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operations, do not use too much of the buffer and reduce the throughput of the other channels to
unsatisfactory levels. In such cases, the interactive user who needs immediate responses would experience
unreasonable delays. The Response Time Priority numbers 0, 1, 2, 3 establish the relative
time each group of channels must wait for data. The lower the number the shorter the wait. Since this is a channel
group command, it does not control priority per channel but per group. For example,
C1R3 sets channel group 1 (channel 1 through 8) for a Response Time Priority 3. So, if you have
channels within a group doing both interactive and batch work, the group must be set to an R0 setting or the batch
operation may utilize too much of the group's buffer resources. An R3 number is the most
efficient for throughput (allows more data to be assembled before sending a block).
Stop Bits The Stop Bit commands set the number of stop bits used in
asynchronous characters. The default condition is one stop bit
SB1 SB1. An SB1 command sets one, an SB1.5 command sets 1.5,
SB1.5 and an SB2 command sets two stop bits.
SB2
Source Node The SN command specifies the node number of the local node. Number This number is
determined by you and can be any decimal number up to 255. It should be assigned when you are designing
SN your network and needs to be unique to any other node in your network. Remember
that the node number selected will be used by other nodes (using a DNxxx command) when accessing the
node. For example, if you assign 124 as the SN of a local node (SN124 command), accessing that node from
another node requires 124 in other nodes Destination Node number command (DN124).
Remote Source This command selects the Source Node Number for groups of Node Number four channels
each:
Group Select
Group Channel Default
A 1-4 01
SNGA..H B 5-8 01
C 9-12 01
D 13-16 01
E 17-20 01
F 21-24 01
G 25-28 01
H 29-32 01
The command is used when in point-to-point and multipoint (not networking) and when
you are downline loading parameters. This command is active only when the Select Downline Load
parameters command &SR has been selected. The format of this command is SNGynnn where y is the group
letter and nnn is the source node number desired (any decimal digit up to 255). When the
Voice/fax option is installed, the source node number range is 0 to 31.
Word Length The Word Length Select commands set the word length for asyn-
Select chronous communications. The selections available are 5, 6, 7,
and 8 bits which correspond to WL5 through WL8.
WL5-8
Load The factory default command resets the MultiMux parameters to
Factory their original factory settings. They are as follows:
Parameters
Channel Speed: 19200 bps
&F Word Length: 8 bits
Stop Bits: One
Parity: None
Flow Control: XON/XOFF
Enq/Ack Control: Off
Echo: Off
Pacing: Off
Pass EIA: Off
Pass Xon/Xoff: Off
Dest Node: 01
DSU Link: A