Path: utzoo!telecom-request Date: Thu, 6 Jun 91 12:47:28 CDT From: "Cliff H. Wallach" Newsgroups: comp.dcom.telecom Subject: Re: Pet Peeve About Newer Modems (was Telephone Keypads) Message-ID: Organization: Motorola Inc. - Cellular Infrastructure Div., Arlington Hgts, IL 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 3 of 7 Lines: 31 In article is written: -X-Telecom-Digest: Volume 11, Issue 423, Message 13 of 13 > Since my switch will reliably take 36ms, I see no reason to not allow > me to dial at that speed. Anybody (Toby?) know why the newer modems > are handicapped/differently-abled in this manner? Some foreign administrations have laws about the minimum DTMF time. Modem chip vendors hardwire some limit so they can sell chips to multiple markets. US Robotics designs their own modem datapumps, so any DTMF time limit is governed by the supervisory software. We used the modems that we designed. > [Moderator's Note: And while Toby is answering that, here is another > question: how come US Robotics has a condition you can set which > allows for 'quick dialing', or dialing without waiting the obligitory > two seconds before starting? Hayes used to claim (maybe still do) > that telco tariffs require a two second pause before dialing. You > could not set that particular S-register less than 2. Telebit seems > to feel the same way ... but USR lets you go off hook and bang those > digits right out if you set the register for it. PAT] The fast dial mode checks for dial tone before dialing. I believe this is the only US telco requirement. USR has advertised fast dialing for seven years with any complaints. How many people will pick up a handset and start dialing without waiting two seconds? Cliff Wallach uunet!motcid!wallach