Our esteemed editor wrote in V25 I64,
This is a very "interesting" industry, where rules, and companies who try to play by them, are often in flux. I was wondering about those numbers, so I looked them up. Prairie Stream is an Unbundled Network Element Platform CLEC, with no switch of its own. So it uses SW Bell numbers as well as the rest of the SW Bell network. UNE-P is basically a form of resale, though the financials are different from what is formally called "resale".
A CLEC can have its own prefix codes. It normally does not get ILEC numbers for its own customers, except by porting them over (as Prairie Stream does). It can however usually get fresh ILEC numbers for new UNE-P installs. If it had its own switch, though, it would need its own number blocks, in order to assign fresh numbers to new subscribers who weren't porting numbers over. That's what the 620-714 prefix is. However, it's not Prairie Stream's. They don't have a switch.
620-714 belongs to "KMC Telecom III". It is an Independence prefix served by a "switch" in Wichita. I am not sure but I think the "switch" is a Cisco AS5800 gateway/RAS (modem pool) which, with a Signaling System 7 gateway and some software, passes for a decent little phone switch. So TerraWorld's dialups are probably on that system.It gets more interesting in figuring out who owns what. "KMC Telecom" was a fairly large CLEC operation, structured as a group of numbered subsidiaries. It owned tons of switches and metro fiber optics around the country. It was not, however, a financial success. So last year it sold off most of its assets. Some, mostly in the southeast, went to Telcove, the company set up to acquire the assets of Adelphia Business Solutions f/k/a Hyperion. Others, mostly in the midwest, went to CenturyTel, the Louisiana rural ILEC chain that owns a few CLEC assets in Bell areas. "KMC Telecom III LLC" went to CenturyTel. The deal included the switches, the fiber, and even the use of the name "KMC Telecom III LLC".
If, as it appears, TerraWorld's Independence phone numbers are answered by modems in Wichita (the sane answer, from an engineering perspective), then CenturyTel (in its KMC III guise) is now in the curious position of providing a "Virtual NXX" service. This goes against their grain rather flagrantly. CenturyTel vigorously opposes any kind of "VNXX" or even foreign exchange services used by ISPs in their ILEC territories. They even oppose (this is before the FCC now) allowing "local" calls to radio pagers or cell phones whose switching systems are not in the Centurytel-defined local calling areas. For TerraWorld's modems to meet CenturyTel's standards, they'd have to backhaul the phone calls to a modem bank in Independence. That would be rather costly. Or they'd have to install a Media Gateway (essentially, a switch node) in Independence, so the calls don't go through Wichita.
Fred Goldstein k1io fgoldstein "at" ionary.com ionary Consulting