ER1 User Guide B-1
Telepresence Over the
Internet
In order for the user to teleoperate a home robot from work, the IP address and the port
number of the laptop controlling the robot must be known. An IP address is a number of
the form x.x.x.x, where x is between 0 and 255. The port number is an integer between 0
and 65535. The port number of ER1 teleoperation defaults to 9000, but the user can
change this in the remote settings page of the ER1 Robot Control Center software running
on the robot laptop.
The IP address of the robot is the IP address assigned to the user’s DSL or cable
connection by the user’s broadband provider. Typically, a new dynamic IP address is given
to the user on each new connection. However, DSL and cable connections are always on
and can persist for days, if not weeks, so the dynamic IP address is fairly stable over time.
To figure out what the current assigned IP address is, the user can use a tool such as
MyWanIP, freely downloadable from http://www.mywanip.com/
. The assigned IP address
is also available in the control software for the user’s home router. The documentation for
the various cable / DSL routers should have information on where this IP address can be
found.
Appendix B
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