> > preferences about the disposition of a call by
> CPL. For example the
> > calling party could be asked if he wishes to camp
> on to the called
> > party and wait for him to become free or to
> forward to voice mail.
> > These options could be set up as both acceptable
> by the terminating
> > party.
> 
> Yes. See:
> 
>
http://www.ietf.org/internet-drafts/draft-ietf-mmusic-sip-caller-00.txt
> 
> This draft proposes defining caller preferences to
> be included in SIP.
> The draft does not go so far as defining how the CPL
> might be structured
> to explicitly take these into account, though.
> 

The draft is very interesting in its possibilities. In my
interpretation of it, the caller is able state his preferences for call
handling at the called party end of the call. Are there mechanisms for
this to be extended so that the user can  indicate his preferences on a
call by call basis taking into account iformation from the called
party. For example, if the called party could indicate that he could
accept the call after a brief delay the caller may wish to camp on (ie
queue) rather than go to voice mail or he may indicate a preference for
an automatic call back when free. This would best be done during call
set up rather than requiring a user to identify all possibiities before
the call is attempted.

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