Re: [dispatch] VIPR - proposed charter version 2 - PSTN?

[Roni Even <[e-mail]>]

Hi,
I read the charter and the listed drafts. I have no problem with the first
two paragraph of the charter

"There are two globally deployed address spaces for communications that more
than a billion people use on a daily basis. They are phone numbers and DNS
rooted address such as web servers and email addresses. The inter-domain
signaling design of SIP is primarily designed for email style addresses yet
a large percentage of SIP deployments mostly use phone numbers for
identifying users. The goal of this working group is to enable inter-domains
communications over the internet, using protocol such as SIP, while still
allowing people to use phone numbers to identify the person they wish to
communicate with.

The VIPR WG will address this problem by developing a peer to peer based
approach to finding domains that claim to be responsible for a given phone
number and validation protocols to ensure a reasonable likelihood that a
given domain actually is responsible for the phone number."

I have a concern about using PSTN infrastructure for the reachability. My
understanding so far was that SIP is trying to provide a new way for end to
end communication that will replace the existing circuit switch
infrastructure. This proposal says that the way to achieve end to end
connectivity requires to have an end to end PSTN frastructure.

The third paragraph is talking about validation using PSTN calls. I think
that we can look at validation of number ownership but should say that
requiring PSTN calls to do it is not the recommended approach. This will
allow managing of PSTN numbers not in the scope of PSTN infrastructure. Even
the PSTN network is using external protocol like SS7 to route calls using
databases for achieving reachability so why not say we can use similar
infrastructure that will be IP based.

I can understand this as a temporary solution but not as a standard
developed by the IETF.


 Thanks

Roni Even