(1) (Call Detail Reporting) See call accounting. (2) (Common
Data Rate) The standard 13.5 MHz sampling rate for 480i and 576i
digital video systems. See ITU-R BT.601 and CIF. (3) (CD-
Recordable) A writable CD technology using a type of compact
disc that can be recorded, but not erased (CD-Rs are "write
once" discs). CD-R discs are used to master CD-ROMs, back up
data and make copies of data for distribution, and they can be
read by most CD drives, including older CD-ROM units. "Burning"
a CD-R requires a CD-R drive, CD-RW drive or a combo CD/DVD
drive, the latter commonly found on newer personal computers. In
practice, the term "CD" refers to all CD formats. The phrase
"burn a CD" really means "burn a CD-R." One at a Time CD-R
drives are called "one-off" machines, because they write one
disc at a time, unlike the CD manufacturing process that stamps
them out by the thousands. However, high-end CD-R duplicators
with multiple drives can make hundreds of copies per day and can
also print the labels. To record a