Alcatel-Lucent OmniPCX NDDI2-2 Manual de usuario

Alcatel-Lucent OmniPCX Enterprise

Communication Server

NDDI2-2 (LS/GS)

Legal notice:

Alcatel, Lucent, Alcatel-Lucent and the Alcatel-Lucent logo are trademarks of

Alcatel-Lucent. All other trademarks are the property of their respective

owners.

The information presented is subject to change without notice.

Alcatel-Lucent assumes no responsibility for inaccuracies contained herein.

The CE mark indicates that this product conforms to the following Council

Directives:

- 2004/108/EC (concerning electro-magnetic compatibility)

- 2006/95/EC (concerning electrical safety)

- 1999/5/EC (R&TTE)

Chapter 1

Hardware description

 Presentation .............................................................................................1.1

 Environment .............................................................................................1.1

 Functional blocks ...................................................................................1.2

 QLSLAC ........................................................................................................1.3

 Analog interfaces ...........................................................................................1.4

 DSP module ..................................................................................................1.4

 Common part .................................................................................................1.5

 Power supply .................................................................................................1.5

Chapter 2

Hardware configuration

 Reference ..................................................................................................2.1

 Overview ....................................................................................................2.1

 Assembling NDDI2–2 board ...............................................................2.2

 Assembling QATI–2 daughter board ...............................................2.4

 Jumpers on NDDI2–2 and QATI-2 boards .....................................2.5

 NDDI2–2 LED ............................................................................................2.6

 

  

  0-1

Chapter 3

External connections

 Connection ...............................................................................................3.1

 Output pins on NDDI2–2 board .........................................................3.2

Chapter 4

CLIPIA Daugtherboard - Operation

 Overview ....................................................................................................4.1

 CLIP function ...........................................................................................4.1

 Metering function ...................................................................................4.1

Chapter 5

CLIPIA Daughterboard - Configuration

 Reference ..................................................................................................5.1

 Board assembly ......................................................................................5.1

Chapter 6

Ground Start (GS) Daughterboard - Operation

 Overview ....................................................................................................6.1

 Operation ...................................................................................................6.1

 

0-2  

Chapter 7

Metering Detection Daughter Board

 Overview ....................................................................................................7.1

 

  0-3

 

0-4  

1.1 Presentation

The Loop Start / Ground Start (LS/GS) board is also called Non Direct Dialing In (NDDI2-2)

board. It is an analog board which allows the Private Automatic Branch eXchange (PABX) to

be connected to most public networks. Furthermore, this board allows the PABX to be

connected to a pager system according to the ESPA standard.

The NDDI2-2 board can connect up to eight 2-wire analog lines. Lines 1 to 4 are processed on

the mother board and lines 5 to 8 are processed on the QATI-2 daughter board.

The NDDI2-2 board can handle the following optional daughter boards :

- Calling Line Identification Protocol Interface Adaptor (CLIPIA) board:

This board allows the line impedance to be modified to identify the caller and to detect the

metering pulses.

For more information on the CLIPIA board, see NDDI2-2(LS/GS) - CLIPIA Daugtherboard -

Operation .

- Tax Metering board:

This board is used to detect 12/16 KHz metering pulses.

For more information on the Tax Metering board, see NDDI2-2(LS/GS) - Metering

Detection Daughter Board .

- Ground Start board:

This board is used to seize the line via the ground and to detect incoming calls via

grounding a line wire.

Note:

The Ground Start board is only available in the US market.

Each daughter board is dedicated to 4 network lines, i.e. 2 daughter boards are necessary to

handle 8 lines of an NDDI2-2 board.

For more information on the NDDI2-2 board configuration, see NDDI2-2(LS/GS) - Hardware

configuration .

For more information on the NDDI2-2 board connection, see NDDI2-2(LS/GS) - External

connections .

1.2 Environment

The following figure shows the front and back panel connections of the NDDI2-2 board.

___change-begin___



 

      ! "  #$!%$!  &!'()'* 1-1

___change-end___

Figure 1.1: Input/Output diagram - NDDI2–2 (LS/GS) board

1.3 Functional blocks

The NDDI2-2 board is made up of the following functional blocks:

- Quad Low voltage Subscriber Line Audio - processing Circuit (QLSLAC),

- Analog interfaces,

- Digital Signal Processing (DSP) module,

- Common part,

- Power supply.

The following figure shows how the functional blocks of the NDDI2-2 board are organized.

___change-begin___

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1-2       ! "  #$!%$!  &!'()'*

___change-end___

Figure 1.2: Functional block diagram - NDDI2–2 (LS/GS) board

1.3.1 QLSLAC

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A/D and D/A voice signal conversion is ensured by 2 QLSLAC circuits. Each Quad Low

voltage Subscriber Line Audio - processing Circuit (QLSLAC) contains 4 coders-decoders

(CODECS) and supports 4 analog interfaces.

One Time Division Multiplex (TDM) or TS allocation connects both QLSLAC to circuit C1.

The QLSLAC acts as:

- an interface between :

• the Pulse Code Modulation (PCM) bus (Time-Slot Assigner (TSA)) and the processor,

• the SLIC OET/CET management and 4 Signal Processing Channels (SPC),

- the programmable software for transmission features (input impedance, reception and

transmission gains, echo cancellation, µ or A laws coding, etc.).

1.3.2 Analog interfaces

Analog interfaces:

- control the signalling,

- transmit voice,

- receive messages to identify the caller (CLIP), if any.

Interfaces are made up of the following parts:

- protection circuits which consist of:

• overvoltage protection circuits to avoid damage in case of any short circuit,

• EMI filtering circuits to reduce the RFI effects on the telephone line-card.

- impedance for ringing signal:

A firmware command allows a low or high impedance to be connected. This command

allows, with a specific equipment (country dedicated daughter board), either a ringing

impedance or a spark quench circuit to be connected (loop protection circuit during

dialing).

- loop circuits which can be:

• on line loop, a high dynamic impedance circuit with DC current limitation (compatible

with TBR21),

• dialing loop (very low resistance).

- loop current detector.

- polarity detector:

Still used for paging, its use depends on the country for NDDI operation. The polarity can

be detected only if a DC current loop is present.

- interface for AC signalling at hang-up:

The interface allows the AC signalling received during the hang-up phase to be transmitted

from the line to the QLSLAC (to be detected by the DSP). This signaling can be ringing,

dual tone (DT-AS), DTMF, V23 or Bell202 type for line call identification messages (CLIP

function).

1.3.3 DSP module

The Digital Signal Processing (DSP) module has the following functions:

Chapter 1#$!%$!  &!'()'*

1-4       ! "  #$!%$!  &!'()'*

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