Introduction

This booklet provides a summary of the commands available to users of the Cisco communication server. These commands allow users to make connections, set local terminal parameters, and display the current connection settings. Commands for configuring and monitoring the lines, interfaces, and transmission protocols supported by the communication server are described in the Communication Server Configuration and Reference publication.

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Note This booklet describes only connection-related commands available at the user-level prompt.

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Conventions

The command descriptions use these conventions:

• Commands and keywords are in boldface.

• Variables for which you supply values are in italics.

• Elements in square brackets ([ ]) are optional.

• Alternative keywords are grouped in braces ({ }) and are separated by a vertical bar (|).

The examples use these conventions:

• Terminal sessions are printed in a screen font.

• Information you enter is in a boldface screen font.

System Use

• Enter commands by typing their names at the EXEC prompt and pressing the Return key.

• There are two EXEC prompt levels. The user-level prompt is the server name followed by a >, like this example:

CS> 

There is also a privileged-level prompt available to the system administrator by entering a password. It is the server name followed by a #, like this example:

CS#

• Use these editing commands when typing commands at the EXEC prompt:

Command	Function
Delete or Backspace	Erase characters
Ctrl-U	Delete line

• As a shortcut, you can abbreviate commands to the fewest letters that make them unique. The letters "sho" can be entered for the show command, for example.

• Certain EXEC commands display multiple screens with this prompt at the bottom of the screen:

--More--

Press the space bar to continue the output; type any other key to return to the prompt.

System Help

• Type a ? or the letter h to see a list of available commands at either EXEC prompt.

• Type a ? after the show and terminal commands to see more information about these commands.

• At any time during an active Telnet session, you can list the Telnet commands by typing this command at the system prompt:

Ctrl ^ ?

Type the Ctrl and Shift and 6 keys simultaneously, let go, and type ?.

Making Connections to DEC, UNIX, and IBM Hosts

Enter these commands at the EXEC prompt to connect to DEC, UNIX, and IBM hosts.

help

Displays information (help) about the user EXEC commands.

lat name [node nodename|port portname|/debug]

Connects to a learned service on a host running DEC LAT.

• name--Specifies a LAT learned service.

• node nodename--Specifies a connection to a LAT node.

• port portname--Specifies a destination LAT port name.

• /debug--Enables LAT message mode.

Example

CS> lat Mfg node mfg1

logout

Terminates the EXEC and closes any active terminal session to a DEC host.

rlogin host [debug]

Connects to a UNIX host using the rlogin protocol.

• host--Host name or Internet address.

• debug--Enables rlogin message mode.

Example

CS> rlogin Sun1

tn3270 hostname

Begins a terminal emulation session with a remote IBM host using the TN3270 application.

• hostname--Name of the IBM host.

Example

CS> tn3270 finance

Making Telnet Connections

Use these commands to make and manage Telnet connections.

[connect|telnet] host [port] [/keyword]

Enter either connect or telnet with a host name to make a TCP Telnet connection, or just enter a host name or Internet address.

• host--Host name or Internet address.

• port--Optional TCP port number; default is Telnet server port 23.

• /keyword--One of the following optional keywords:

/route:path--Specifies loose source routing; path is a list of host names or Internet addresses, ending with the destination.

/line--Enables Telnet line (local edit) mode.

/debug--Enables Telnet message mode.

/stream--Enables raw TCP stream mode for connecting to
non-Telnet ports.

Examples

CS> telnet nemesis /stream
CS> nemesis /route:10.1.0.11  10.1.1.12  crimea
CS> nemesis

resume [connection] [/keyword]

Resumes a previous Telnet connection.

• connection--Connection name or number; the default is the most recent connection.

• /keyword--One of the following keywords:

/line--Enables Telnet line mode.

/noline--Disables Telnet line mode and enables character-at-a-time mode (default).

/debug--Enables Telnet debugging mode.

/nodebug--Disables Telnet debugging mode (default).

/stream--Turns on stream processing, which enables a raw TCP stream with no processing of Telnet control sequences.

/nostream--Turns off stream processing, which enables the Telnet protocol (default).

/echo--Enables local echoing of characters (default).

/noecho--Disables local echoing of characters.

