[Dundi] DUNDI for inter carrier exchange

Tue Jul 25 05:02:31 MST 2006

We like ENUM.  We support ENUM in our software.  It works great for VoIP
route discovery.

However, Simon has observed that inter-carrier route discovery coupled with
interconnect price discovery could be useful for facilitating inter-carrier
VoIP peering with settlement.  We can't figure out how to do this with ENUM,
so perhaps Simon's idea for DUNDi could be a solution.

Jim Dalton
VoIP Routing, Accounting, Security
1.404.526.6053
www.TransNexus.com

> -----Original Message-----
> From: Rehan AllahWala [mailto:rehan at supertec.com] 
> Sent: Tuesday, July 25, 2006 12:30 AM
> To: 'Distributed Universal Number Discovery'; 
> Jim.Dalton at transnexus.com
> Subject: RE: [Dundi] DUNDI for inter carrier exchange
> 
> Simon and Jim,
> 
> Do you both yet use ENUM for delivery of voice calls yet as carriers ?
> 
> (Pleae correct me if I am wrong) that DUNDI is more suitable 
> for asterisk boxes to create seemless same extensions in 
> different boxes so a corporate user can interface to each 
> other without a lot of  intelligence at user level.
> 
> What is your say ?
> 
> Have you tried using e164.org for enum dip for example ?
> 
> Rehan
> 
> 
> > Hi Simon,
> > 
> > Researching DUNDi opportunities is on our product roadmap for Q4 of 
> > this year.  We think your idea makes economic sense for CLECs 
> > (Competitive Local Exchange Carriers) in the US.  We would like to 
> > collaborate with you on your effort.  We will be able to contribute 
> > some hands-on effort starting in late September.
> > 
> > Until, then we look forward to discussion about what is needed for 
> > DUNDi to be useful for the carrier market.
> > 
> > Jim Dalton
> > VoIP Routing, Accounting, Security
> > 1.404.526.6053
> > www.TransNexus.com
> >  
> > 
> > > -----Original Message-----
> > > From: dundi-bounces at lists.digium.com 
> > > [mailto:dundi-bounces at lists.digium.com] On Behalf Of 
> Simon Woodhead
> > > Sent: Saturday, July 22, 2006 5:07 AM
> > > To: dundi at lists.digium.com
> > > Subject: [Dundi] DUNDI for inter carrier exchange
> > > 
> > > Hi folks,
> > > 
> > > I'm new to the list today so please forgive me if this is 
> the wrong 
> > > place to post this.
> > > 
> > > I've been looking at DUNDI for a while and have implemented it 
> > > internally. It is very impressive so thanks and praise to 
> all those 
> > > involved.
> > > 
> > > The next stage for us is to implement it externally but whilst 
> > > thinking about that something comes to mind. Is there 
> scope within 
> > > the specification to advertise rates, or has it already been 
> > > discussed?
> > > 
> > > Before you set about me, let me explain:
> > > 
> > > - Yes, there is the obvious 'live LCR' type scenario 
> where multiple 
> > > termination providers could advertise their rates and any 
> that are 
> > > interconnected could be sent the call. That has a place but isn't 
> > > the bigger application.
> > > 
> > > - Of much more interest is the inter-exchange of traffic between 
> > > carriers. I'm in the UK so the following may not be appropriate 
> > > elsewhere but every call in or out of a carriers network 
> results in 
> > > a payment to/from the peer. The sum of those makes up the 
> outgoing 
> > > call cost but, more relevantly, represents an income on 
> the incoming 
> > > call.
> > > Currently, a carrier is better off receiving the call 
> through PSTN 
> > > than advertising a VoIP route through DUNDI but if they could 
> > > publish a rate then their peers could choose the least 
> cost route. 
> > > Implicitly this would lead to lower costs for both 
> parties even if 
> > > the direct cost/revenues remained unchanged - carrier a 
> could route 
> > > to carrier c over VoIP, avoiding carrier b. Carrier b 
> receives the 
> > > call directly and gets the same income as he would have done from 
> > > carrier c without the costs of the traditional interconnect.
> > > 
> > > The second option is possible now between any two peers but I do 
> > > think if it was built into a protocol like DUNDI it could give it 
> > > significant traction and make the benefits of peering two-way. 
> > > Taking my company as an example, it only makes sense to advertise 
> > > routes to numbers on which we receive no ingress income. The vast 
> > > majority, even where they terminate to VoIP, would not 
> make sense as 
> > > we'd lose the income.
> > > Granted, that income subsidises an expensive interconnect and the 
> > > call would be coming over a much lower cost one, but 
> there remains a 
> > > real cost. Further, we offer numbers where the income 
> directly funds 
> > > another service such as overseas diverts which it would be 
> > > impossible to advertise. If we could advertise them with 
> a rate for 
> > > interconnected peers, other participants could send 
> traffic through 
> > > on inter-carrier terms and we'd have the same income on a 
> lower cost 
> > > base.
> > > 
> > > It strikes me that this would really give the system traction and 
> > > cause the kind of disruption to the traditional 
> marketplace that is 
> > > long overdue and ultimately benefiting the consumer.
> > > 
> > > Looking forward to your comments.
> > > 
> > > Kind regards,
> > > Simon
> > > 
> > > PS - We'd be happy to make UK toll-free available as well 
> as publish 
> > > our own voip terminating numbers if a local peer could contact me 
> > > off-list.
> > > 
> > > _______________________________________________
> > > Dundi mailing list
> > > Dundi at lists.digium.com
> > > http://lists.digium.com/mailman/listinfo/dundi
> > > 
> > > 
> > 
> > 
> > _______________________________________________
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> > Dundi at lists.digium.com
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> 
> 
> Super Technologies Inc., Pensacola, Florida 
> http://www.SuperTec.com - Technologies from tomorrow, Today!
> 
> MSN: Rehan at Rehan.com
> Skype: Rehan33
> 
> 
> 