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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: Bell vs. Internet Providers (fwd)
>> no, they have simply identified someone whom they think has no >> alternative to just bleeding more. Ah, the perks of the monarchy. > >the story i heard was not about usage percentage by time, but rather >usage percentage by bandwidth. modems squeeze every possible transition >out of the 3KHz band, while voice calls have few tones and much silence. >this means a modem call takes more bandwidth out of the inter-CO trunks >and LD aggregates. the telco's don't use strict DS0a TDM internally. > >the only reason why usage percentage by time matters to a telco is to >differentiate between the economic impact of G3 FAX vs. V.32bis modems: >they both use all of the link's transitions but FAXes are usually short >lived and so there's nothing to worry about. > >i'm not happy about the trend toward detecting modem users and charging >more for them, but it's an inevitable technical/economic necessity and >that means the PUCs around the united states are all going to have to >let it happen. what's amazed me for the last few years is that it's >taken the telcos so long to realize what they need to do and do it. I observe a lot of users expecting to use ISDN connections as if they were a dedicated line. "ISDN is cheaper than Frame Relay". I have noted that some ISDN tariffs call out higher prices for "data" use of a B channel than analog use. It seems that the phone companies are trying to take advantage of new environments to increase income. On the other hand, it costs a bit more to install ISDN than more analog circuits. I also suspect that long holding times take up ISDN switch capacity. I wonder if telephone engineering is keeping up with the usage changes. Dave Nordlund Dir of Technical Svcs Databank, Inc 913/842-6699 1473 Hwy 40 [email protected] Lawrence, KS 66044 "Your Key to the Internet
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