Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ukma!rutgers!aramis.rutgers.edu!paul.rutgers.edu!masticol From: masticol@paul.rutgers.edu (Steve Masticola) Newsgroups: comp.dcom.modems Subject: Practical Peripherals S9 register Keywords: DCD response time ?bug? Message-ID: Date: 23 Apr 89 04:14:49 GMT Organization: Rutgers Univ., New Brunswick, N.J. Lines: 16 Does anyone know whether there's a bug in setting the S9 register in the Practical Peripherals PM2400SA modem? It's supposed to set the minimum time the modem has to detect the answering carrier, but changing the setting seems to have no effect. This is important to me because the system I work with answers by emitting a 1200-baud tone for 5 seconds, then switching to 2400.* The modem picks up the 1200-baud tone immediately and drops the speed. Any help is appreciated! Please reply by mail if you have any suggestions or knowledge of this problem. - Steve (masticol@paul.rutgers.edu) * BTW, is this speed switching in the CCITT v2.2 standard?