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Multiserver 5000
88
Table 9-3. Sync Channel Characteristics (continued)
Option
Protocol
Default
Description
Number of
ASCII Bisync
1
Sets the number of leading pad characters to be
Leading Pad
EBCDIC Bisync
1
transmitted at the start of the block. This is used
Characters*
H-P Sync
1
for a time delay (1-9).
RTS/CTS
3
Sync-Pad
1
Number of
ASCII Bisync
1
Sets the number of trailing pad characters to be
Trailing Pad
EBCDIC Bisync
1
transmitted at the end of the block. External device
Characters*
H-P Sync
1
will have time to recognize the end of a block.
RTS/CTS
3
Sync-Pad
1
Buffer
DLC
NONE
Used to regulate data transmission from a device
Control
ASCII Bisync
NONE
attached to the port. The default setting (NONE)
EBCDIC Bisync
NONE
removes all buffer control. When this option is
H-P Sync
NONE
configured to CTS, the Multiserver will delay the
RTS/CTS
NONE
CTS signal up to 250 milliseconds for buffer control.
Sync-Pad
NONE
MICOM DLC
NONE
MICOM Voice
NONE
Encoding
DLC
NRZ
Depending upon attached device, select NRZ or
NRZI.
Idle Fill
DLC
FLAG FILL
There are four Idle Fill options. Selection depends
upon attached equipment:
•
Mark Fill
sets an idle pattern of binary 1s between
DLC frames. Use this for IBM 3270 SDLC half-
duplex operation.
•
Fall Fill
sets the idle pattern of hexadecimal 7E
(flag) between DLC frames.
•
Auto Fill
and
A128 Fill
automatically adjust idle
between DLC frames to
mark
at the end of the
transmission, or
flag
when the transmission is not
finished. For IBM AS/400 5250 SDLC operation, set
to either
Auto Fill
for Modulo 8 or
A128 Fill
for
Modulo 128 frame sequencing.
Clock Flow
DLC
ENABLE
When Clock Flow Control is enabled, the local
Control
ASCII Bisync
ENABLE
Multiserver controls flow on the local port if the
EBCDIC Bisync
ENABLE
Channel Clocking Option has been set to
H-P Sync
ENABLE
RX-Internal. It does this by halting the channel’s
RTS/CTS
ENABLE
clock. If NONE is chosen, there is no local data flow
Sync-Pad
ENABLE
control. The data is discarded, and it is up to the
MICOM DLC
ENABLE
remote Multiserver to issue a retransmit request.
* Prompt only. No menu.