Subject: SIP in higher education
- From: David Paul Zimmerman <>
- Subject: More on my ENUM todo
- Date: Tue, 29 Mar 2005 15:25:03 -0800
Hi, all. I've been reading all of the past mail and meeting archives, and am offically chasing my own tail now. I'm hoping that other SIP.edu participants might be able to shed some light.
From the Feb 3, 2005 SIP.edu archived discussion:
A question is posed about the testing of E.164 dialing - overall, people
are interested in such a thing but most call participants are currently
too busy or otherwise involved to devote a lot of time to it. Others are
unconvinced of the benefits in relation to the amount of configuration
work necessary to implement such a thing.
From Ben Teitelbaum's presentation at the Jun 16, 2004 workshop at UPenn:
o Internet2 acting both as private ENUM root (e164.internet2.edu) and as trial campus ENUM (enum.internet2.edu)
o Was working, currently down
Please bear with me in my newness to all of this, but it appears to me that ENUM support in the US is pretty fractured, due in no small part to the non-delegation of 1.e164.arpa. In response to my email from last week, I did get one answer from Duane who runs the e164.org ENUM registry, so that was appreciated, but only part of the answer I'm searching for. So I did better searches of the SIP.edu archives and in general, tried to make some sense of the state of things.
Regarding the note above about I2 running a private ENUM root and trial campus ENUM, I can't find anything real (i.e., NS or NAPTR RRs), only a CNAME and IP. Apparently it was working, but is down, and the UMich undergrad who was putting it together is now working at Cisco. So I don't know where that goes from here, or if I2 has chosen to pursue a different direction. In general, there appears to not be a lot of interest in e.164, from what I can tell. My reading of various SIP.edu archive postings seems that it is viewed with the deprecated importance of "legacy" 12-key phone integration, rather than something "interesting" like sip:.
Beyond that, I've found a number of private ENUM providers:
- E164.org (http://www.e164.org/)
- ENUM.org (http://www.enum.org/information/trial.cfm)
- Stealth VPF (http://www.thevpf.com/?action=enum)
- FreeWorld Dialup (http://www.pulver.com/fwd/)
and there are more, I'm sure, but there's no advice in the cookbook about any of this. Some of those ENUM providers have their own presence on the PSTN side (e.g. FWD has +87810 393), some are completely virtual (e.g. ENUM.org), and other mixes. Stealth lists Yale and MIT as members. It appears that E164.org also allows you to put your own number in verbatim, as I believe Stealth VPF does. At the end of the day, I'm not sure how to deal with putting ENUM support in place for +1-510-66x-xxxx (e.g. 126.96.36.199.188.8.131.52.1.5.1.???) in such a way that follows a SIP.edu roadmap (paved or not).
I'm getting dizzy :-) and see three choices at the moment:
- wait and see, keep in touch with SIP.edu progress on ENUM
- sign up with nearly-free (i.e., pay or donate) private ENUM provider (but which one for SIP.edu?)
- specifically pursue operation of e164.internet2.edu ENUM root for SIP.edu testing
Am I way off base?
- More on my ENUM todo, David Paul Zimmerman, 03/29/2005
Archive powered by MHonArc 2.6.16.