He is talking about an intercom
system, they are commonly referd to as cans. I think it comes from the idea of comunicating with two cans with strings attached.
I do not know the Riedel Beltpacks at all i have never heard of them till now. so i visited there web site. What we need to know is the model number of the belt pack.
now a standard
system would work like this
1
base station - which powers the whole
system
1 or more belt packs - these rely on the
base sation for
power
headsets for every belt pack and
base station you have
cable. you need the right type of
xlr to create a chain of coms. it is usualy 3 pin but i have seen 4 pin for cameras.
Now if your
system is wireless you will need a wireless
base station which will connect your beltpacks together.
Hope this helps, you should check out there web site for more information
http://www.riedel.net/
JH
opps
beat me to it it is an intercom he is intrested in.