Thank you Scott. You have given me exactly what I am looking for and have made it a lot clearer. For completeness I have found another URL that is immensly helpfull (http://home.tiscali.be/tim.vloeberghs/network/modem.html).
Duncan ""s vermill"" wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > Duncan wrote: > > > > Hi > > > > I am busy studying for the CCNP Remote Access exam and am > > really stuck > > on the modem signalling bits. I think that the key to my > > problem is that I > > don't understand the definitions of a DCE & DTE properly and > > how they relate > > to the EIA/TIA-232 cabling pinouts. (which for some unknown > > reason you must > > learn) I hate learning anything parrot fashion, I would rather > > understand > > it. I have looked through the archives and there are some > > pretty useful > > pointers but I am still not all the way there. > > > > Does any one have a comprehensive description that they can > > point me to, > > preferably with examples of set-ups and how it all relates to > > the OSI model. > > > > Thanks > > Duncan > > > > > > I forgot to address you question about how it all relates to the OSI model. > I've always thought of specs such as 232, 422, etc. as being entirely > physical-layer specs (max p-t-p voltage, impedance, connector body, etc). > However, given the interaction that takes place over the signals that we > just discussed, I suppose an argument could be made that there is some layer > 2 taking place. To a limited extent, I guess you could say that there is > some arbitration for the circuit taking place. I wonder if any of the > group's big brains will weigh in on that... Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=60287&t=60240 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
