Some large telcos with wireless and wireline operations in the US maintain 2 separate backbones: one that I call "wired", that corresponds to traditional wired access where commerce servers are usually located; and one that I call a "wireless" backbone, where GSM/CDMA wireless devices are used to aggregate access-layer traffic. Both backbones consist of national fiber-optic, BGP-based networks. Surprisingly, some large telcos have a presence of both wireline and wireless backbones in the same colos, but the 2 backbone networks are interconnected, not in that colo, but at a single geographic location (with perhaps a single hot standby interconnection site), located, for example in northern Virginia. So, the worst case is that if the servers and GSM/CDMA devices are located in Southern California, even though the telco has a wireline and wireless presence in the local LA colo, GSM/CDMA access-layer traffic must traverse the continental US to northern Virginia and back to get to the server. -----Original Message----- From: Seth Mattinen [mailto:sethm@rollernet.us] Sent: Monday, September 27, 2010 1:14 PM To: nanog@nanog.org Subject: Re: Mobile Operator Connectivity On 9/25/2010 13:37, Leo Woltz wrote:
I am looking for some guidance from the list. We will soon be deploying wireless payment devices (CDMA/GSM). We are looking at options on where to locate the servers that will run the backend payment gateways; we would like the least amount of latency between the servers and the wireless networks as possible. The wireless networks we will be deploying the devices on are:
Sprint PCS
For Sprint you can get a circuit to AS1239 and just take customer routes. Their PCS network is AS10507, but as far as I know the closest you can get to it is 1239. ~Seth