[enum-wg] ENUM Adoption - Does a business case matter?

Hello,

We would be happy to create SIP connections to other VoIP operators. But it
totally depends on the interconnection costs (if there would be no fee to
call to SIP accounts on their server, they could call for free to SIP
accounts on our platform ofcourse).

That is why we are also looking for ENUM, but currently it is not useful for
us (probably it is in the future).

With kind regards,

Mark Scholten
Stream Service
SinnerG BV

PS.: don't reply with us in the to or cc field if you also send it to the
enum-wg (if so remove our email address please). Feel free to contact us
directly.

-----Original Message-----
From: enum-wg-admin at ripe.net [mailto:enum-wg-admin at ripe.net] On Behalf Of
Rui Ribeiro
Sent: dinsdag 7 juli 2009 19:47
To: Christoph Künkel
Cc: Torsten Schlabach; Otmar Lendl; enum-wg at ripe.net
Subject: Re: [enum-wg] ENUM Adoption - Does a business case matter?

Hi all,

Thanks for your unvaluable feedback!

>> Unless two two have a peering agreement by chance, the call will go
>> VoIP -> PSTN Gateway -> PSTN Gateway -> VoIP. How stupid is that?
> One simple answer: it works. Anything else currently does not work (at
least, from a practical point of view).

It is stupid, but needed... many operators (even VoIP) don't allow to
go outside their own "SIP Island". What could be the drive to "open"
their island to "overseas" conections?


> Surprisingly enough, MS seems to be pushing heavily towards
> reliable public VoIP (what they are calling "ocs federation" I
> believe).  They could benefit from ENUM.

The "ocs federation" will not support ENUM, i'm sure. OCS uses some
kind of SIP, but not really interoperable with "off the shelf, white
brand, SIP systems". In fact you have to have a gateway to SIP... from
my testing, a few months ago, it doesn't allow to make calls using
URI's outside the federation and the numbers are always routed through
the gateways (SIP, ISDN or others). It seems like a way to make
"archipelagos", than to provide a global public VoIP system.

Rui Ribeiro
racribeiro at gmail.com