Cisco Systems 6200 appendix NTC STM-1 Physical Description, Trunk Port

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78-5296-02 10/02/98

Hardware Description 1

The upstream data transfer unit receives data via a 16-bit parallel input from the internal bus on the node’s backplane. ATM cells are received from a subscriber line card (SLC) channel only after that channel has won access to the upstream data bus from the other contending line channels. The upstream data transfer unit monitors the contention bus to direct inbound data to the optical interface.

The downstream data transfer unit inserts data onto the bus. This circuit inserts idle cells when a full data cell is not yet ready for transmission.

1.3.5 NTC STM-1: Physical Description

The NTC resides in slot 1 (the left-most slot as you face the front of the chassis). Each NTC STM-1 faceplate is marked NTC STM1-SM (single-mode) or NTC STM1-MM (multimode). The faceplates (see Figure 1-8) include the fixtures discussed in the following paragraphs.

Trunk Port

The dual SC connectors (one for transmitting, one for receiving) for the Cisco 6200 network trunk port are recessed into the NTC faceplate to prevent the cables from protruding too far outside the faceplate.

Warning Class 1 laser product.

Warning Because invisible laser radiation may be emitted from the aperture of the port when no cable is connected, avoid exposure to laser radiation and do not stare into open apertures.

The fiber optic communication channels in the single-mode trunk card (NTC STM1-SM) operate with laser energy, which can be harmful, especially to the eyes. During normal operation this energy is confined to the cable and presents no danger. To avoid injury when you are connecting or disconnecting optical channels, observe these precautions:

•Always disconnect the card from the backplane before connecting or disconnecting optical cables.

•

•

Always keep the protective cap on the optic connector when the connector is not in use.

Never look into an optical cable or connector.

Reset Switch

The reset switch is recessed behind the faceplate to avoid accidental disturbance. It is not for customer use.

Cisco 6200 User Guide

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Contents Cisco DSL Product Family Hardware DescriptionModule Compartment Cisco 6200 ChassisCisco 6200 Chassis, Front View BackplanePrimary a and Secondary B H-Buses Ethernet Management BusCisco 6200 Chassis, Rear View Connections to Pots Splitters or Telephone Lines Alarm Relay ConnectionFan Tray Power Entry Modules PEMsPower Terminals Unused ConnectorsDslam Specifications Cooling VentsCategory Description Cisco 6200 Dslam SpecificationsSpecification Description Standards and CertificationsNetwork Trunk Cards NTCs What is the NTC OC-3?OC-3c Trunk Port NTC OC-3 Physical DescriptionNTC OC-3 Faceplates Reset SwitchLED Indicators Describes the LEDs on the faceplate of the OC-3 NTCColor Condition Indicated LEDs on the NTC OC-3NTC OC-3 Specifications What is the NTC STM-1?NTC OC-3 Specifications Lists the physical and electrical specifications of the NTCNTC STM-1 Application Trunk Port NTC STM-1 Physical DescriptionNTC STM-1 Faceplates Describes the LEDs on the faceplate of the NTC STM-1LEDs on the NTC STM-1 NTC STM-1 SpecificationsNTC STM-1 Specifications Management Processor Card MPCFunctional Description Cisco 6200 is controlled and managed by the MPCACO Switch Physical DescriptionMPC Faceplate All LEDs on the MPC are described in Table Console PortPcmcia Slots and Ejection Buttons Ethernet PortMPC Specifications Lists the physical and electrical specifications of the MPCMPC Specifications Transmission Rates and Modem Training What is the SLC 8CAP?Subscriber Line Card SLC How the SLC Handles Traffic10 SLC 8CAP Operation StatisticsSLC 8CAP Physical Description Describes the LEDs on the faceplate of the SLCSLC 8CAP Faceplate SLC 8CAP LEDs SLC 8CAP Specifications SLC 8CAP SpecificationsHow the SLC 8DMT Handles Traffic What is the SLC 8DMT?Two modes are available for setting transmission rates SLC 8DMT Physical Description SLC 8DMT Faceplate 11 describes the LEDs on the faceplate of the SLCSLC 8DMT LEDs SLC 8DMT Specifications SLC 8DMT Specifications
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