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Modem Configuration Requirements
If modems are used, the modem at the PC and the modem at the 3708 must be
configured as follows:
• Modems detect a change in Data Terminal Ready (DTR) signal and go on hook
when DTR drops.
• Data Set Ready (DSR) is raised only when a connection is established (not
applicable for internal modems).
• Carrier Detect shows whether or not Carrier is on.
• Modems use the Attention Command Set and send the modem responses in
words (verbose mode) and not in number codes (terse mode).
• PC modem does not answer incoming calls.
• The 3708 modem does answer incoming calls.
• Modems do not echo characters.
• Modems do not take over flow control (that is, the modem does not strip out
XONjXOFF characters from the IBM PC or the IBM 3708).
Technical Assistance
See your IBM representative for assistance with problems related to the central site
configuration aid.
Ordering Information
The Pluggable Cartridge with Central Site Configuration can be ordered with an
IBM 3708 Network Conversion Unit. Spare Pluggable Cartridges with Central Site
Configuration can be ordered by part number. A set of S.2S-inch, double-sided,
double-density diskettes containing the central site configuration aid is included with
each Pluggable Cartridge with Central Site Configuration feature.
Chapter 8. Planning for Central Site Configuration
8-5
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