Zhone IMACS 8000 User Manual page 764

Model No.
Running Head
CRC using six check bits
CSA
Carrier Serving Area
CSC
Common Signaling Channel
CSU
Channel Service Unit, an interface to a T1 line that terminates the local loop.
CTE
Channel Terminating Equipment (Network)
CTS
Clear To Send, a lead on an interface indicating that the DCE is ready to receive data.
D4
A common T1 framing format, consisting of 12 frames. Also known as SF framing.
DACS
Digital Access and Cross-connect System (an electronic digital test access and patching
system)
DCC
Data Communication Channel
DCE
Data Communications Equipment
DCS
Digital Cross-connect System
D-channel
Full-duplex, 16 kbps BRI channel or 64 kbps PRI ISDN channel.
DDS
E-6 Reference Guide