Example

CS> resume 2 /line

Starting SLIP Connections

Enter these commands to begin a connection to a host using SLIP.

slip [/compressed] {default|address}

Begins a SLIP connection.

• /compressed--Forces TCP header compression on lines configured with the slip header-compression passive command.

• default--Starts SLIP connection using assigned default address.

• address--Starts SLIP connection using a specific address.

Examples

CS> slip /compressed 131.108.2.5
CS> slip default

Starting X Windows

Enter these commands to start an automatic NCD X Windows session.

xremote lat service

Startup command for host supporting DECwindows login session.

• service--DEC LAT service.

Example

CS> xremote lat Mfg

xremote xdm hostname

Startup command for host supporting XDMCP.

• hostname--Name of host computer.

Example

CS> xremote xdm chrysalis

Follow these steps to manually start a session using an NCD X Windows terminal:

Type xremote and make note of your X display location.

Example:

Xremote enabled; your display is darkstar:2018
Start your client and type Xremote again.

Connect to the host using telnet, lat, or rlogin.

Set the location of the display using information given in step 1 and
enter the setenv DISPLAY command for UNIX, or the SET
DISPLAY command for DEC VAX/VMS.

Example for UNIX:

% setenv DISPLAY darkstar:2018

Example for VAX/VMS (type all on one line):

$ SET DISPLAY/CREATE/NODE=DARKSTAR/SERVER=2018/TRANSPORT=[transport]

Start the client application on the host system.

Return to the EXEC prompt by logging off host or typing the escape sequence.

Type xremote to access XRemote mode.

To disconnect, enter a reset request.

Managing Connections and Access

Enter these commands at the EXEC prompt to manage your connections and access to the terminal.

Ctrl ^ X

Escape sequence command you use to escape out of the current connection and return to the EXEC prompt, where you can make another connection or enter other EXEC commands. Allows multiple connections.

To enter this sequence, simultaneously press the Ctrl and Shift and 6 keys, let go, then type the X key. (This sequence can be redefined by your system administrator.)

lock

Locks access to the terminal by requesting a temporary password that must be re-entered to access the terminal.

login

Allows you to change your login name by prompting for a new username and password.

name-connection

Displays prompts to rename a connection number. Connection names and numbers are displayed by the where command.

{resume [connection]|<Return>}

Resumes the previous connection unless the optional connection argument is entered to resume a specific connection number or name. Pressing the Return key also resumes the previous connection. Use the where command to display open connections.

where

Lists all open connections. List includes connection number, host address, and name.

Monitoring Connections

Enter these commands at the EXEC prompt to monitor your connections.

show hosts

Displays names of known hosts on the network to which you may
connect.

show sessions

Lists all open connections, including connection number, host address, and name. Same as entering the where command.

show users

Displays a list of users currently logged in, along with host name, line number, and location.

Other Helpful Commands

Enter the following EXEC commands to check the entries in the queue for LAT services, to display the terminal parameters, to display the version of the software you are using, and to display statistics for XRemote connections.

show entry

Displays list of incoming queue entries for host-initiated DEC LAT connections.

show terminal

Displays local terminal parameter settings.

show version

Displays the current version of the software.

show xremote [line]

Displays XRemote server-wide statistics, unless the optional line argument is supplied to display statistics for just the line specified.

Disconnecting

Enter these commands at the EXEC prompt to terminate a connection.

disconnect [connection]

Use only when you are unable to log out of the host that you are connected to. The optional connection argument specifies a connection number; the default is the current connection.

{exit|quit}

Either command terminates the EXEC and closes any active terminal
session.

Setting Terminal Parameters

Enter the following commands at the EXEC prompt to temporarily change terminal parameter settings. The no option cancels or changes the command. Enter the show terminal command to check settings.

terminal databits {5|6|7|8}

Specifies data bits per character. Default is 8 bits per character.

terminal data-character-bits {8|7}

Sets the number of ASCII characters sent over network connections to hosts.

• 8--Sets full 8-bit ASCII international character set (default).

• 7--Sets 7-bit ASCII character set when connections are to hosts that routinely send parity over the network.

terminal [no] dispatch-character decimal-number1 [decimal-number2 ... decimal-numberx]

Defines or removes a character or string that causes a packet to be sent (dispatched).

