Decision Data 3000 Series, Руководство пользователя

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8Session Access
This chapter describes how to access the host via SDLC and X.25 line connections, and
Token-Ring and Ethernet attachment. The host access procedure varies according to the
type of communication line. Included in this chapter, is the procedure for changing hosts.
If any errors occur during communication an error code display on the screen. This code
identifies the type of failure or status condition. For a description of the errors, refer to
Appendix A - Error Identification.
8.1SDLC Host Communication
SDLC host communication enables communication via switched and non-switched lines.
To establish SDLC line type host communication:
1. Power on all the devices connected to the remote Controller.
2. Insert the operating diskette in the Controller and turn on the Controller.
3. Have the host system operator bring the Control Unit on-line.
4. Determine if your communication line is switched or non-switched and proceed as
follows:
•
for a non-switched line follow the instructions in step-5.
•
For a switched line, follow the instructions in and follow the instructions for Manual
Dialing in the following sections
1. If the logon screen is displayed within approximately two minutes, then your
communication procedure is complete - no further action is necessary.
* If you were not able to logon, repeat the procedure starting with step 1.
* If an error message is displayed, refer to Appendix A - Error Messages.
Manual Dialing Procedure
Follow these steps to dial up the host site manually.
1. Set the mode switch on your modem to the "
TALK
" position.
2. Lift the handset from the telephone and dial up the host site number.
3. When the host site is ready, you will hear the answer tone.
4. Set the mode switch on your modem to the data position.
5. Hang up the handset.
6. The procedure is now complete. The logon screen will be displayed on your
workstation
NOTE: If the logon screen does not appear verify that your Controller is on-line.
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