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8-GPON Line Termination Board - version C NGLT-C

3FE 67301 AAAA TQZZA Ed 02 Released 1 / 10

1 Identification -2

2 Introduction -2

3 Features and Application Notes -2

4 General Description -3

5 Functional Blocks -5

6 External Interfaces -6

7 Physical Description -7

8 Power Supply -8

9 Hardware Installation -9

NGLT-C 8-GPON Line Termination Board - version C


1 Identification

Table 1 provides identification of the NGLT-C:

Table 1: Identification of the NGLT-C

2 Introduction

This document describes the GPON (Gigabit Passive Optical Network) Line Termination (LT) board with Traffic Manager - version C.

3 Features and Application Notes

The NGLT-C:

Is a line terminating unit for the Intelligent Services Access Manager (ISAM). Can be used in the following subracks:

7302 ISAM FD subrack 7330 ISAM FTTN FD subrack 7360 ISAM FX subrack (CO deployment only)

Provides eight GPON ports per board and supports 2.488 Gbps downstream rate and 1.244 Gbps upstream rate.

With Traffic Manager:The traffic manager provides flexible scheduling and rate limiting on a per class of service, per service and per subscriber basis for downstream PON traffic.

Meets ETSI and ANSI specifications. Is intended for deployment in Central Office (CO) equipment. Can be used in the following operation conditions:

-5C to +45C ambient temperature range, in CO environment with multiple 7302 ISAM subracks or 7360 ISAM FX-16 subracks.

-40C to +65C ambient temperature range, when used in stand-alone 7302 ISAM subracks, 7330 ISAM FTTN subracks, 7360 ISAM FX-16 subracks, 7360 ISAM FX-8 subracks or 7360 ISAM FX-4 subracks.Note: thermal restrictions may apply depending on shelf type, fan type and GPON SFP type used. For more information for the FX equipment, see the 7360 ISAM FX Product Information manual, Table 5-3 ISAM FX 7360 LT Temperature Range Support.

Supports Time of Day (ToD). Can be hot inserted or extracted. Is compliant to the regulations of Reduction of Hazardous Substances (RoHS) and

Waste Electrical and Electronic Equipment (WEEE).

Part Number Mnemonic Name

3FE 67301 AA NGLT-C 8-GPON Line Termination Board with Traffic Manager (TM) - version C



Is compliant to safety standards IEC / EN 60950-1 and AS/NZS 60950-1, provided that it is installed, maintained and used according the relevant installation instructions.

4 General Description

The NGLT-C is a GPON line termination board. This board can be installed in a 7302 ISAM FD subrack, a 7330 ISAM FTTN FD subrack or a 7360 ISAM FX subrack.

The NGLT-C meets ETSI and ANSI requirements and is intended for CO and remote deployment in ISAM Flexible Density (FD) and FX equipment.

The NGLT-C provides termination of eight GPON ports (2.488 Gbps downstream and 1.244 Gbps upstream).

SFP (Small Form Factor Pluggable) GPON optical modules can be plugged in on the NGLT-C board. For an overview of the supported pluggable optical modules, see the Product Information manual of your system.

The NGLT-C generates GPON downstream signals synchronized to a timing reference from one of the two NT slots. All other clocks and synchronization signals are derived from on-board oscillators.

The following figures show the position of the NGLT-C in:

a 7302 ISAM FD subrack; see Figure 1 a 7330 ISAM FTTN FD subrack; see Figure 2 a 7360 ISAM FX subrack (FX-16, FX-8 and FX-4); see Figure 3, 4 and 5.

Fig. 1: Position in a 7302 ISAM FD Subrack

LT 5

LT 6

LT 7

LT 8

LT 1

LT 2

LT 3

LT 4

LT 1

0LT

11

LT 1

2LT

13

NTA

NTI

ON

TBLT

9

LT 1

4LT

15

LT 1

6

CBs, lamps and switches

Fan unit

Connectors



Fig. 2: Position in a 7330 ISAM FTTN FD Subrack

Fig. 3: Position in a 7360 ISAM LT FX-16 Subrack



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

LT 5

LT 6

LT 7

LT 8

LT 1

LT 2

LT 3

LT 4

LT 1

0LT

11

LT 1

2LT

13

NTA

NTI

ON

TBLT

9

LT 1

4LT

15

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

NGFC-E

FAN

LT 8

LT 4

LT 3

LT 2

LT 1

NT A

NT I/O

NT B

NGFC-F

FAN



5 Functional Blocks

Figure 6 shows the functional blocks of the NGLT-C.