• decimal-number--ASCII decimal representation of the character or
  several characters to form a string.

Example

CS> terminal dispatch-character 27 117

terminal [no] download

Sets or removes the ability of a line to act as a transparent pipe that can transmit data when running a program such as KERMIT, XMODEM,
or CrossTalk.

terminal [no] escape-character decimal-number

Sets an escape character for the current terminal line. Default is Ctrl ^.

• decimal-number--ASCII escape character.

Example

CS> terminal escape-character 127

terminal exec-character-bits {8|7}

Sets the number of characters read by the command parser, including those entered in configuration mode.

• 7--Sets 7-bit ASCII character set (default).

• 8--Sets 8-bit ASCII international character set in prompts and banners.

terminal flowcontrol {none|software [in|out]| hardware}

Sets the flow control method.

• none--No flow control (default).

• software [in|out]--Software flow control; in causes the terminal server to listen to flow control from the attached device; out causes the terminal server to send flow control information to the attached device. If not set, both directions are assumed.

• hardware--Hardware flow control.

terminal [no] hold-character decimal-number

Enables or disables a hold character for the current terminal line.
By default, a hold character is disabled.

• decimal-number--ASCII hold character or control sequence.

Example

CS> terminal hold-character 14

terminal [no] length screen-length

Sets the number of screen lines. A value of zero or the no keyword disables pausing between screens of output. The screen length specified can be learned by hosts. Default is 24.

• screen-length--Desired number of lines.

Example

CS> terminal length 0

terminal [no] monitor

Enables or disables logging of system messages on the current terminal.

terminal [no] notify

Establishes or removes message notification.

terminal [no] padding decimal-number count

Sets or removes character padding on a specific output character.
By default, no output characters are padded.

• decimal-number-- ASCII output character.

• count--Number of NULL bytes sent after the character.

Example

CS> terminal padding 12 5

terminal parity {none|even|odd|space|mark}

Defines the parity bit for the current terminal line. Default is none.

terminal special-character-bits {8|7}

Sets a mode that compares typed-in characters with special key sequences such as flow control, escape, and disconnect functions.

• 7--Sets the 7-bit ASCII character set (default).

• 8--Sets the full 8-bit international ASCII character set to support hosts that use these characters.

terminal speed baud

Changes the transmit and receive speeds of the current terminal line.
Default is 9600 baud.

• baud--Baud rate choices: For 500-CS select 300, 1200, 2400, 4800, 9600, 19200, or 38400; for ASM select standard and user-defined speeds in a range from 75 to 57600, depending upon interface card and applique.

Example

CS> terminal speed 19200

terminal [no] start-character decimal-number

Sets or removes the character that signals the start of data transmission when software flow control is in effect. Default is Ctrl-Q.

• decimal-number--ASCII start character.

Example

CS> terminal start-character 26

terminal stopbits {1|1.5|2}

Sets the number of transmitted stop bits. Default is 2.

terminal [no] stop-character decimal-number

Sets or removes the character that signals the end of data transmission when software flow control is in effect. Default is Ctrl-S.

• decimal-number--ASCII decimal representation of the desired stop
  character.

Example

CS> terminal stop-character 24

terminal [no] telnet-transparent

Sets or removes ability to send a RETURN as a RETURN followed by a NULL instead of followed by a LINE FEED signal.

Example

CS> terminal no telnet-transparent

terminal [no] terminal-type terminal-name

Records, removes, or changes the current terminal type.

• terminal-name--Terminal name passed to applications that set terminal types.

Example

CS> terminal terminal-type VT100

terminal transport [telnet|lat|pad|rlogin|none]

Sets the preferred protocol for the duration of the current session. Default is LAT.

terminal width columns

Sets or changes the columns displayed. Default is 80.

• columns--Sets preferred column width.

Example

CS> terminal width 132

Making X.3 PAD Connections

Enter this command to make connections to a PAD host.

pad {X.121-address|hostname} [/cud text] [/debug] [/reverse]

Begins connection to an X.3 PAD host.

• X.121-address--X.121 address.

• hostname--Defined X.25 host name.

• /cud text--Switch that includes text in the Call User Data field of the outgoing Call Request Packet.

• /debug--Switch that causes the informational level of logging messages to be printed whenever the remote host changes an X.3 parameter setting or sends any other X.29 control packet.

