Path: utzoo!utgpu!watserv1!watmath!att!westmark!dave From: dave@westmark.WESTMARK.COM (Dave Levenson) Newsgroups: comp.dcom.modems Subject: Re: Telephone system problem with the call signals. Message-ID: <1512@westmark.WESTMARK.COM> Date: 18 Nov 90 16:54:45 GMT References: Organization: Westmark, Inc., Warren, NJ, USA Lines: 18 In article , mshiels@tmsoft.uucp (Michael A. Shiels) writes: > Does anyone know if any of the modem manufacturers are starting to add > support for identifying the 3 signals that most phone companies use before > recordings etc. For things like line problems, out of service, changed number > etc? The BEST SmartOne modems detect these tones (called SIT or Special Information Tones) and treat any combination of them as the same as fast-busy. They apparently don't distinguish between the several defined sets of frequency and duration which have slightly different meanings in the telephone network. -- Dave Levenson Internet: dave@westmark.com Westmark, Inc. UUCP: {uunet | rutgers | att}!westmark!dave Warren, NJ, USA AT&T Mail: !westmark!dave [The Man in the Mooney] Voice: 908 647 0900 Fax: 908 647 6857