dhuber@aut.UUCP (Daniel Huber) (10/26/90)
Hi there I have to connect two (for now) lans in buildings which are located about 500m from each other. I want to connect them with at least 10Mb/s. I can see the other building without problems. Between the buildings a railway crosses the sight line (electrical influences ?). Is there a product available which solves my problem? (In Switzerland!) Do I have any problems with the PTT to expect when I use this product ? (The land between the buildings is public, but the Swiss PTT is @#!*&%) Costs? Thanks for your answer. Official product information welcome as well. Daniel -- Daniel Huber Tel. +41 31 52 96 64 Ascom Autelca Fax. +41 31 52 53 01 CH-3073 Guemligen email: huber@aut.uucp Switzerland uucp: uunet!mcsun!chx400!hslrswi!aut!dhuber
henry@zoo.toronto.edu (Henry Spencer) (10/28/90)
In article <1056@aut.UUCP> dhuber@aut.UUCP (Daniel Huber) writes: >Do I have any problems with the PTT to expect when I use this product ? >(The land between the buildings is public, but the Swiss PTT is @#!*&%) It is entirely possible that your PTT has a legal monopoly on communication and you cannot install such a device without their approval (or worse, that you can install only devices they have blessed). Actually, having public land in between makes things worse, not better, as there is often an exemption for communication entirely within your own property. Microwave and radio links will assuredly require government approval of some kind, as the radio spectrum (including microwaves) is a scarce resource, and using it without coordination can cause trouble for previously-approved users. Infrared is directional enough that it might be possible to install that kind of system without anyone noticing, and most regulatory authorities disclaim any interest in light anyway. -- The type syntax for C is essentially | Henry Spencer at U of Toronto Zoology unparsable. --Rob Pike | henry@zoo.toronto.edu utzoo!henry
bruce@ccavax.camb.com (10/29/90)
You certainly can run enet bridges over microwave, and over I/R links. Both are readily available commercially, but that is over here where, though we have perverse telephone companies, we can legally do all sorts of things to bypass them. I have no idea what is legal in your country.
poole@chx400.switch.ch (Simon Poole) (10/31/90)
In article <1056@aut.UUCP> dhuber@aut.UUCP (Daniel Huber) writes: ... > >Do I have any problems with the PTT to expect when I use this product ? >(The land between the buildings is public, but the Swiss PTT is @#!*&%) Daniel, you must be joking, this is 100% PTT monopoly. -- ------------------------------------------------------------------------ Simon Poole poole@verw.switch.ch / poole@chx400.switch.ch / mcsun!chx400!poole ------------------------------------------------------------------------
dean@pico.OZ (Dean Economou) (11/07/90)
Here in Australia, and I believe in the U.S. too, it is permissable to use point-to-point microwave systems. For example, one large bank in Sydney connects its down-town site to a back-up site 10kms away using a 34 Mbit/s microwave system. Companies like NEC make to systems, and I see no reason why you couldn't connect two remote LAN bridges using this technique. Of course the systems aren't cheap. Dean.