In article <3vf08p$6oj@s1.GANet.NET>, el0@s1.GANet.NET (Eric Long) wrote: > My question is: how do I hook the Sound Blaster output to play >over the phone line??! a ______________ / \ n v diode-bridge / \__________________________________ |\ / ____|____ | | | v n | Relais | === elco 470 uF z Resistor 330 Ohms | \ / ---------- | | |___|___________|_________|_______________ __| b _____ | | _____||____ from soundblaster | \ 3 | c || b out _| nc\ 3 | c | 3 | c___________ a out ______|__| small transformer 10:1 a & b out goes to your phone/modem, a&b to the wall socket. (screws?). Relais controls nc-switch over the transformer, when phone picked up. AnotherObhack: I few months ago, I bought a Sharp ZQ-6100M electronic organizer. It has a 8x40 char LCD screen plus 64 Kb RAM. There is a terminal function that does ANSI/vt100, which I can use to fetch my e-mail when I'm hitch-hiking (with my modem , a 12V rechargable battery, and aan coustic coupler. :-) The TTL-RS232 interface sharp is offering wouldn't work with my macintosh, (levels didn't match - +3/-3 V). It was also a bit too pricey, about $75 (!). Started measuring, discovered the pin-out, and built my own interface, using an inverter/buffer and the MAX232, altogether about $5. Full schematics of this cheaper "interface" are at my homepage, http://www.xs4all.nl/~mbast/org2modem.html. Now I'm looking for the protocol used by the "Computer link" software, so that I can write my own software for it. -- Mark-Jan mbast@xs4all.nl http://www.xs4all.nl/~mbast/