ADTRAN SLC-5 NULL ISDN 2B1 Owner's manual

Brand: ADTRAN

Model: SLC-5 NULL ISDN 2B1

Type: Owner's manual

Page 1

Section 61200102L1-2, Issue 3

Section 61200102L1-2

Issue 3, May 1995

CLEI Code # 5SC3DD0 _ _ _PRACTICES

61200.102L1-2C

SLC-5 NULL

ISDN 2B1Q INTERFACE

DESCRIPTION

Figure 1. ADTRAN SLC-5 NULL Card

Unit

Part No.

Features

Table A. Basic Features

Accompanies SLC-5 U-BR1TE in

2B+D operation.

FAIL LED indicates proper

activation.

Allows non-ISDN ready SLC-5

configurations to use SLC-5

ISDN U-BR1TE.

Provides a four signal serial

communication interface to the

SLC-5 bank controller.

1200102L1

SLC-5

NULL

The NULL card occupies the adjacent physical

slot of a SLC-5 U-BR1TE (unless already occupied by

a SLC-5 U-BR1TE) that is provisioned for NULL 2B+D.

Consequently, only one NULL card is required per tri-

slot group. Three time slots are required for transport

of 2B+D information.

1. GENERAL

1.1 This practice provides an overall description

of the ADTRAN SLC

-5 NULL card. Figure 1 is a

photograph of the NULL card. Part numbers and basic

features for the NULL are provided in Table A.

1.2 Issue 2 of this practice revised subsections

1.3, 1.4, and Table C. Issue 3 adds the CLEI code.

1.3 The SLC-5 NULL card is designed to operate

with AT&T SLC Series 5 equipment. The ADTRAN

SLC-5 U-BR1TE is given access to the two time slots

associated with its physical position in the bank; see

ADTRAN SLC-5 U-BR1TE practices, Sections

61100040L1-5 and 61100040L1-2, for more

information.

SLC is a registered trademark of AT&T.

CONTENTS

1. GENERAL ......................................................................... 1

2. PHYSICAL DESCRIPTION ............................................. 2

3. DESIGN DESCRIPTION .................................................. 2

4. INTERFACE REQUIREMENTS ..................................... 2

5. TESTING ........................................................................... 3

6. SPECIFICATIONS ............................................................ 3

7. REFERENCES................................................................... 3

FIGURES

Figure 1. ADTRAN SLC-5 NULL Card.................................. 1

Figure 2. ADTRAN SLC-5 NULL Card Installation

Examples................................................................... 2

Figure 3. SLC-5 NULL Card Faceplate ................................... 2

Figure 4. SLC-5 NULL Card Block Diagram.......................... 3

TABLES

Table A. Basic Features ............................................................ 1

Table B. ISDN Equipped Banks versus NULL Card

Requirements ............................................................. 2

Table C. NULL Card Specifications ....................................... 3

Page 2

Section 61200102L1-2, Issue 3

1.4 The ADTRAN SLC-5 NULL Card is a line card

for use in AT&T SLC Series 5 central office terminals

(COTs) or in SLC Series 5 remote terminals (RTs) that

are not ISDN ready (see Table B). The NULL card is

only required when an ADTRAN SLC-5 U-BR1TE is

provisioned as NULL 2B+D. The NULL card must then

occupy the adjacent physical slot unless occupied by

another SLC-5 U-BR1TE.

Table B. ISDN Equipped Banks versus

NULL Card Requirements

Location

COT

Any

BCU

MC97724A1

MC97724A1B

MC97755A12

MC97755A1BI1:1

MC97771A1

MC97776A1

MC97776A1BI1:1

Any previous not listed

NULL Card

Requirement

Yes

S1-1

Setting

Off

2. PHYSICAL DESCRIPTION

2.1 The SLC-5 NULL card plugs into a single SLC-

5 channel slot. Figure 2 shows placement examples

for the ADTRAN SLC-5 NULL card.

2.2 Figure 3 is an illustration of the ADTRAN SLC-

5 NULL card faceplate. There is one LED on the

front panel of the ADTRAN SLC-5 NULL card. The

FAIL LED indicates the status of the allocation of

additional time slots to the NULL card by the BCU.

The FAIL LED remains

until the BCU allocates

the additional time slots. The FAIL LED turns

Off

when

the additional time slots have been allocated.

123456789101112

1/2

Physical slot

Time slot

3/4 5/6 7/8 9/10 11/12 13/14 15/16 17/18 19/20 21/22 23/24

SLC-5

U-BR1TE

2B+D

SLC-5

U-BR1TE

2B+D

NULL

SLC-5

U-BR1TE

2B+D

SLC-5

U-BR1TE

2B+D

NULL

SLC-5

U-BR1TE

2B+D

NULL

EMPTY

OTHER

SERVICE

SLC-5

U-BR1TE

1B+D

SLC-5

U-BR1TE

1B+D

EMPTY

OTHER

SERVICE

Figure 2. ADTRAN SLC-5 NULL Card Installation Examples

NULL

FAIL

1200102L1

Figure 3. SLC-5 NULL Card Faceplate

3. DESIGN DESCRIPTION

The SLC-5 Null Card provides a four signal

serial communication interface to the SLC series 5

BCU. Through this interface, the unit informs the BCU

that the SLC-5 NULL card is a plain old telephone

service (POTS) card requesting the time slots

allocated to the physical location to which it is plugged

in.

4. INTERFACE REQUIREMENTS

The ADTRAN SLC-5 NULL card design

interfaces with the SLC-5 bank controller as illustrated

in Figure 4.

Page 3

Section 61200102L1-2, Issue 3

901 Explorer Boulevard • Huntsville, Alabama • 35806-2807 • (205) 971-8000 • FAX (205) 971-8699

Processor

Bank

Controller

I/F

SLC-5

Bank

Controller

Unit

(BCU)

Address/Data

Bus

MSG

NMQ

NMP

Backplane

Connector

NSR

Figure 4. SLC-5 NULL Card Block Diagram

5. TESTING

The ADTRAN SLC-5 NULL card requires no

testing. The FAIL LED located on the front panel of

the NULL card indicates the operational status of the

unit (see subsection 2.2).

6. SPECIFICATIONS

6.1 The specifications for the SLC-5 NULL card

are listed in Table C.

7. REFERENCES

7.1 For more SLC-5 NULL card information, refer

to ADTRAN SLC-5 NULL Installation/Maintenance

Practice, Section 61200102L1-5, ADTRAN Schematic

2200.102-1, and ADTRAN faceplate drawing number

3260.1530.

Table C. NULL Card Specifications

Facility Interface

Interfaces only with the SLC-5 channel bank controller

Faceplate Controls and Indicators

Controls: None

Indicators: FAIL LED to display proper operation

Tests: None

Mechanical

Size: 10.69" Long, 3.75" High, 0.65" Wide

Weight: 4.5 oz, nominal

Mounting: Mounts in AT&T SLC Series 5

channel banks

Power

Current Drain On-card dissipation

+5V 23

Environmental

Temperature: Operating: -40°C to +70°C

Storage: -40°C to +85°C

Relative Humidity: Up to 95% non-condensing

ADTRAN SLC-5 NULL ISDN 2B1 Owner's manual

ADTRAN SLC-5 NULL ISDN 2B1 Owner's manual

ADTRAN SLC-5 NULL ISDN 2B1 Owner's manual

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