2- and 4-wires
If your studio has an outside broadcast it is usually impractical to run a cable with talkback to the production personnel at the location. The easy answer is to use cables that have already been laid throughout the country – which is where telephone companies come into the picture.
2-wires and 4-wires are, quite simply, telephone lines. For television communication a 2-wire normally sends talkback in one direction. If you want the person at the other end to be able to reply there needs to be a 2-wire running back. This combination of two 2-wires working as a pair is a 4-wire.
2-wires and 4-wires need to be booked. They are not instantly available, so make sure they have been arranged well in advance, normally at the same time ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access