View allAll Photos Tagged Modem
Practical Peripherals 14.4 kilo bit/sec 8-bit ISA modem pulled from one of the photographer's computers as "too slow"; replaced by an external 33.6 modem. (Which was eventually replaced by a 56K modem...which was eventually replaced by a cable modem!) This modem had a unique problem in that it could give you a shock, even with power to the computer off, (and the computer unplugged!) if you were touching it when the phone line it was attached to rang - or if there was unusual voltage on your phone line (which happened to the photographer's line once...) The problem is the placement of the transformer and that the leads were not insulated. (see note on picture) (and that "ring voltage" is 50V!)
Photo taken by a Nikon D40x at ISO 400 with a Nikor 18-55 non-VR kit lens. (at 52) Cropped a bit at top.
The whole system under test. On top of the homebrew modem is an HP71B portable computer and HP82164 RS232 interface. The HP71B is running a program that makes it emulate a 5-bit Baudot terminal. This is connected to the RS232 port on the modem.
To the left of the modem is the Uniphone TDD that I wanted to communcate with. Behind that is a square white box. This is simply 2 telephone sockets in parallel with a 9V battery and resistor to provide some line current. The modem and TTD are plugged into this.
What can't be seen here are the various PSUs. The transformer box for the modem, a wall wart for the TDD and an HP adapter for the HP82164 interface (The HP71B runs off internal batteries).
Yes , it does all work!
The Viccom Modem, connected to my original Commodore 64. This modem is still working. I calling in on a modem connected to a PC, via my own telephone exchange. This modem is from 1986.
A gauche : le modem optique et la box de l'opérateur.
A droite : le boîtier TV, relié à la box par un câble ethernet (il pourrait également l'être par CPL).
Before XBox Live, before the PlayStation Network, and even before the 56K Modem on the Dreamcast, there was XBAND.
XBAND was an on-line gaming service for the Super Nintendo and Sega Genesis, where "On-Line" means "On-The-Phone-Line". XBAND matches were directly connected to another player's phone line. The service would perform matchmaking and had friend lists and e-mail. Only a handful of games were supported, mostly sports and fighting games.
The service eventually went under because, come on, seriously, who wants to play video games against someone across the country? Such a silly idea.