Cisco Systems 6200 appendix NTC OC-3 Physical Description, OC-3c Trunk Port

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1 Hardware Description

78-5296-02 10/02/98

Figure 1-5

NTC OC-3 Application

ATM on

OC-3c

NTC

Downstream

data

transfer

Optical

interface

Upstream

data

transfer

Cisco

6200

Line

module

12688

The optical interface performs the optical-to-electrical and electrical-to-optical conversions. Its other tasks include clock recovery, overhead processing, cell delineation, and diagnostic information retrieval.

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 an 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.

1.3.2 NTC OC-3: Physical Description

The NTC resides in slot 1 (the left-most slot as you face the front of the chassis). Each OC-3 NTC faceplate is marked NTC OC3-SM (single-mode) or NTC OC3-MM (multimode). The faceplate (see Figure 1-6) includes the fixtures discussed in the following paragraphs.

OC-3c Trunk Port

The dual SC connectors (one for transmitting, one for receiving) for the Cisco 6200 network trunk port are recessed into the OC-3 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.

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Contents Hardware Description Cisco DSL Product FamilyCisco 6200 Chassis Module CompartmentBackplane Cisco 6200 Chassis, Front ViewEthernet Management Bus Primary a and Secondary B H-BusesCisco 6200 Chassis, Rear View Alarm Relay Connection Connections to Pots Splitters or Telephone LinesUnused Connectors Power Entry Modules PEMsPower Terminals Fan TrayCooling Vents Dslam SpecificationsStandards and Certifications Cisco 6200 Dslam SpecificationsSpecification Description Category DescriptionWhat is the NTC OC-3? Network Trunk Cards NTCsNTC OC-3 Physical Description OC-3c Trunk PortDescribes the LEDs on the faceplate of the OC-3 NTC Reset SwitchLED Indicators NTC OC-3 FaceplatesLEDs on the NTC OC-3 Color Condition IndicatedLists the physical and electrical specifications of the NTC What is the NTC STM-1?NTC OC-3 Specifications NTC OC-3 SpecificationsNTC STM-1 Application NTC STM-1 Physical Description Trunk PortDescribes the LEDs on the faceplate of the NTC STM-1 NTC STM-1 FaceplatesNTC STM-1 Specifications LEDs on the NTC STM-1Cisco 6200 is controlled and managed by the MPC Management Processor Card MPCFunctional Description NTC STM-1 SpecificationsPhysical Description ACO SwitchMPC Faceplate Ethernet Port Console PortPcmcia Slots and Ejection Buttons All LEDs on the MPC are described in TableLists the physical and electrical specifications of the MPC MPC SpecificationsMPC Specifications How the SLC Handles Traffic What is the SLC 8CAP?Subscriber Line Card SLC Transmission Rates and Modem TrainingStatistics 10 SLC 8CAP OperationDescribes the LEDs on the faceplate of the SLC SLC 8CAP Physical DescriptionSLC 8CAP Faceplate SLC 8CAP LEDs SLC 8CAP Specifications SLC 8CAP SpecificationsWhat is the SLC 8DMT? How the SLC 8DMT Handles TrafficTwo modes are available for setting transmission rates SLC 8DMT Physical Description 11 describes the LEDs on the faceplate of the SLC SLC 8DMT FaceplateSLC 8DMT LEDs SLC 8DMT Specifications SLC 8DMT Specifications
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