isam unit data sheet nelt-bdownload.vianet.com.np/others/temp/nokia/nokia guide...• a 7360 isam fx...

Nokia — Proprietary and confidential

ISAM Unit Data Sheet

NELT-B

3FE 62543 AAAA TQZZA

Issue: 06

December 2016

NELT-B

2

NELT-B

3FE 62543 AAAA TQZZA Issue: 06

Nokia is a registered trademark of Nokia Corporation. Other products and company names mentioned herein may be trademarks or tradenames of their respective owners.

The information presented is subject to change without notice. No responsibility is assumed for inaccuracies contained herein.

© 2016 Nokia.

Contains proprietary/trade secret information which is the property of Nokia and must not be made available to, or copied or used by anyone outside Nokia without its written authorization. Not to be used or disclosed except in accordance with applicable agreements.

NELT-B Ethernet Line Termination Unit version B

Issue: 06 3FE 62543 AAAA TQZZA 3

1 Ethernet Line Termination Unit version B

1.1 Identification

1.2 Introduction

1.3 Features and Application Notes

1.4 General Description

1.5 Functional Blocks

1.6 External Interfaces

1.7 Physical Description

1.8 Power Supply

1.9 Installation in Subrack

1.1 Identification

Table 1 provides identification of the NELT-B:

Table 1 Unit Identification

1.2 Introduction

This document describes the Ethernet Line Termination (LT) unit version B which is used in the Intelligent Services Access Manager (ISAM).

Part Number Mnemonic Name

3FE 62543 AA NELT-B Ethernet Line Termination (LT) unit - version B

Note — See the ISAM Glossary document included in the documentation set of this release for expansion and elaboration of all acronyms and mnemonics used in this document.

Ethernet Line Termination Unit version B

4

NELT-B


1.3 Features and Application Notes

The NELT-B:

• Can be used in the following subracks:• a 7302 ISAM subrack• a 7330 ISAM Fiber To The Node (FTTN) subrack• a 7356 ISAM Fiber To The Building (FTTB) Shelf-Based Remote Expansion Module

(SB-REM).• a 7360 ISAM FX subrack

• Supports the following Small Form Pluggables (SFP):• Standard FE SFP (up to 18 channels)• Standard GE SFP (up to 18 channels)• Compact FE CSFP (2 channels per cage, up to 36 channels)• Compact GE CSFP (2 channels per cage, up to 36 channels)

• Supports downstream Synchronous Ethernet. The Network Timing Reference (NTR) is derived from the NT board.

• Can be used in the following operation conditions:• -5°C to +45°C ambient temperature range, in CO environment with multiple 7302

ISAM FD subracks and 7360 ISAM FX-16 subracks• -40°C to +65°C ambient temperature range, when used in single 7302 ISAM FD

subracks and 7360 ISAM FX-16 subracks• -40°C to +65°C ambient temperature range, when used in stand-alone 7330 ISAM

FTTN FD subracks, 7360 ISAM FX-8 subracks and 7360 ISAM FX-4 subracks• -40°C to +70°C ambient temperature range, when used in stand-alone 7356 ISAM

FTTB SB-REM (limited to 18 FE/GE per NELT-B LT)• Can be hot inserted or extracted.• Is compliant to the regulations of Reduction of Hazardous Substances (RoHS)

and Waste Electrical and Electronic Equipment (WEEE).• Is compliant to safety standards IEC / EN 60950-1 and AS/NZS 60950-1, provided

that the board is installed, maintained and used according the relevant installation instructions.

1.4 General Description

The NELT-B is a Fast Ethernet (FE)/Gigabit Ethernet (GE) line termination board which has up to 36 FE/GE optical ports for Ethernet Access.

The NELT-B meets ETSI requirements and is intended for CO and remote deployment in ISAM equipment.

The following figures show the position of the NELT-B in:

• a 7302 ISAM FD subrack (CO deployment); see Figure 1.• a 7330 ISAM FTTN FD subrack (CO or remote deployment); see Figure 2.



• a 7356 ISAM FTTB SB-REM (remote deployment); see Figure 3.• a 7360 ISAM FX subrack (FX-16, FX-12, FX-8, FX-4) see Figures 4, 5, 6 and 7.

