Re: PSTN Gateway service providers

[Jiri Kuthan <>]

I'm not sure I understand the trust model. You would like not to have 
the burden of gateway charging/accounting/invoicing on you, would not
you? Why would you like then to be in the authentication path between
students and oeprators? I guess it would also put some liability on
you, which if you like burden outsourcing, could go away otherwise.

Technically, complete outsourcing is for example implementable with
dual SIP accounts in phones -- one for university, one for operator. 
If you would like to go the other way and guarantee identity of 
individual users to operators, you can authenticate them localy
using digest and authentication your domain to operator's domain
using TLS.

-jiri

At 02:30 AM 8/16/2003, Tyler Miller Johnson wrote:
>We operate H.323 gatekeeper service now and are bringing up SIP. I am 
>curious what services will be available. There seem to be two options. One 
>is simply outsourcing the PRI (not SS7) gateways and PRI themselves, and 
>billing back the University in bulk. The other, which I think is more 
>interesting, is the idea that a service provider could establish an account 
>with individual users on our campus, and bill back DID, local and long 
>distance services directly to them, so the University doesn't have to fool 
>around with that. The trick is authentication. We would still want folks 
>authenticated to the local proxy (or gatekeeper). There would have to be a 
>trust relationship between the university proxy and the service provider's 
>network, so that the service provider would trust that signalling coming 
>from the university is correct. Perhaps the university would even charge the 
>service provider for access to its user base?
>
>Milijasevic, Ray wrote:
>>Are you looking for SIP origination - PSTN termination only? Are you
>>looking for PRI or SS7 trunks to interconnect with? What kind of a
>>termination device do you have on your end? Do you operate your own
>>proxy. I work for Level (3) and we will be offering IP (SIP) origination
>>service, this year.
>>- ray
>>-----Original Message-----
>>From: Tyler Miller Johnson 
>>[mailto:]
>> Sent: Friday, August 15, 2003 2:16 PM
>>To: VoIP Working Group
>>Subject: PSTN Gateway service providers
>>Is anyone aware of an IP<>PSTN service provider for SIP or H.323. Right now 
>>I operate my own gateways and PRIs. I wonder if it might be cheaper to 
>>contract that service to a gateway provider.
>
>

--
Jiri Kuthan            http://iptel.org/~jiri/  

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