On 11/20/2004 8:18 AM, Alex Bligh wrote:
> But I'm not sure you'd like it applied to the internet. Firstly, in > essence, PSTN uses static routes for interprovider routing (not quite true, > but nearly - if you add a new prefix everyone else has to build it into > their table on all switches). Secondly, IIRC porting works in the UK > something like - call delivered to switch of operator who owns the block, > marked as ported number, lookup in central porting database (one for all > operators), operator port prefix put on dialed number, call sent back out > all the way to interconnect, enters new operator network, goes to switch > managing ports, further signalling info added to make call go to the > correct local switch, call goes to correct local switch, dross removed, > call terminated. Sounds like DNS. We also get semi-annual drive-by proposals to stick the routing info into DNS, of course. -- Eric A. Hall http://www.ehsco.com/ Internet Core Protocols http://www.oreilly.com/catalog/coreprot/