User's Manual

SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
eNfusion® HSD-440 Mark 2 Terminal
23-15-30 F-6
3 JUN 10
D. Understanding Protocol File Transfer to CMU via Williamsburg
Data is transferred
to the CMU using Williamsburg protocol. Williamsburg messages use
the SAL of the equipment they are talking to as the label. In this case, the label is 304 as
the sub-system identifier label sent from the HSD-440 to the CMU is 304. For more
information, refer to "Understanding Word Format" on page F-7.
NOTE: Universal brand CMUs broadcast a different SAL in Label 172, but expect
transmission on a SAL of 304. This is achieved through the use of the CMU-SDU
HARD CODED SAL ORT parameter.
3. Understanding BOP Options
The HSD-440 Mark 2 Terminal uses the following BOP options for the CMU interface. The ORT
specifies the values for these options. If no information is available, then the options default to
the values shown in Table F-5.
Table F-5 BOP Option Defaults
Option Value Notes
O1 Half Half or Full Duplex Operation
O2 ORT value High or Low Speed Bus
Low speed is default
O3 No Automatic CTS when ready
O4 No Accept Automatic CTS
O5 Yes (high-speed
da
ta terminal)
System Priority to Resolve RTS Conflict
O6 -- Spare
O7 -- Spare
O8 Yes Use of SOLO word
(TEST/LOOP)
O9 -- Spare
O10 Yes Destination code in RTS/CTS /NCTS/BUSY Used
O11 Yes Bit-Protocol verification
O12 No Use subsystem SAL from ALO word