Cisco Systems UBR7225VXR specifications GL-2

Glossary

B

BER

C

CATV

CCS

CES

Chrominance

CMTS

C/N ratio

CNR

CPE

Critical alarm

CSRC

CSU/DSU

CTS

Bit error rate.

Cable television. References to headend or distribution hub.

Common channel signaling.

Circuit emulation service.

The color portion of a video signal.

Cable modem termination system, such as the Cisco uBR7225VXR router.

Carrier-to-noise ratio.

Cisco Network Registrar.

Customer premises equipment.

An alarm condition that might affect most or all subscribers that connect to the reporting node. To obtain more information about a problem, use the show facility-alarm status command.

See also Major alarm and Minor alarm.

Cisco Subscriber Registration Center.

Channel service unit/data service unit.

Clear To Send.

D

DCD

DCE

DHCP

DNS

DOCSIS

DSR

Data carrier detect.

Data circuit-terminating equipment (ITU-T expansion). Devices and connections of a communications network that comprise the network end of the user-to-network interface. The DCE provides a physical connection to the network, forwards traffic, and provides a clocking signal used to synchronize data transmission between DCE and DTE devices. Modems and interface cards are examples of DCE. Compare with DTE.

Dynamic Host Configuration Protocol.

Domain Name System.

Data-over-Cable Service Interface Specification.

Data set ready.

	Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide
GL-2	OL-17309-02