FGLT-B
ISAM Unit Data Sheet
FGLT-B
3FE-68954-ABAA-TQZZA
Issue: 05
June 2017
Nokia — Proprietary and confidential
Use pursuant to applicable agreements
FGLT-B
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© 2016-2017 Nokia.
Contains proprietary/trade secret information which is the property of Nokia and must
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applicable agreements.
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FGLT-B 16 ports GPON Line Termination Board
1 16 ports GPON Line Termination
Board
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 Hardware installation
1.1 Identification
Table 1 provides identification of the FGLT-B:
Table 1 Identification
Part number Mnemonic Description
3FE 68954 AB FGLT-B 16 ports GPON Line Termination Board with Traffic Manager -
version B
1.2 Introduction
This document describes the 16 ports Gigabit Passive Optical Network (GPON) Line
Termination (LT) board with Traffic Manager (TM)- 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.
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16 ports GPON Line Termination Board FGLT-B
1.3 Features and application notes
The FGLT-B:
• Is a line terminating unit for the Intelligent Services Access Manager (ISAM).
• Can be used in the 7302 ISAM, 7330 ISAM FTTN (ETSI) and 7360 ISAM FX
subracks.
• Provides 16 GPON ports per board and supports:
• an aggregate downstream rate of 40 Gbps (16 x 2.488 Gbps) and
• an aggregate upstream rate of 20 Gbps (16 x 1.244 Gbps)
• Contains a Traffic Manager function that provides flexible scheduling and rate
limiting on a per ONT, per UNI and per class of service basis for downstream PON
traffic.
• Meets ANSI and ETSI/MII specifications.
• Can be used in Central Office (CO) and remote deployments in ISAM FD or FX
equipment.
Note — Specific restrictions might apply for specific shelf
types, fan types or SFP types.
See the relevant Product Information manuals (Table about LT
Temperature Range Support) for more details.
• Supports Time of Day (ToD)
• Can be hot inserted or extracted.
• Is compliant to the regulations of Restriction of the use of certain 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 it is installed, maintained and used according the relevant installation
instructions.
1.4 General description
The FGLT-B is a GPON line termination board. This board can be installed in a 7302
ISAM, 7330 ISAM FTTN (ETSI) or 7360 ISAM FX subrack.
The FGLT-B meets ETSI and MII requirements and can be used in CO and remote
deployments.
The FGLT-B provides termination of 16 GPON ports (40 Gbps downstream and
20 Gbps upstream).
SFP (Small Form Factor Pluggable) GPON optical modules can be plugged in on the
FGLT-B board. For an overview of the supported pluggable optical modules, see the
Product Information manual of your system.
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FGLT-B 16 ports GPON Line Termination Board
The FGLT-B 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 FGLT-B in:
• a 7302 ISAM subrack; see Figure 1.
• a 7330 ISAM FTTN (ETSI) subrack; see Figure 2.
• a 7360 ISAM FX-16 subrack; see Figure 3.
• a 7360 ISAM FX-8 subrack; see Figure 4.
• a 7360 ISAM FX-4 subrack; see Figure 5.
Figure 1 Position in a 7302 ISAM Subrack
LT 10
LT 11
LT 12
LT 13
LT 14
LT 15
LT 16
NTIO
LT 1
LT 2
LT 3
LT 4
LT 5
LT 6
LT 7
LT 8
NTA
NTB
LT 9
CBs, lamps and switches
Fan unit
Connectors
Figure 2 Position in a 7330 ISAM FTTN Subrack
LT 8
LT 7
LT 6
LT 5
LT 4
LT 3
LT 2 FAN
LT 1
NT B
NT I/O
NT A
EMA-GFC
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16 ports GPON Line Termination Board FGLT-B
Figure 3 Position in a 7360 ISAM FX-16 Subrack
LT 10
LT 11
LT 12
LT 13
LT 14
LT 15
LT 16
NTIO
LT 1
LT 2
LT 3
LT 4
LT 5
LT 6
LT 7
LT 8
NTA
NTB
LT 9
CBs, lamps and switches
Fan unit
Connectors
Figure 4 Position in a 7360 ISAM FX-8 Subrack
LT 8
LT 7
LT 6
LT 5
LT 4
LT 3
LT 2 FAN
LT 1
NT B
NT I/O
NT A
NGFC-E
Figure 5 Position in a 7360 ISAM FX-4 Subrack
LT 4
LT 3
LT 2
LT 1
FAN
NT B
NT I/O
NT A
NGFC-F
1.5 Functional blocks
Figure 6 shows the functional blocks of the FGLT-B.
