Cabletron Systems HSIM-W87 manual WAN Terms and Acronyms

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WAN Terms and Acronyms

PLB — Payload Loop Back, ESF loopback including the facilities datalink.

Point of Presence — The point between the carrier provided equipment and services and the customer provided equipment and services.

PPPPoint-to-Point Protocol, provides a method for transmitting datagrams over serial point-to-point links.

PRI — Primary Rate Interface, an ISDN service providing 23 “B” (Bearer) channels of 64 Kbps and one 64 Kbps “D” (Data) channel for signaling and control.

PVC — Permanent Virtual Circuit, a virtual circuit that provides the equivalent of a dedicated private line service.

Q.933-AQ.933 Annex A, an ITU link management protocol specification used in Frame Relay.

RAI — Remote Alarm Indicator, is declared in C-bit Parity DS3 applications, after detecting the Yellow Alarm Signal on the alarm channel.

SDLC — Synchronous Data Link Control, layer 2 (link layer) protocol developed by IBM for SNA connectivity. Basis for HDLC.

SEFS — Severely Errored Framing Seconds, is a second with one or more OOF errors or a detected incoming AIS.

SNA — Systems Network Architecture, data communication network architecture developed by IBM in the 1970’s.

T1 — A Bell System term that refers to the physical carrier, or system of transmission media and regenerators, used to transmit a digital signal at 1.544 Mbps.

T1.617-DT1.617 Annex D, an ANSI link management protocol specification used in Frame Relay.

TDM — Time Division Multiplexing, a technique in which separate data or voice signals are transmitted simultaneously over a single communications medium based on time interleaving.

Timeslot — A standard 64,000 bit/second channel. Synonymous with DS0 (Digital Signal, level 0).

HSIM-W87 User’s Guide

C-5

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Contents HSIM-W87 Page HSIM-W87 User’s Guide Industry Canada Notice Cabletron Software Program License HSIM-W87 User’s Guide Contents Contents Chapter Introduction Using this ManualImportant Notice Overview Imux Data Flow in the HSIM-W87 FeaturesConnectivity Inverse Multiplexing Imux HdlcPriority Queuing 5 DS1 AlarmSnmp and MIB Support Document Conventions Lanview Diagnostic LEDsBold type Related DocumentationYour email address Getting HelpHSIM-W87 User’s Guide Unpacking the HSIM-W87 Chapter InstallationInstalling the HSIM-W87 in an Interface Module Installing the HSIM-W87Installing the HSIM-W87 Installing the HSIM-W87 Installing the HSIM-W87 in a Standalone Device HSIM-W87 Setup Connecting the HSIM-W87 to the NetworkLanview Leds ChapterLanview LEDs Local Management Chapter ManagementManagement Network Tools Help CommandsCommand Imux Built-in CommandsImux 1 -ac 1 ExampleWanpq Command wanpqDs1alarm Command ds1alarm Syntax ds1alarmCommand dsx1 Dsx1 Command dsx3Dsx3 Options Special CommandsSyntax DescriptionImux 1 -ac 1 Sample Imux ConfigurationSample Imux Configuration Enabling the Imux Application Troubleshooting the HSIM-W87 Chapter TroubleshootingHardware Troubleshooting Status STS LED is OFF Problems with the Firmware Image Investigating Software Configuration ProblemsHSIM-W87 User’s Guide Physical Properties Appendix a SpecificationsEnvironmental Requirements Regulatory Compliance Appendix B Typical Configuration Appendix B Typical Configuration Appendix C WAN Terms and Acronyms Appendix C WAN Terms and Acronyms WAN Terms and Acronyms HSIM-W87 User’s Guide WAN Terms and Acronyms HSIM-W87 User’s Guide