Cisco Systems UBR7225VXR specifications GL-5

NTSC

NVRAM

O

OIR

P

PAL

PCI

Q

QAM

QPSK

R

RTS

S

SDH

SDRAM

SECAM

SGCP

SONET

SRAM

STB

Glossary

National Television System Committee.

Nonvolatile random-access memory.

Online insertion and removal.

Phase alternating line.

Protocol control information.

Quadrature amplitude modulation. A modulation technique using variations in simple amplitude.

Quaternary phase shift keying. A compression technique used in modems and wireless networks.

Request to send.

Synchronous Digital Hierarchy.

Synchronous dynamic random-access memory.

SEquential Couleur Avec Memoire.

Simple Gateway Control Protocol.

Synchronous Optical Network. High-speed synchronous network specification developed by Bellcore and designed to run on optical fiber. STS-1 is the basic building block of SONET. It was approved as an international standard in 1988.

Static random-access memory.

Set-top box.

	Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide
OL-17309-02		GL-5