Re: SIP trunking providers

[Owen DeLong <owen () delong com>]

Why not set up a small Asterisk box in a local datacenter and only trunk out the non-local calls?

Owen

> On Jul 20, 2015, at 03:36 , Mike Hammett <nanog () ics-il net> wrote:
>
> I want the gateway in Chicago as well. 
>
> I am Chicago based. The end users are Chicago based. Therefore the origination would be coming from a Chicago area 
> gateway. Half of the calls (inbound would be guaranteed to be local as they'd be coming in through a local tandem 
> anyway. Most of the termination traffic would again be to local numbers, therefore would again have to be through 
> local tandems. 
>
>
>
>
> ----- 
> Mike Hammett 
> Intelligent Computing Solutions 
> http://www.ics-il.com 
>
> ----- Original Message -----
>
> From: "Nathan Anderson" <nathana () fsr com> 
> To: "Mike Hammett" <nanog () ics-il net> 
> Cc: nanog () nanog org 
> Sent: Monday, July 20, 2015 4:11:37 AM 
> Subject: RE: SIP trunking providers 
>
> Maybe I'm missing something here, but what does it matter if the RTP from your perspective ends in Chicago or not? If 
> it does end in Chicago, that only means they are proxying the audio before sending it on to the actual media gateway 
> for that call where it finally drops onto the PSTN. So all that happens is that the audio latency remains the same 
> (or worse, because of the additional, unnecessary proxy) AND that the actual media gateway remains hidden from you. 
> You won't be able to actually test and see the latency to the MG, and you will be under the (false) impression that 
> latency across all calls is equally "good" because you are only measuring RTT to a specific and common media proxy. 
> By sending the audio directly to an MG closer to the point of exit from IP-land, it is taking a more direct route to 
> the callee than you are seemingly asking for. 
>
> If you're not talking about adding a proxy to the equation, are you expecting to find a provider in Chicago that 
> immediately goes from IP to PSTN within Chicago, regardless of the actual destination of the call? Circuit-switched 
> TDM is not a no-latency connection. Physics is involved here. The farther apart the caller is from the callee, the 
> more latency there will be, regardless of the medium. All other things being equal (similar network path, etc.), I 
> doubt IP packet switching significantly increases the latency over and above TDM call trunking. But I'm not an 
> expert, and again, if I'm missing something here, I would love to be proven wrong. 
>
> -- 
> Nathan Anderson 
> First Step Internet, LLC 
> nathana () fsr com 
>
> ________________________________________ 
> From: NANOG [nanog-bounces () nanog org] On Behalf Of Mike Hammett [nanog () ics-il net] 
> Sent: Sunday, July 19, 2015 1:04 PM 
> Cc: nanog () nanog org 
> Subject: Re: SIP trunking providers 
>
> I too am looking for the Chicago area. Low volume. I'm looking for people whose SIP and RTP hit the end of the road 
> in Chicago. Not interested in someone whose SIP servers are in LA , but will redirect me to the nearest gateway... 
> without telling me where said gateway is. 
>
>
>
>
> ----- 
> Mike Hammett 
> Intelligent Computing Solutions 
> http://www.ics-il.com 
>
> ----- Original Message ----- 
>
> From: "Rafael Possamai" <rafael () gav ufsc br> 
> To: nanog () nanog org 
> Sent: Friday, June 19, 2015 4:40:48 PM 
> Subject: SIP trunking providers 
>
> Would anyone in the list be able to recommend a SIP trunk provider in the 
> Chicago area? Not a VoIP expert, so just looking for someone with previous 
> experience. 
>
>
> Thanks, 
> Rafael