Path: utzoo!telecom-request Date: 13 Jun 91 17:15:39 GMT From: Toby Nixon Newsgroups: comp.dcom.telecom Subject: Re: Busying Out a Phone With a Resistor? Message-ID: Organization: Hayes Microcomputer Products, Norcross, GA 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 452, Message 7 of 11 Lines: 37 In article , varney@ihlpf.att.com (Al L Varney) writes: > On the other hand, would a modem that had a switch that caused the > modem to refuse to drop new calls still conform to Part 68? The first > incoming call would "hang" the line, but you wouldn't have made it > "busy" by just going "off-hook". How picky is the FCC on this section? The FCC, so far, isn't being very picky about it. For example, most AT command set modems include the "ATH1" command, which can very easily be used as a "make busy" ccommand. But the FCC certifies modems that have it, because there are other legitimate uses for the command. I don't think they'll certify any new modems that use Pin 25 of an EIA-232-E interface for "make busy". >> Bellcore is working >> on a DTMF signal that can be sent on the line to tell the switch that >> the circuit is busied-out (like the "Do Not Disturb" function on many >> PBXes). > And what will this "feature" cost on a per-line basis??? I assume that will be tariffed separately by each LEC in each state. There are certainly INDIVIDUALS who would PAY for a Do Not Disturb feature, that either gave a busy signal or invoked their forward-on-busy number, so they wouldn't have to deal with the warbling tone if they take the phone off hook to engage in some activity without being disturbed. I'm surprised it hasn't already been offered. Toby Nixon, Principal Engineer | Voice +1-404-840-9200 Telex 151243420 Hayes Microcomputer Products Inc. | Fax +1-404-447-0178 CIS 70271,404 P.O. Box 105203 | UUCP uunet!hayes!tnixon AT&T !tnixon Atlanta, Georgia 30348 USA | Internet hayes!tnixon@uunet.uu.net