Visara LINCS Configuration - Manual (Page 67)

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Chapter 3. Line Options
707023-003
SDLC on SCC or HSC Line
Line Options/SCC1.0 LINCS C8.2 Central Control
Line Protocol: SDLC
Duplex: Half
Request to Send - RTS: Controlled (Multipoint)
NRZ/NRZI: NRZ
Transmit Clock: External
Secondary Group Poll Address (00=Disabled): 00
PF: 1-Menu 7-Back 8-Forw 9-Default 10-Done
Duplex
Options are: HALF, FULL Full Duplex is only available for the first connector on SCC boards.
Request to Send - RTS
• Controlled (Multipoint) - Used when RTS is switched.
• Permanent (Point-to-Point) - Used when RTS is left up constantly. This option should
not be selected if other nodes share the same multidrop line.
NRZ/NRZI
You should match this parameter to the modems and the host line gen. Specify one of the
following:
• NRZ (Non-Return to Zero)
• NRZI (Non-Return to Zero Inverted)
Secondary Group Poll Address
This item allows you to enable the Group Poll feature by entering any hexadecimal number
01 through FE. You should obtain this value from your organization’s systems programmer.
00 is the default value; it indicates that Group Poll is disabled. This feature requires front end
processor support.
Transmit Clock
This field determines whether the board or an external device (such as a modem) will supply
the transmit clock for this connector. For the HSC board, a DCE-HSC Communications cable
must be installed if the Transmit Clock is configured for anything besides External. The
DTE-HSC cable must be used if the Transmit Clock is set for External.
On the SCC board, SDLC or X.25 can run at full or half duplex at 256Kbps on one connector.
If both connectors are used, 64Kbps is the maximum supported speed. The HSC board has no
such restrictions.
NOTE: “EXTERNAL” is the only choice available for SCC boards.