Skip to Content.
Sympa Menu - Re: [] Using E.164 numbers and other comments

Subject: SIP in higher education

List archive

Re: [] Using E.164 numbers and other comments

Chronological Thread 
  • From: Ben Teitelbaum <>
  • To:
  • Subject: Re: [] Using E.164 numbers and other comments
  • Date: Sun, 03 Jul 2005 20:59:04 -0400


Thanks for your comments.

I am not a lawyer, but my perception is that when communications
looks, feels, and sounds like telephony, regulators are inclined to
regulated it as traditional telephony. If we are building a private
network to enable collaboration among researchers and educators (as we
are), using globally-significant E.164 addresses sends the wrong
message. Also, if we are interested in campus/enterprise-enabled
communications (as I am), it sends the wrong message.

Your point about fail-over is absolutely right. During the transition
from TDM voice to VoIP, there is a huge opportunity to use both to
achieve a high-level of availability---and for that, we would need to
use E.164.

-- ben

"Bauer, Steven J."

> I wasn't able to listen to the conference call so some of this might be
> repetition.
> I don't see where regulatory implications is a problem if a person where
> to use e.164 numbers or not. The first time someone trys to call 911on
> a system that doesn't get routed to the right place seems to be where
> the fcc sticks their hands into the mess. In addition, as moves
> forward and get larger it might not fly "under the radar" of the
> regulators anymore.
> The "Seamless Interoperability with PSTN" might be considered really
> minimum rather than a con. Say during a pure sip to sip call the
> person then has the ability to be doing video, and presence, etc. Also,
> some of the bonuses might not be seen until the end of the month bill
> arrives.
> In addition, by using e.164 numbers failover/fall back to pstn
> automatically, in case something dies. In addition to failover/fall
> back to pstn there is the other direction of the pstn failing and thus
> one would route everything via sip.
> How much training is the typical enduser going to need to use it? Will
> they use it? Current pstn setups are easy to do the minimum
> requirements of communication from person to person. Also, what works
> on the pstn works on the cell phone.
> As an alternative to using formal e.164 numbers, how about looking at
> what the people at are doing for campus and endpoint
> numbering when trying to use h.323.
> Steve Bauer
> South Dakota School of Mines and Technology

Ben Teitelbaum

Archive powered by MHonArc 2.6.16.

Top of Page