Path: utzoo!telecom-request Date: Sun, 30 Jun 91 05:15:16 CDT From: "Patton M. Turner" Newsgroups: comp.dcom.telecom Subject: Re: Line-Powered 'In Use' Circuit Problem Message-ID: Organization: TELECOM Digest Sender: Telecom@eecs.nwu.edu Approved: Telecom@eecs.nwu.edu X-Submissions-To: telecom@eecs.nwu.edu X-Administrivia-To: telecom-request@eecs.nwu.edu X-Telecom-Digest: Volume 11, Issue 504, Message 7 of 12 Lines: 25 Rich Mintz writes: > 4) Does an alternative device exist that will simply "suck" all the > line voltage away from the other phone extensions in the house when > mine is in use, to prevent pickups from disturbing my modem's > activities? A Radio Shack Teleprotector (43-107, $7.95) installed upstream of the remainder of the phones in your home will acomplish this. Unless you want to buy one for each phone in your house, connect a modular tee to the network interface. Plug the entrance bridge into the teleprotector and plug the teleprotector into one of the ports on the tee. From the other port run a line back to your modem. When your modem goes off-hook the remaining phones are disconnected from the line. We have had one of these devices installed at a repeater site for a year now with no problems. If your home goesn't have a network interface the teleprotector can be spliced into the line. Just remember to attach your modem line on the CO side of the device. Pat Turner KB4GRZ pturner@eng.auburn.edu