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8021-A2-GZ40-20 November 2000

Hotwire

Shelf Concentration Module (SCM) Card

Installation Instructions

Document Number 8021-A2-GZ40-20

November 2000

What is a Hotwire Shelf Concentration Module?

A Hotwire

Shelf Concentration Module (SCM) is a circuit card assembly (CCA)

that contains a parentcard with an ATM switch, a backplane interface, a processor,

a cell mux/demux, and an uplink childcard. The childcard determines the type of

ATM uplink supported by the SCM.

When the SCM card is used in a Hotwire 8820 GranDSLAM chassis, it aggregates

DSL traffic from each of the DSL port cards in the chassis on the chassis’

backplane bus and concentrates it onto an ATM interface. The model number of

the SCM card differs, depending on what type of ATM uplink childcard is being

used.

SCM Card Model ATM Uplink Childcard

8021 DS3

8022 OC3 with multi-mode fiber

8023 OC3 with single-mode fiber for immediate reach (15 km)

8024 OC3 single-mode fiber for long reach (40 km)

8025 E3

8026 DS1 IMA (ATM Inverse Multiplexing)

8027 E1 IMA (75 ohm)

8028 E1 IMA (120 ohm)

Summary of content (11 pages)

PAGE 1
Hotwire® Shelf Concentration Module (SCM) Card Installation Instructions Document Number 8021-A2-GZ40-20 November 2000 What is a Hotwire Shelf Concentration Module? A Hotwire® Shelf Concentration Module (SCM) is a circuit card assembly (CCA) that contains a parentcard with an ATM switch, a backplane interface, a processor, a cell mux/demux, and an uplink childcard. The childcard determines the type of ATM uplink supported by the SCM.
PAGE 2
Product Documentation Online Complete documentation for this product is available at www.paradyne.com. Select Library → Technical Manuals → Hotwire DSL & MVL Systems.
PAGE 3
Installing the SCM Card Procedure To install the Hotwire SCM Card in Slot A of the GranDSLAM chassis: 1. If there is a filler plate covering the slot, remove it. 2. Remove the yellow screw covers. 3. Insert the card into the card guides of the slot on the chassis. 4. Carefully slide the card into the slot. Lift the insertion/ejection levers away from the faceplate until the card begins to engage the connectors on the backplane. Then press in on the insertion/ejection levers until the card is fully seated.
PAGE 4
IMA Uplink Card Connector Pinouts The IMA uplink has a RJ48M 50-pin Telco connector with 8 Tip/Ring and 8 Tip1/Ring1 connections that conforms to ANSI T1.403-1999. Paradyne offers an octopus cable for use with the IMA uplink (Feature No. 8026-F1-001 for Models 8026 and 8028, and Feature No. 8027-F1-001 for Model 8027). These cables contain a required ferrite to meet EMI requirements. If purchasing other Telco cables, you must attach the supplied ferrite and cable tie as shown below.
PAGE 5
Table 1 lists connector pin assignments for Models 8026 and 8028. Table 2 lists connector pin assignments for Model 8027. Table 1. Feature No.
PAGE 6
Table 1. Feature No. 8026-F1-001 Connector Pin Assignments (2 of 2) DS1 or 120 Ohm E1 Port RJ48M 50-Pin Telco RJ48C Connector Connector Pinouts Pinouts Function Port 8 48 5 Data Out (Tip) 23 4 Data Out (Ring) 47 2 Data In (Tip) 22 1 Data In (Ring) Table 2. Feature No.
PAGE 7
Table 2. Feature No.
PAGE 8
SCM Card LEDs The following table describes the meaning and states of the LEDs on the Hotwire SCM card faceplate. Example faceplates are shown at left. Card functioning normally. Winking describes a recurring pulse when the LED is ON longer than OFF at a ratio of approximately 10:1. Green, On SCM card failure. System processing functions have stopped. Off No power to card. Yellow, On Alarm is present on SCM. Off No alarms. Yellow, On Test in progress. Off No tests.
PAGE 9
SCM Card Technical Specifications Table 3. SCM Card Technical Specifications (1 of 2) Specifications Criteria* Size Length: 10.4 inches (26.42 cm) Height: 11.15 inches (28.32 cm) Width: 1.0 inches (2.54 cm) Approximately 1.4 lbs. (0.64 kg) Weight Approvals Safety Certifications Refer to the equipment’s label for approvals on product. Power The SCM card contains a DC-to-DC converter that requires 48V power input. The 48V power is distributed through the Hotwire chassis backplane.
PAGE 10
Table 3. SCM Card Technical Specifications (2 of 2) Specifications Criteria* OC3 Uplink Specifications Number of ports 1 OC3 Connector Type Fiber SC connectors Standards Supported ANSI T1.105.06-94 Jitter, ANSI T1.105.09 94 Jitter, ANSI T1.117.06-91, ITU-T G.957 7/95 Frame Formats OC3 or STM-1 Operation, Direct Mode only Line Type Non-Return to Zero Data Rates Supported 155.52 Mbps Facility Datalink Protocol ANSI T1.105 Format, ANSI T1.646 HEC, ITU-T I.
PAGE 11
Warranty, Sales, Service, and Training Information Contact your local sales representative, service representative, or distributor directly for any help needed. For additional information concerning warranty, sales, service, repair, installation, documentation, training, distributor locations, or Paradyne worldwide office locations, use one of the following methods: Internet: Visit the Paradyne World Wide Web site at www.paradyne.com. (Be sure to register your warranty at www.paradyne.com/warranty.