Supported modems

Any external 100% Hayes-compatible modem should work provided that it is connected to a serial port that is capable of supporting modem control protocols. All SCO-supported serial devices can provide modem control. Some third-party multiport smart serial cards cannot be used as they do not support modem control.

SCO has successfully tested several Hayes-compatible internal and PCMCIA modems. Some older models of internal modem have compatibility problems which prevent them from working properly. For example, they may flood the system bus with spurious interrupts, or they may not support the quiet, no-echo, or auto-answer modes.

Support for modems is provided by atdialer configuration files. Additionally, your SCO OpenServer system provides several dialer programs; see ``Using dialers''. If you have a modem that is not Hayes-compatible or is not officially supported, you can create a custom dialer as described in ``atdialer and dialer programs''.

For information on specific modems, see Appendix E, ``Modems''. Also see ``Guidelines for non-supported modems''.