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FGLT-B 16 ports GPON Line Termination Board
Figure 6 Functional blocks
DATA PLANE
IWF
Packet
...
10GE PHY TM GIM 16 GPON
Processor
Ctrl packets
OBCM CMM Ctl I/O
CONTROL PLANE
BAT
PRWM CLKM NTR
POWER AND CLOCK
The functions can be subdivided into the following major sections:
• The data plane is responsible for handling traffic between 16 GPON ports and up
to four connections to/from the two NT boards (depending on the shelf and the NT
board).
• The control plane, which is responsible for the management functions of the
assembly.
The FGLT-B hardware architecture consists of the following functional blocks:
• InterWorking Function (IWF):
• The PHY part of the IWF terminates the backplane interfaces. It supports four
connections per NT at 10Gb/s rate. This allows to support connection rates between
NT and LT of 10Gb/s, 20Gb/s or 40Gb/s depending on the NT/shelf board
capabilities and the configured max_lt_link_speed.
• The Packet Processor of the IWF performs packet parsing, classification, editing 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.
• The Traffic Manager (TM) is responsible for queuing and scheduling of traffic.
• GPON Interface Module (GIM):
The GPON provides GPON MAC/PHY functions and includes the optical
interfaces.
• On-Board Control Module (OBCM):
The OBCM acts as the general CPU for managing the components of the LT. The
OBCM also processes control packets.
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16 ports GPON Line Termination Board FGLT-B
• 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 FGLT-B.
• ClocK (CLKM) Module:
The CLKM generates all system clocks required by the components and
interfaces on the board using clock buffers, PLLs and oscillators.
1.6 External interfaces
The FGLT-B has the following external interfaces:
• GPON Interface:
The FGLT-B downlink interface is a GPON optical interface which supports
2.488 Gbps downstream and 1.244 Gbps upstream.
• Backplane interfaces:
The backplane interfaces consist of two groups of four SerDes interfaces; one
group per NT. Each SerDes interface can auto-negotiate to 10GE. When running
at 10GE it is possible to combine multiple interfaces into a Link Aggregation
Group resulting in a backplane capacity of 10Gbps, 20Gbps or 40Gbps.
Restrictions might apply depending on shelf type, NT redundancy status and
configured max_lt_link_speed.
• PSU Interface:
Power Supply interface.
1.7 Physical description
1.7.1 View
Figure 7 shows a view of the FGLT-B.
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Figure 7 View of the FGLT-B
1.7.2 Dimensions:
The dimensions of the FGLT-B are:
• height: 405 mm
• width: 225 mm (top) / 205 mm (bottom)
• board to board pitch: 25 mm
The weight of the board is 1.1 kg.
1.7.3 Status LEDS
Figure 8 shows the LEDS on the top of the front of the FGLT-B.
Figure 8 LEDS on the FGLT-B
PWR
ALM
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16 ports GPON Line Termination Board FGLT-B
Additionally there is one LED per PON port worked in into the side of the SFP socket
of each port. Table 2 gives the LED states for all 18 LEDs.
Table 2 LED states
LED Description Display Status
PWR This LED indicates that OFF Power off
normal power is being
provided to the board. Blinking (Green) Initialization
Power on state
ALM This LED indicates that the ON (Red) Alarm is present on board
board has a local hardware
failure present. OFF No alarm is present on board
PON LED(1) This LED indicates the OFF The PON is not active. It is safe to remove
state of the PON. the fiber and the SFP module.
ON (Yellow) The PON is provisioned and one of the
provisioned ONU ranges.
ON (Green) The PON is active without errors
ON (Red) The transmitter has failed or there is no
communication to the SFP module
Notes
(1) These LEDs are located on the left of the corresponding PON interface
1.8 Power supply
The FGLT-B is compatible with -48 Vdc nominal and -60 Vdc nominal power supply
systems.
Note: Country dependent tolerances exist regarding the nominal battery voltage
values.
1.9 Hardware installation
For the hardware installation procedures, see the relevant Hardware Installation
Manual.
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