Re: [FWD] Introduction of new FWD "experimental" service - FWD Vanity Numbers
- Date: Fri, 8 Aug 2003 21:48:18 +0200
I like your picture, but you got it the wrong way around:
If I consider SIP as the railroad, the native scheme is sip: URIs,
the PSTN/ISDN is the street and the native scheme is E.164,
and the crossing is ENUM.
But if you use numbers in SIP, you are a streetcar or tram, so
you have to obey the traffic rules eg E.164.
I agree with you that FWD may ignore the NANP, but not
the global public telephone numbers (E.164)
Von: Daniel Berninger 
Gesendet: Fr 08.08.2003 17:44
Betreff: Re: [FWD] Introduction of new FWD "experimental" service - FWD Vanity Numbers
As one vote, FWD should completely ignore NANP. Worrying about NANP is like
forcing automobiles to travel only along railroads. FWD can address issues
that come up on a case by case basis consistent with a focus on the needs
and interests of end users. One does need special treatment at "railroad
crossings" (i.e. PSTN interconnects), but FWD represents a terrific
opportunity to introduce new thinking.
----- Original Message -----
From: "Stastny Richard" <Richard.Stastny@localhost
Sent: Friday, August 08, 2003 7:14 AM
Subject: Re: [FWD] Introduction of new FWD "experimental" service - FWD
Hi Jeff, hi Ed,
In principle I think the introduction of vanity numbers and nicknames
SIP addresses) is a good idea, but:
the mess in numbering you are creating together with sipphone.com is
NOT a good idea.
If you would set up a complete new numbering and dialing plan, ok,
but you should keep in mind always compatibility with E.164.
But what you and especially sipphone.com are doing is even worse:
sipphone is giving away numbers looking like NANP numbers:
1-747-xxx-xxxx, but the NPA 747 is unassigned.
They also map some "real" numbers in, eg 411 and 1-800-555-1212
All these numbers are at least consistent with the closed NANP (1-10D),
and you also can dial "locally" with 7 digits
So people may think they are using the NANP, but this is not true.
Also these numbers cannot be dialed from the PSTN.
Very funny are the cross connections to FWD (393) , iptel.org (477) and
Iaxtel (700), all using unassigned or reserved NPA.
In case of FWD and iptel.org this is breaking the closed NANP by
any number of digits (instead of 7). So this never can be mapped onto
If you are now creating vanity numbers behind 393, allowing 6 to 26!!!
this is very weird, considering also that a complete E.164 may have only
So even if by miracle FWD, sipphone or iptel.org may get finally these
NPAs assigned, it would not work.
BTW, it is also weird for global services to align numbers to the NANP,
you should align to international E.164.
This will be very confusing for users and also be unresolvable in the
if VoIP and PSTN should be linked.
You are missing a big chance to create a numbering plan compatible with
because by being able to set up a numbering plan from scatch you could
avoid the pitfalls and restrictions other numbering plan administrators
for historical reasons, but you have to obey some basic rules and
BTW, how could I dial any international E.164 number in FWD? '0', '00',
(Always keep in mind you have a global service)
I think one should first set up a consistent numbering and dialing plan
first and then create numbers.
I am currently writing a draft on Numbering on VoIP and will send you a
as soon as im finished (approx. one week). I also hope we may have a
this at the VON in Boston.