Cabletron Systems 1800 - Manual (Page 157)

Chapter 10
Configuring BSC Interactive
Introduction
The SmartSwitch 1800 supports ports configured for BSC (binary synchronous com-
munication) Interactive, which connects IBM 3270 hosts to remote CUs (control
units) (via HPAD-TPAD communication) over frame relay or X.25.
BSC Interactive support includes:
●
Full-duplex line control
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Point-to-point and multipoint operation on BSC Interactive ports
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Autocall from BSC Interactive TPAD port
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Each BSC Interactive HPAD supports up to 16 remote TPADs simultaneously
●
Each TPAD supports up to 32 CUs per multidrop line
Required Configuration
To run BSC Interactive in a SmartSwitch 1800, make sure the following are properly
configured:
●
Node parameters (Chapter 4). This is general configuration that must be done
no matter which protocols will be run in the node.
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Loaded protocols (Chapter 5): BSC Interactive, as well as frame relay or X.25
if BSC will be transported over one of those.
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Frame relay (Chapter 7) or X.25 (Chapter 8) port(s) that will connect to a
network or frame relay PVC.
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Logical X.25 (Chapter 8), if BSC will be encapsulated for transmission over
frame relay.
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BSC Interactive port(s) (page 10-2) that will connect to the user devices.
●
Subscriber IDs (page 10-8), which identifiy user devices to each other and the
SmartSwitch.