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specified port and assigns them to channels in ascending numeric order, unless an alternate connection order has
been specified.
The ATTACH command is also used to specify the host serial port for individual Lower Data PCA channels:
ATTACH {–V} MUXL LINE=<chan>,CONNECT=<name>{;<rate>-<size><parity><stopbits>}
...where chan is the multiplexer channel number from 0-15, and name is the host name of the serial port to use
(e.g., ser0 or COM1). If the –V (verbose) option is included, a connection confirmation message will be output to
the port.
An optional serial port configuration string may be supplied after the host name. The required values are:
• rate is the baud rate in bits per second.
• size is the character size in bits including the parity bit, if designated.
• parity designates the parity to use: N (no), E (even), O (odd), M (mark), or S (space).
• stopbits is the number of stop bits (1, 1.5, or 2).
Host serial connections default to 9600 baud, 8-bit characters, no parity, and one stop bit.
Upper and Lower Data PCA configuration options are available for the device and for the individual units. The
command forms are:
SET MUX <device-option>
SET MUXL <device-option>
SET MUXLn <unit-option>
Device options that may be specified for the Upper Data PCA are:
Option Action
TERMINAL
Connect using Telnet or serial ports; default
DIAGNOSTIC
Connect using diagnostic test cables
LINEORDER=<c1>[;<c2 >...]
Set the channel connection order
DISCONNECT=<chan>
Disconnect the specified channel
SC=<n>
Set the interface card select codes; default is 40/41
DEBUG=<option>
Enable tracing
NODEBUG
Disable tracing; default
ENABLED
Enable the device; default
DISABLED
Disable the device
Enabling the DIAGNOSTIC mode simulates the installation of eight HP 30062-60003 diagnostic test (loopback)
cables between channels 0-1, 2-3, etc., as required by the multiplexer diagnostic. Each cable connects the
Transmitted Data, Data Terminal Ready, and Request to Send lines, respectively, of one channel to the Received
Data, Data Set Ready, and Carrier Detect lines of the other channel, and vice versa. In addition, all sessions are
disconnected, and the multiplexer is detached from the Telnet listening port. While in diagnostic mode, the
ATTACH MUX command is not allowed. Enabling TERMINAL mode allows the multiplexer to be attached to
accept incoming connections again.
The LINEORDER option specifies the order in which connections are assigned to multiplexer channels. The
arguments may be single channel numbers or ranges of channel numbers of the form m-n. Telnet connections to
the listening port will be assigned to multiplexer channels in the sequence specified. In the absence of a SET MUX
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