I have used RedHat Linux 6 and 7 through Cyclades Serial Hubs for a number of years since 1994 using NetComm Modems beginning with their 9600bps modems through to 56K modems. I had about 1000 modems until I replaced them with Cisco 5200s and 5300s. Providing the temperature environment is maintained at room temperature they just work.
There are other parameters that you have to take into consideration like telephone line quality. Some lines are noisy than others, Telstra exchanges use different types of multiplexors, and Telstra uses various methods of delivering voice lines to different suburbs. All these affects reliability of your data line as far as uptime is concerned. Because of these you may have to implement different initialisation strings on the server and dialer modems. Bottom line is there are no major issues that I had to be worried about RedHat Linux, Cyclades, and Netcomm Modems. Disclaimers: I have no commercial interest in the Company that manufactures RedHat, Cyclades Serial Cards, and Netcomm Modems whatsoever. No warranty and guarantee is assumed with this info. > Hello, > > One of the customers wants to run Linux Enterprise > Server 3 with several modems attached to it. > > They purchased HP ProLiant DL380 server and > wish to use NetComm modems. > > The issue is that hey wantto have "unbreakable" > evnironment and that modems do not fail > under Linux. > > I have spoken to Netcomm and their official response was > that none of their modem products officially support Linux, > and no drivers and technical support were available for Linux. > > Red Hat offers support for the CDC/ACM driver, which is > classified as "Working". > > >From experience, if a modem is a full hardware based modem > and using serial interface for external modem, then it can be > worked with Linux. > > Only two NetComm modems are full hardware devices: > > AM5698 NetComm Roadster V.92 (serial interface) > AM4068 NetComm Wave V.92 (serial interface) > > The question is: is it worth playing with Linux support for > modems on what customer wants to call mission-critical > server? > > What is you experience? Do you run, or are you aware > of any critical environment where Linux servers are used > with directly-attached (or through a hub, Adaptec for example) > modem pool? > > I know that Linux can work for reasonable use, but the > services that customer have in mind are higly critical and > highly utilised round the clock... > > I welcome and thank you for any comments in advance. > -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
