Re: [Ecrit] introduction section (<draft-schulzrinne-ecrit-requirements-01.txt>)

[Henning Schulzrinne <hgs at cs.columbia.edu>]

I agree that this can be shortened, but would like suggesting keeping 
text that allows the reader to identify how our overall sequence of 
steps work. This is far from obvious to most "bystanders" and we don't 
have another document to point to. Below, I trimmed stuff I think is 
unncessary details and did some re-ordering.

Tschofenig, Hannes wrote:
> hi all, 
>
> please find my comments below (#). 
>
> i think the introduction is too long and repeats requirements. 
>
>
> 1.  Introduction
>
>    Users of telephone-like services expect to be able to call for
>    emergency help, such as police, the fire department or an ambulance,
>    regardless of where they are, what (if any) service provider they are
>    using and what kind of device they are using.  Unfortunately, the
>    mechanisms for emergency calls that have evolved in the public
>    circuit-switched telephone network (PSTN) are not quite appropriate
>    for evolving IP-based voice, text and real-time multimedia
>    communications.  This document outlines the key requirements that end
>    systems and network elements such as SIP proxies need to satisfy in
>    order to provide emergency call services that offer at least the same
>    functionality as existing PSTN services, with the goal of making
>    emergency calling more robust, cheaper to implement and multimedia-
>    capable.

>    This document only focuses on end-to-end IP-based calls, i.e., where
>    the emergency call originates from an IP end system, (Internet
>    device), and terminates to an IP-capable PSAP, done entirely over an
>    IP network.
>
>
>
> # ------ i would shorten the following paragraphs below by just saying
> something like. 
> Section 2 defines terminology, Section 3 lists high-level requirements,
> etc... 
>
>  
>    This document identifies functional and security issues for
> #                                          ^^^^^^^^^^^^^^^^
> #  in fact this document does not specify security requirements. 
>
>    determining the correct emergency identifier, for identifying the
>    appropriate PSAP (emergency address) and for identifying the caller
>    and its current location.

[should be in section order]

>    Emergency calls need to identify the location from which the call is
>    initiated (Section 5).  The caller location needs to be identified
>    for two purposes, namely to route the call to the appropriate PSAP
>    and to display the caller location to the call taker to simplify
>    dispatching emergency assistance to the correct location.




>    Emergency calls need to be identified (Section 6).  Emergency
>    identifiers are used by the emergency caller to declare a call to be
>    an emergency call.  
>
>    Emergency calls need to be routed to the appropriate PSAP (ref.
>    Section 6).  

>    Emergency calls need to identify who placed the call (Section 7). 


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