Path: utzoo!telecom-request Date: Thu, 6 Jun 1991 02:34:24 -0400 From: Jamie Mason Newsgroups: comp.dcom.telecom Subject: Re: Pet Peeve About Newer Modems (was Telephone Keypads) Message-ID: Organization: University of Toronto Computer Services Advisor 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 432, Message 1 of 7 Lines: 44 In article the Moderator Notes: > [Moderator's Note: Register S-6 in many modems sets the length of time > to wait off hook before dialing. In the USR, the command ATX6 > overrides the two second delay and dials immediatly. The ten attempt Oops. I looked *right past* that in my modem manual. You are right: S6 (default) "Number of seconds modem waits before dialing." However, the modem does not dial immediately after picking up the phone -- it waits for a dial tone. And even X does it: "If set to X2, X4 or X6, modem ignores this regiser and dials as soon as it detects a dial tone." I don't find this unreasonable. The two second delay is to stop the equiptment from dialing before the CO switch is ready. If there is a dial tone (even before two seconds), then the switch is ready --- that is what the dial tone means. This takes about 1sec on my exchange. Of course I could set S6 to a lower value than two, but why bother when my modem can detect dial tone? > limit is to prevent repeated harassment of people who get wronh number > calls intended for modems. Telco's repeat dialing feature won't change > this; the modem does not care if it dials 7-D or *66. After ten tries, > it will stop dialing. PAT] *66 and *69 don't just call the appropriate number here. The call the number, then if it is busy, they 'camp on' in. That is to say, they switch calls *me* back to let me know that the number is free. When I pick up the phone, it calls the number automatically. So it does not have to try ten times -- just once. Then the network tries all by itself. That's why "this is obsolete". Jamie [Moderator's Note: Sure, and when the network connects, it will ring you back, and your modem will respomd in *answer mode* to the ringing phone. Or do you manually intercept it at that point and gie ATD to the modem to force it to go on line? PAT]