Introduction
Orbitor 3000 Reference Manual— 1-15
Orbitor Ethernet Bridge/Router Feature Definitions
Telnet
A Telnet LAN station or another Orbitor Ethernet bridge/router has the ability to connect to the Operator Interface of any
Orbitor Ethernet bridge/router supporting the Telnet feature. With the Telnet feature, all of your Orbitor Ethernet
bridge/routers may be managed from a single point.
Once a connection is established all of the menus of the other bridge/router are now available on the bridge/router that
initiated the connection. All menu operation on the initiating bridge/router is suspended during the connection. Entering
a control-C character <^C> at any time during the connection will cause a disconnection, and you will be back to the
menu of the first bridge/router.
To implement the Telnet feature, each bridge/router requires an IP address (see the Internet Set-Up Menu). It is advisable
to assign an IP address to each Orbitor Ethernet bridge/router in your network that you wish to use to make Telnet
connections.
Once a bridge/router has an IP address, any other Orbitor Ethernet bridge/router may connect to it by entering the IP
address in the connection attempt.
The IP addresses of the other Orbitor Ethernet bridge/routers must be entered manually each time you wish to make a
connection. The IP address of another bridge/router may be mapped to a name to simplify the connection process. Each
Orbitor Ethernet bridge/router may have a different set of names for corresponding IP addresses. Refer to the Remote
Access Set-Up Menu for more information on adding names to the bridge/router.
If a bridge/router does not have an IP address, Telnet connections cannot be initiated or received.
If a Telnet connected bridge/router receives a second connection attempt from another bridge/router the connection
attempt will be ignored.
Connecting to a bridge/router while the remote bridge/router menu system is operating with a different terminal setting
may cause unexpected screen errors. Once the connection to the bridge/router has been established, it is recommended
that the operator change the terminal setting to be the same as the initiating device.
When a Telnet connection is made to a bridge/router, ensure that the Telnet session is in character mode, and carriage
return padding (or translation) is set to NULL (or no translation). The extra character sent when carriage return padding is
on will cause some displays to behave erratically.
Link Compression
The Orbitor Ethernet Bridge/Router’s optional compression feature multiplies the effective data throughput across wide
area links operating at speeds from 9600 bps through to 256 Kbps. The exact amount a given transmission can be
compressed is dependent upon the type of data being transferred over the wide area network. As an example, because of
their repetitive make-up, most graphics and database files can easily be compressed by a ratio of 6:1. In contrast, other
types of files (such as binary files), that are not as repetitive, typically yield a compression ratio of 2:1. It should also be
noted that compression ratios are entirely dependent upon the make-up of the specific file — while it may be possible to
compress a given ASCII file far beyond the 6:1 ratio, a different ASCII file may only compress to a ratio of 4:1 or lower.