Figure 1 Position in a 7302 ISAM FD Subrack

Figure 2 Position in a 7330 ISAM FTTN FD Subrack

Figure 3 Position in a 7356 ISAM FTTB SB-REM

LT 5

LT 6

LT 7

LT 8

LT 1

LT 2

LT 3

LT 4

LT 1

0

LT 1

1

LT 1

2

LT 1

3

NT

A

NT

IO

NT

B

LT 9

LT 1

4

LT 1

5

LT 1

6

CBs, lamps and switches

Fan unit

Connectors

LT 7

LT 6

LT 5

LT 4

LT 3

LT 2

LT 1

NT A

NT I/O

NT B

EMA-GFC

FAN

LT 8

Dummy or Splitter board

LT 2

LT 1

Controller board or NT board

FAN


6

NELT-B


Figure 4 Position in a 7360 ISAM FX-16 Subrack


LT 5

LT 6

LT 7

LT 8

LT 1

LT 2

LT 3

LT 4

LT 1

0

LT 1

1

LT 1

2

LT 1

3

NT

A

NT

IO

NT

B

LT 9

LT 1

4

LT 1

5

LT 1

6

CBs, lamps and switches

Fan unit

Connectors

NTB

NTIONTA

GFC

Fan unit

LT12

LT11

LT10

LT9

LT8

LT7

LT6

LT5

LT4

LT3

LT2

LT1





1.5 Functional Blocks

The functional blocks of the NELT-B hardware architecture are shown in Figure 8.

Figure 8 NELT-B functional Blocks

LT 7

LT 6

LT 5

LT 4

LT 3

LT 2

LT 1

NT A

NT I/O

NT B

GFC

FAN

LT 8

LT 4

LT 3

LT 2

LT 1

NT A

NT I/O

NT B

GFC

FAN

PCle

PCle

SERDES

PCIe-PCIeSwitch

IWF

Switch

Switch

9-CSFP

9-CSFP

10GE 2.5GE

2.5GE/10GE

2.5GE/10GE

2.5GE

2.5GEPCIe

18 x GE

18 x GE

18 x GE

18 x GE

PWRM-48V

Towardsbackplane

1GE/2.5GE/10GE


8

NELT-B


The NELT-B hardware architecture consists of the following functional blocks:

• The IWF block is responsible for:• the data path for the Ethernet subscriber interfaces requiring similar features as for

DSL subscriber interfaces• the control path for the Ethernet subscriber traffic• the management of the LT board.

• The switch block is for the data switch between the NT board and the subscriber lines.

• The power block provides all the power for the NELT-B board.

1.6 External Interfaces

The NELT-B has the following interfaces:

• Ethernet interfaces• SerDes interfaces• PSU interface

1.6.1 Ethernet InterfacesThe NELT-B can be configured to support the following SPFs:

• Standard FE SFP (up to 18 channels)• Standard GE SFP (up to 18 channels)• Compact FE CSFP (2 channels per cage, up to 36 channels)• Compact GE CSFP (2 channels per cage, up to 36 channels)

1.6.2 SerDes InterfacesThe NELT-B has two 10G SerDes interfaces.

The SerDes interface can auto-negotiate to 1GE, 2.5 GE and 10GE. One interface connects to NT A and the other interface connects to NT B.

Those two interfaces work in active/standby mode or in active/active (load-sharing) mode and line up with the NT status. The actual behavior depends on the NT board type, see Table 2.



Table 2 NELT-B Behavior in function of the NT Board

Each of the interfaces can be a NNI (Network-to-Network Interface), a UNI (User-to-Network Interface) or a HC-UNI (High Capacity UNI) port. See Figure 9 for the logical view of the NELT-B architecture while Table 3 lists the specifics for each of the interface types

Figure 9 NELT-B Architecture

Table 3 Interface types and their characteristics

So the backplane capacity is dependent on the NT type and the interface type, i.e f(NT, interface) and consequently, the following backplane capacity is supported by the NELT-B:

NT Board Type Behavior Description

NANT-A Active/Standby (A/S) A single NT-LT link is active

NANT-D

NANT-E

FANT-F

Active/Active (A/A) or load-sharing

Both NT-LT links are simultaneously active allowing to double the capacity

NANT-A 2 x 1G (active/standby) NANT-D 2 x 2.5G (active/active) NANT-E/FANT -F 2 x 10G (active/active)

36 FE/GE

Traffic flows : • UNI • HC-UNI (� data, … control) • NNI

Ethernet switch

IWF (2.5 Gb/s bi-dir)

UNI HC-UNI NNI

Application Low end residential

Small business

High end residential

Business

Mobile backhaul

Pre-aggregation

Large business

Traffic Management

Ethernet switch as L2 concentrator

IWF : forwarding co-processor

Ethernet switch as L2 forwarder

IWF : control plane co-processor

HW assist for high-speed packet inspection

Ethernet switch as L2 forwarder

Feature set DSL LT like DSL LT like NT like

Aggregate rate 2.5G bi-dir 2x10G bi-dir, wire speed 2x10G bi-dir, wire speed


10

NELT-B


Table 4 NELT-B Backplane Capacity

Notes(1) A restriction exists when considering UNI interfaces, i.e. for all the UNI interfaces taken together, the aggregate

capacity is limited to 2.5G by the IWF even if carried over a backplane interface with a higher rate. If the backplane is smaller (NANT-A), the rate is obviously limited to 1G.