• /reverse--Switch that causes Reverse Charge calls to be accepted on a per-call, rather than a per-interface, basis.

Example

CS> pad 77630 /reverse

Setting X.3 PAD Parameters

Enter these commands to set X.3 PAD parameters. See Table 1 for parameter numbers and values.

resume [connection] [/keyword] [/set parameter:value]

Resumes PAD connections and allows changing local X.3 parameters during a connection.

• connection--Connection number.

• /keyword is one of:

/line--Enables line-mode editing.

/noline--Disables line mode and enables character-at-a-time mode, which is the default.

/debug--Displays informational messages whenever the remote host changes an X.3 parameter or sends an X.29 control packet.

/nodebug--Disables the informational display, which is the default.

/echo--Enables local echo, which is the default.

/noecho--Disables local echo.

• /set--Switch that sets the X.3 parameters defined by parameter and value, separated by a colon. These parameters and their values are described in Table 1 at the end of this booklet.

For outgoing connections, the X.3 parameters default to the following: 2:1, 3:2, 4:1, 7:4, 16:127, 17:21, 18:19.

All other parameters default to zero, but can be changed using the /set switch.

For incoming PAD connections, software sends an X.29 SET PARAMETER packet to set only the following parameters: 2:0, 4:1, 7:21, 15:0.

Example

CS> resume 3 /set 2:1

x3

Sets local PAD parameters directly, without using a command switch.

Example

CS> x3 2:1

PAD Parameters (1 of 3)

Par.	Action	Value	Description
1	Escape from Data Transfer		Not supported.
2	Local Echo Mode	0	No local echo (incoming PAD connection default).
		1	Local echo on (outgoing connection default).
3	Data Forward Character	0	None-full packet.
		1	Forward packet upon receipt of an alphanumeric character.
		2	Forward packet upon receipt of a RETURN (outgoing connection default).
		4	Forward packet upon receipt of ESCAPE, BEL, ENQ, or ACK.
		8	Forward packet upon receipt of DEL, CAN, or DC2.
		16	Forward packet upon receipt of ETX or EOT.
		32	Forward packet upon receipt of HT, LT, VT, or FF.
		64	All other characters in the ASCII chart.
4	Idle Timer	0	No timer.
		1-255	Delay value in twentieths of a second (default for both connection types is 1).
5	Device Control		Not supported.
6	PAD Service Signals		Not supported.
7	Receipt of BREAK	0	Ignore the BREAK signal.
		1	Transmit an INTERRUPT packet to notify the remote host or another PAD that the BREAK signal has been generated.
		2	Transmit a RESET packet to reset the virtual circuit.
		4	Transmit an X.29 break indication to the remote host, or to a PAD (outgoing connection default).
		8	Escape from data transfer mode.
		16	Discard output to the terminal by setting parameter 8 to a value of 1.
		21	Combination of values 1, 4 and 16 (incoming connection default).
8	Discard Output	0	Normal data delivery to the terminal (outgoing connection default).
		1	Discard all output to the terminal; set by parameter 7.
9	Return Padding		Not supported.
10	Line Folding		Not supported.
11	Baud Rate	10	50 baud
		5	75
		9	100
		0	110
		1	134.5
		6	150
		8	200
		2	300
		4	6001
		3	1200
		7	1800
		11	75/12002
		12	2400
		13	4800
		14	9600
		15	19200
		16	48000
		17	56000
		18	64000
12	Input Flow Control		Not supported.
13	Line Feed Insertion	0	Do not insert (outgoing connection default).
		1	Insert after transmitting RETURN to the terminal.
		2	Insert after echoing RETURN to the terminal.
		4	Insert after echoing RETURN to the remote host.
14	Line Feed Padding		Not supported.
15	Local Editing	0	Disables editing capabilities.
		1	Enables editing capabilities.
16	Character Delete	0-127	Select one ASCII character. Default is ASCII 127 (DEL).
17	Line Delete	0-127	Select one ASCII character. Default is ASCII 21 (CTRL-U).
18	Line Display	0-127	Select one ASCII character. Default is ASCII 18 (CTRL-R).

¹ Begins values that are PAD-type dependent.
² 75 is from PAD; 1200 is to PAD.