Downstream/Upstream | SMC Networks SMC7901WBRA2 B1 guide

CHAPTER 4 Status Information

DSL Statistics

The following items are displayed on this page:

◆Mode — Displays the connection mode for the ADSL Router, which is fixed at ADSL2+.

◆Latency — Displays the hop-count - the number of routers your packets must navigate before they reach the destination.

◆Trellis Coding — Displays Trellis modulation (also known as trellis coded modulation, or simply TCM) - a modulation scheme which allows highly efficient transmission of information over band-limited channels such as your telephone line.

◆Status — Displays the ADSL connection status (“activating”, “up” or null).

◆Power Level — Displays the power level employed for ADSL port filtering.

DOWNSTREAM/UPSTREAM

Refers to statistics either downloaded or uploaded from the ADSL Router

◆SNR Margin (dB) — Displays the current signal-to-noise margin expressed in decibels (dB). SNR is the ratio of signal power to the noise power corrupting the signal.

◆Attentuation (dB) — Displays the amount of attenuation in signal strength due to conductive losses in transmission medium. Attenuation affects the propagation of waves and signals in electrical circuits, expressed in decibels (dB).

◆Output Power (dBm) — Displays the current input/output power at the ADSL Router’s DSL interface, expressed in decibels (dB) of the measured power referenced to one milliwatt (mW).

◆Attainable Rate (Kbps) — Displays the maximum attainable payload on the downstream and upstream channels, expressed in kilobits per second.

◆Rate — Displays the actual payload carried on the downstream and upstream channels.

◆K (number of bytes in DMT frame) — Displays the number of bytes in a DMT frame. DMT (discrete multi-tone modulation) - is a frequency- division multiplexing (FDM) scheme utilized as a digital multi-carrier modulation method.

◆R (number of check bytes in RS code word) — Displays the number of redundancy bytes used for error correction. Redundancy bits are the number of bits used to transmit a message minus the number of bits of actual information in the message.

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SMC Networks SMC7901WBRA2 B1 manual Downstream/Upstream

Contents

User Guide User Guide Page Warranty and Product Registration Compliances Federal Communication Commission Interference StatementFCC Radiation Exposure Statement EC Conformance Declaration 1999/5/EG. Wien Newzealand Telepermit Customer Information Service Requirements About this Guide Contents WEB Configuration WAN LAN Wlan 101 111 Section Appendices Contents Figures Wlan Basic Settings Second Bssid Ddns TZO Tables Section KEY Hardware Features IntroductionDescription of Capabilities Introduction Package Contents Hardware Description Top Panel Antenna LEDs Introduction Installing the Adsl Router System RequirementsLocation Selection Mounting on a Horizontal Surface Attach Feet Mounting on a Wall Wall Mounting Connecting and Powering on Wall Mounting Screws Installing the Adsl Router Installing the Adsl Router Connecting and Powering On Initial Configuration ISP SettingsConnecting to the Login Login Home page and Main Menu Common WEB page Buttons DSL Internet Connection Settings Wizard LAN Wlan Basic Settings Wlan Setting Changes System Restarting Initial Configuration WEB Configuration Section Web Configuration Status Information System Status System WAN Status WAN LAN LAN Status Wlan Wlan Status Traffic Statistics Status Traffic Statistics DSL Statistics Status DSL Statistics DOWNSTREAM/UPSTREAM ARP Table Status ARP Table Bridging Table Status Bridging Table Routing Table Status IP Routing Table Status Information WAN Configuration Channel Configuration Current ATM VC Actions Edit Editing an IP entry in the Current ATM VC Table Actions Delete Confirm Delete ATM Settings Auto PVC Settings Current ATM VC Adsl Settings WAN Configuration Tone Mask WAN Configuration LAN Configuration LAN Interface Dhcp Settings No Dhcp Dhcp Relay Dhcp Server MAC-Based Assignment LAN Configuration Wlan Configuration Wlan Basic Settings Wlan Basic Settings Second Bssid Second Bssid Wireless Security Setup Parameters WEP 64bits/128bits Selects between 64 bit and 128 bit keys WEP KEY Setup Radius Server Wireless Security Setup WPA/WPA2 Setup WPA Security Access Control Enterprise RadiusPersonal PRE-SHARED KEY Wireless Security Setup Wireless Distribution System WDS WDS ADD WDS AP Current WDS AP List Advanced Settings Wireless Security Setup Advanced Settings Wlan Configuration Firewall Configuration IP/Port Filtering Settings IP/PORT Filtering Current Filter Table MAC Filtering Settings MAC Filtering Current Filter Table Port Forwarding Settings Port Forwarding Current Port Forwarding Table URL Blocking URL Blocking Table Domain Blocking Keyword Filtering Table DMZ Domain Block Table DMZ Settings Prompt for Saving to Configuration DoS Settings DOS Firewall Configuration 100 Administration Settings COMMIT/REBOOT Remote Access Rebooting BACKUP/RESTORE Settings Backup/Restore Settings System LOG System Log System LOG Password Setup Password Setup Upgrade Firmware Upgrade Firmware Access Control Lists ACL Configuration ACL Table Time Zone Upnp UPnP Advanced Configuration DNS Server Configuration DNS Server Ddns Ddns DynDns Dyndns Settings Dynamic Ddns Table Routing Configuration Static Routing Static Route Table RIP Configuration RIP Config Table IP QOS Specify Traffic Classification Rules Assign Priority AND/OR IP Precedence AND/OR Type of Service Or Dscp Igmp Proxy Configuration Igmp Configuration Bridge Configuration Bridge Configuration IP Passthrough IP Passthrough Snmp Protocol Configuration Snmp Configuration TR-069 Configuration ACS Connection Request Certificate Management 126 Diagnostics Ping ATM Loopback Ping Results Adsl Tone Diagnostics Adsl Tone Diagnostics Diagnostics Test Diagnostics Test LAN Connection Check Adsl Connection Test Appendices Troubleshooting Diagnosing LED IndicatorsIf YOU Cannot Connect to the Internet Before Contacting Technical Support 135 136 Hardware Specifications 802.11b Snmp Cables and Pinouts TWISTED-PAIR Cable Assignments STRAIGHT-THROUGH Wiring 10/100BASE-TX PIN Assignments Crossover Wiring Straight Through Wiring RJ-11 Ports 3 4 5 Glossary LAN Ssid TkipVAP WPA-PSK Index Index 149 149100000005A R01