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HP OpenVMS Systemsask the wizard |
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The Question is: Is it possible to obtain remote console access on a VAX 3100 Model 80? With the system halted, I have tried several modems, and can connect to the modem but no response from the VAX. This works on 3100 Model 40'. Also works with VAXstation's flipping th e S3 switch for alternate console mode. We tried flipping what looks like an S3 switch on the back of the model 80, and it switched console output from port 0 to 3 (I think), but still no response when connecting a modem. Is there something different be tween the OPA0 MMJ on a Model 40 and a Model 80? The Answer is : Please be VERY careful when specifying the product names. There is no such system as the "VAX 3100 model 80", though there is a MicroVAX 3100 model 80. There are potentially two very different systems for the "3100 model 40", the MicroVAX 3100 model 40, and the VAXstation 3100 model 40. As stated, these latter two systems are very different systems. Thanks! If you have the serial console enabled, then local and remote access operate the same -- barring any differences in the modem signals available and any other differences such as the serial line speeds and such. The OpenVMS Wizard would strongly encourage testing first with a local serial terminal, before working with a modem. Access to a serial line testing device -- often known as a breakout box -- is also invaluable. (The breakout box allows you to directly see what is happening with the serial line, and particularly with the serial line signaling.) Please realize that MMJ does not permit nor support the modem control signals. This can lead to a serious security risk when a modem is used, as the OpenVMS process management normally expected when the modem call drops or when the user logs out is not available. The OpenVMS Wizard would not expect particularly much information on an alternate console with the MicroVAX 3100 series, as -- unlike the various VAXstation series systems -- the MicroVAX systems do not particularly need an alternate console. Also please see the extensive previous discussions of configuring and using modems on OpenVMS systems here in Ask The Wizard.
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