covert@castor.DEC (John Covert) (03/04/84)
Maybe what I wrote wasn't clear. I wasn't talking about the U.S. or Canada. mprvaxa!tbray writes: >Re: Acoustic coupling and the CCITT - WHAT?!? > >Whaddayamean you can only get direct-connects on a rental from the >phone company? I can buy an ok little 300 jack-compatible for >very little money, and a really nice 1200 Rixon or Hayes for >(sigh) quite a bit of money. > >Now, I don't TELL the phone company what I'm doing. Why ask for trouble? In the U.S. or Canada, this is true. And you can legitimately connect your modem, so there's no reason in most places not to tell the phone company what you're doing. However, in most of Europe, the PTT has an absolute monopoly on providing all aspects of telecommunications service. You won't find jack-compatible modems for sale anywhere in those countries which enforce the monopoly. In fact, jacks are quite rare, and where they do exist, they are country specific. (The RJ11 is unique to North America!) You could smuggle a modem past customs, but a 300 bps modem from North America won't talk to the 300 bps modems in common use; the frequencies used by the CCITT standard V.21 modems are not the same as the frequencies used for low speed modems in the U.S. and Canada. If you smuggle in a 1200 bps modem designed for North America it will work in originate mode only (CCITT Recommendation V.22 differs in the handshaking procedure) unless you are in Holland, the only country in Europe which permits the North American 1200 bps standard to be placed on the network. And if you are caught with a modem, you'll be required to disconnect it, and you can guarantee you'll be watched from then on. You may lose your telephone service if you persist. As to tbray's comments about the reliability of acoustic connections, they are not slower! -- Yes, they are less reliable. But they were quite heavily used here for years while direct connection to the telephone network was not permitted (or was difficult), and they helped the growth of the computer culture we all take for granted. In Europe, general purpose terminals and communicating personal computers in homes are extremely rare, primarily because of the lack of public access to modems. John Covert ...{decvax, allegra, ucbvax}!decwrl!rhea!castor!covert
rjk@mgweed.UUCP (Randy King) (03/05/84)
In my investigations on PSK noise, I called AT&T at the much publicized 800 number, and asked them the status of reporting equipment connections to the network. Specifically, I asked if the FCC registration number or the ringer equivalence was required to be given to the phone company. The answer was a flat "no." I also asked if this applied to residential data connections, or modems. Again, the answer was "no, you need not report the connection of such equipment to anyone." Stands to reason - if you hose up your end of the network with improperly connected equipment, you will suffer the degradation of service and/or pay premium costs for repair if you or a neighbor calls it in. Randy King AT&T/CP-MG ihnp4!mgweed!rjk
julian@deepthot.UUCP (Julian Davies) (03/05/84)
There is another reason why telephone lines are less used in Europe, or at any rate the UK, for data communications (terminal to host)... the local calls are metered and an hour on the terminal could be pricy. On the other hand, this pricing policy should presumably encourage users now to get personal computers of one kind or another, and batch all their communications with the rest of the world. Is this starting to happen noticeably in those parts of the US that have gone to Local Metered Service?