Emulators
An emulator is a software application that allows your system to function as if you were using a different terminal or printer. A terminal emulator connects to a host system to access data or applications. Some terminal emulators provide a facility to transfer files to and from the host. Others provide an application programming interface (API) to allow program-to-program communication and automation of host tasks. A printer emulator allows the host either to print files on a local printer or store them in printable form to be printed or edited later.
TCP/IP commands for emulation
The Transmission Control Protocol/Internet Protocol (TCP/IP) software includes the telnet and rlogin commands, which allow you to connect to and access a remote TCP/IP system.
| Item | Description |
|---|---|
| telnet | Allows a user to log in to a remote host by implementing the TELNET protocol. It is different from the rlogin command in that it is a trusted command. A trusted command is one that meets all security levels configured on your computer. Systems that require extra security should allow only trusted commands. Standards for trusted commands, processes, and programs are set and maintained by the U.S. Department of Defense. |
| tn | Performs the same function as the telnet command. |
| rlogin | Allows a user to log in to a remote host. It is different from the telnet command in that it is a nontrusted command and can be disabled if your system needs extra security. |
For more information about TCP/IP, see Transmission Control Protocol/Internet Protocol.
BNU commands for emulation
The Basic Networking Utilities (BNU) software includes the ct, cu, and tip commands, which allow you to connect to a remote system that uses the AIX® operating system.
| Item | Description |
|---|---|
| ct | Enables a user on a remote terminal, such as a 3161, to communicate with another
terminal over a telephone line. The user on the remote terminal can then log in and work on the
other terminal. The ct command is similar to the cu command but not as flexible. For example, you cannot issue commands on the local system while connected to a remote system through the ct command. However, you can instruct the ct command to continue dialing until the connection is established or to specify more than one telephone number at a time. |
| cu | Connects your terminal to another terminal connected to either a UNIX or non-UNIX
system. After the connection is established, you can be logged in on both systems at the same time, executing commands on either one without dropping the BNU communication link. If the remote terminal is also running under UNIX, you can transfer ASCII files between the two systems. You can also use the cu command to connect multiple systems, and commands can then be executed on any of the connected systems. |
| tip | Connects your terminal to a remote terminal and enables you to work on the remote terminal as
if logged in directly. You can use the tip command to transfer files to and from the remote system. You can use scripting to record the conversations you have with the tip command.
Note: You must have a login on the remote system to use the tip command. |
For more information about BNU, see Basic Networking Utilities.