Telex KP-812 User Manual page 66

ISO (Camera ISO)
M
Matrix
P
Party Line (PL)
Port
66
ISO is a means for a keypanel operator to isolate a particular intercom port for private
communication. While the intercom port is isolated, it can only hear audio from the
keypanel operator. ISO is frequently used in television broadcasting to temporarily
isolate a member of a camera party line. The isolated camera operator can then
receive directions without interference from other audio traffic on the party line. ISOs
are setup using the intercom system configuration software. Each ISO can also be
given a name which is meaningful to keypanel operators. Once an ISO has been set
up and named, it can be assigned to any keypanel key (provided that ISO assignment
has not been restricted or disabled in the intercom system configuration software).
For further information about ISOs, see the AZedit user manual.
"Matrix" is a term inherited from earlier point-to-point intercom systems, where all
point-to-point communication was accomplished by closing specific switches in a
switching matrix. Examples include the RTS™ CS9500, CS9600, and CS9700
Intercom Systems. In many instances, "Matrix" is used interchangeably with "Inter-
com Systems". RTS™ ADAM, ADAM CS, and Zeus Intercom Systems, on the other
hand, do not use a switching matrix, but use a method called Time Division Multiplex-
ing (TDM), in which communications are routed as digital packets. However, use of
the term "matrix" persists since packet routing basically accomplishes the same thing
as a conventional switching matrix: namely, connecting distinct talkers and listeners.
A party line (also called a conference line) is a group of intercom ports which can
always talk and/or listen to each other. Party lines have default names PL01, PL02
etc. These names can be changed to more meaningful names using Other Alpha
setup in AZedit. Members are assigned to a party line using Party Line setup in
AZedit. Once a party line has been set up, it can also be assigned to a keypanel key
either from the configuration software or at a programmable keypanel. This allows the
keypanel operator to talk and/or listen to the party line without being a member.
IMPORTANT: Do not confuse special lists and party lines. A special list is used when
a keypanel operator needs to occasionally talk or listen to a group of intercom ports
that are otherwise unrelated. A party line is typically used when several users of non-
keypanel devices (such as belt packs or camera intercoms) are engaged in a specific
common activity and they need to talk and/or listen to each other all the time. Key-
panels are almost never members of party lines (although they can be). However, a
keypanel key can be assigned to occasionally talk or listen to a party line, if desired.
Remember, party lines are primarily set up for party line members, with occasional
access by keypanel operators, while special lists are set up exclusively for keypanel
operators to talk or listen to several unrelated intercom ports. For specific information
about party line setup, see the AZedit User Manual.
The ports are the individual channels that devices are connected to. Devices include:
2-way communication devices, such as keypanels, belt packs, etc.; Audio sources,
such as broadcast feeds or background music; Miscellaneous audio output devices,
such as powered loudspeakers, PA systems, etc. The audio signal from any input
port can be routed to any output port. For example, during keypanel setup, you
assign keypanel keys so that keypanel operators can talk and listen to other intercom
ports. Communication of this type is called point-to-point communication. You can
also route signals between intercom ports without keypanels. One way to do this is to
force crosspoints in the Crosspoint Status screen of AZedit. Another way to do this is
to with a GPI Input. Intercom ports have identification numbers 001,002, etc. These
numbers cannot be changed, but may not be commonly known to intercom system
users. Each intercom port also has a default name, called an "alpha", because this
KP-812 Keypanels User Manual