Clear-Com i-Series Panels - Manual (Page 85)

Full duplex Refers to transmission of signals in two directions
simultaneously.
Hopping Refers to making a trunk connection through other matrices to a
destination matrix.
IFB Interruptible Foldback. The term foldback refers to sending
program audio / feed, or some other audio mix, back to
announcers while they are on the air. Doing so allows
announcers to monitor themselves, other announcers,
videotapes of commercials, or some mix of sources, while they
on the air. This is typically found in television news and live
broadcast events.
Announcers typically wear a small ear piece so they can hear the
selected foldback audio mix. When a director wants to give
directions to an announcer on air, or to announce changes in the
program, the director must interrupt the foldback. To do this, the
director uses a channel specifically set up to interrupt the
foldback audio.
Interface module A piece of electronic hardware designed to convert the 4-wire
signals of a central matrix port to some other form of
communication, such as 2-wire partyline, telephone, etc. The
interface module is connected to a central matrix port. The
external non-4-wire device is then connected to the interface
module.
ISO The ISO function, short for panel ISOlation, allows a panel
operator to call a destination and interrupt all of that destination’s
other audio paths and establish a private conversation. When the
call is completed the destination’s audio pathways are restored
to their original state before the interruption.
Keygroup KeyGroups provide a way of assigning a label to multiple panels
simultaneously even within a networked matrix system. Once the
KeyGroups have been defined using ECS, all the keys within a
KeyGroup can be changed with a single assignment in
Production Maestro (Pro mode only).
Label A label is an alphanumeric name of up to five characters that
identifies a source, destination, or control function accessed by
an intercom panel. Labels appear in the displays of the intercom
panel.
Labels can identify panels, ports interfaced to other external
equipment, fixed groups, party lines, and special control
functions.
85 I-Series Panels User Guide