Example with two NANT-E boards:

• For 36 NNI ports, the backplane capacity is 20G• For 36 UNI ports, the capacity for the aggregate is 2.5G (carried over a 20G

backplane)• For 36 ports mix of NNI and UNI: capacity is 20G for the NNI and HC-UNI ports

but maximum 2.5G for the UNI ports

1.6.3 PSU InterfaceThis is the Power Supply interface.

1.7 Physical Description

1.7.1 ViewFigure 10 shows the front view of the NELT-B:

UNI HC_UNI NNI

NT Board Type Simplex Duplex Simplex Duplex Simplex Duplex

NANT-A 1G 1G 1G 1G 1G 1G

NANT-D 2.5G(1) 2.5G(1) 2.5G 5G 2.5G 5G

NANT-E

FANT-F

10G 20G 10G 20G



Figure 10 Front View of the NELT-B

1.7.2 SFP SequenceFigure 11 shows the SFP sequence on the NELT-B for the possible configurations.


12

NELT-B


Figure 11 SFP Sequence

1.7.3 Dimensions:The dimensions of the NELT-B are:

• Height: 405 mm• Width: 225 mm (top) / 205 mm (bottom)• Board to board pitch: 25 mm

1.7.4 Status LEDS

POW

ER F

ILTE

R FO

R SF

P

FEFE

FEFE

FEFE

FEFE

FEFE

FEFE

FEFE

FEFE

FEFE

FEFE

FEFE

FEFE

FEFE

FEFE

FEFE

FEFE

FEFE

FEFE

18 FE CSFP(2 channels per CSFP)

POW

ER F

ILTE

R FO

R SF

P

FE

FE

FE

FE

FE

FE

FE

FE

FE

FE

FE

FE

FE

FE

FE

FE

FE

FE

18 FE SFP(1 channel per SFP)

POW

ER F

ILTE

R FO

R SF

P

GEGE

GEGE

GEGE

GEGE

GEGE

GEGE

GEGE

GEGE

GEGE

18 GE CSFP(2 channels per CSFP)

GEGE

GEGE

GEGE

GEGE

GEGE

GEGE

GEGE

GEGE

GEGE

POW

ER F

ILTE

R FO

R SF

P

GE

GE

GE

GE

GE

GE

GE

GE

GE

GE

GE

GE

GE

GE

GE

GE

GE

GE

18 GE SFP(1 channel per SFP)



1.7.4.1 Board LEDs on the NELT-BFigure 12 shows the board LEDS on the front of the NELT-B.

Figure 12 Board LEDS on the NELT-B

Table 5 gives the LED definitions.

Table 5 LED Definition for the NELT-B

1.7.4.2 Link LEDs on the SFPFor each SFP port, a status LED is provided on the frontpanel of the NELT-B, see Figure 13.

Figure 13 LEDS for SFP Ports

Table 6 gives the behavior of the LEDs for the SFP ports.

LED Color Description

ALM Red Alert

A/S Green Active/Standby

PWR Green On lineP

WR

ALM

A/S

1

2

3

4

5

6

7

8

StatusLED


14

NELT-B


Table 6 Behavior of LEDs for SFP Ports

1.8 Power Supply

The NELT-B is compatible with -48Vdc and -60Vdc nominal power supply systems.

Note: Country dependent tolerances exist regarding the nominal battery voltage values

1.9 Installation in Subrack

Refer to the 7302 ISAM FD Hardware Installation Manual, the 7330 ISAM FTTN FD Hardware Installation Manual, the 7356 ISAM FTTB User, Safety and Installation Manual or the 7360 ISAM FX Hardware Installation Manual for a description of the mounting procedures.

Situation Status LED

Board reset Off

Link administrative down Off

Link administrative up and Loss Of signal (LOS) Off

Link administrative up and Signal detected On

Link is OK and carrying traffic Blinking

Customer document and product support

Customer documentationCustomer Documentation Welcome Page

Technical SupportCustomer Documentation Technical Support

Documentation feedbackCustomer Documentation Feedback

https://infoproducts.alcatel-lucent.com/cgi-bin/doc_welc.pl

http://support.alcatel-lucent.com

mailto:[email protected]

isam unit data sheet nelt-bdownload.vianet.com.np/others/temp/nokia/nokia guide...• a 7360 isam fx...

Documents