Fig. 6: Functional Blocks

The functions can be subdivided into the following major sections:

The data plane is responsible for handling traffic between eight GPON ports and two connections to/from the two NT boards.

The control plane, which is responsible for the management functions of the assembly.

The NGLT-C hardware architecture consists of the following functional blocks:

NT PHYsical interface:The PHY interface enables interconnect of user and management data between the LT and the NT. The PHY supports connection rates of either 1Gb/s, 2.5Gb/s or 10Gb/s depending on the NT board capability.Note: The NGLT-C supports 2 uplinks interfaces that can both be connected to a single NT in a FX shelf.

InterWorking Function (IWF):The IWF terminates the backplane interfaces from the PHY. It processes all packets from the backplane and the GPON interfaces, performing packet manipulation and forwarding. It inserts and extracts control and management traffic from the NT and PON/ONT for processing by the OBCM. It also collects statistics such as packet, byte, and error counts.

PHY1GE/2.5GE/10GE IWF GIM

... 8 GPON

DATA PLANE

CMMOBCM Ctl I/O

Ctl packets

CONTROL PLANE

PRWM CLKMBAT

POWER AND CLOCK

NTR

TM



GPON Interface Module (GIM):The GPON provides GPON MAC/PHY functions and includes the optical interfaces.

On-Board Control Module (OBCM):The OBCM is the core module of the control plane. It acts as the general CPU for the LT. The OBCM also handles processing of control packets for IGMP and similar features.

Traffic Management (TM):The TM provides traffic management functions.

Control and Management Module (CMM):The CMM contains various control, logic, and interface support functions for the OBCM. Examples include reset control, interrupt handling, device addressing, RSSI logic, and various board monitoring functions.

PoWeR Module (PWRM):The PRWM converts and distributes power on the NGLT-C.

ClocK (CLKM) Module:The CLKM generates all system clocks required by the components and interfaces on the board using clock buffers, PLLs and oscillators.

6 External Interfaces

The NGLT-C has the following external interfaces:

GPON Interface:The NGLT-C downlink interface is a GPON optical interface which supports2.488 Gbps downstream and 1.244 Gbps upstream.

Two 10GE SerDes interfaces:The SerDes interface can auto-negotiate to 1GE, 2.5 GE and 10GE. Those two interfaces work in active/standby mode or in active/active (load-sharing) mode and line up with the NT status.

In simplex configuration, both interfaces can be connected to the same NT board In duplex configuration, one interface connects to NTA and the other interface connects

to NTB (only when deployed in an FX shelf). PSU Interface:

Power Supply interface.



7 Physical Description

ViewFigure 7 shows a view of the NGLT-C.

Fig. 7: View of the NGLT-C

Dimensions:The dimensions of the NGLT-C are:

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



Status LEDSFigure 8 shows the LEDS on the front of the NGLT-C.

Fig. 8: LEDS on the NGLT-C

Table 2 gives the LED descriptions.

Table 2: LEDs

Notes(1) These LEDs are located on the left of the corresponding PON interface

8 Power Supply

The NGLT-C is compatible with -48 Vdc nominal and -60 Vdc nominal power supply systems.

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

LED Description Display Status

PWR This LED indicates that normal power is being provided to the board.

OFF Power off

Blinking (Green)

InitializationPower on state

ALM This LED indicates that the board has a local hardware failure present.

ON (Red) Alarm is present on board

OFF No alarm is present on board

PON LED(1) This LED indicates the state of the PON.

OFF The PON is not active. It is safe to remove the fiber and SFP.

ON (Yellow) The PON is provisioned and one of the provisioned ONU ranges.

ON (Green) The PON is active without errors

Blinking (Green)

The PON is provisioned and is active without errors

ON (Red) The transmitter has failed or there is no communication to the SFP module

PWR

ALM



9 Hardware Installation

For the hardware installation procedures, see the Hardware Installation Manual of your system:

7302 ISAM FD Hardware Installation Manual 7330 ISAM FTTN FD Hardware Installation Manual 7360 ISAM FX Hardware Installation Manual

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