3 Features and Ap Applica licattion No Notes 4 General De Description
-3
5 Functional Description 6 External In Interfaces
-6
7 Alarm Control Unit
-7
8 Physical Description 9 Craft Cable Connector 10 Power Su Supply
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NANT-A 1
Combined NT Unit version A
Identification Table 1 provides identification of the NANT-A Table 1: Identification of the NANT-A
2
Part Number
Mnemonic
Name
3FE 26698 AAAA
NANT-A
Combined NT Unit version A
Introduction This document describes the Combined NT Unit version A (NANT-A) which is part of the Intelligent Services Access Manager (7302 ISAM).
3
Features and Application Notes The NANT-A:
• • • • • •
Is used in a Flexible Density (FD) 7302 ISAM and a 7330 FD subrack. Provides the management and control interfaces. Provides centralized alarm handling and reporting. Has one fixed 1000BASE-X port (SFP only) and one 1000BASE-X combo port (SFP or RJ45). Supports fiber bending. Supports:
• the LT boards in a 7302 FD subrack • a combination of LT boards and REM/SEM units in a 7330 FD subrack. • • • • •
Supports up to 16 K MAC address entries with hardware assisted aging. Supports NT redundancy from 7302 ISAM R3.2 onwards. Supports NT I/O. Supports back pressure at half duplex and IEEE802.3x flow control at full duplex. Operates within the temperature range of -40 °C to +65 °C.
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Combined NT Unit version A 4
NANT-A
General Description The NANT-A contains the control functions of the ISAM 7302 FD and 7330 FD. It handles the xDSL, the chassis and the switching data path. The NANT-A provides management interfaces (LCMI and LEMI) to the outside world and control interfaces towards other subsystems (LT board, NT I/O board). Figure 1 shows the position of the NANT-A in the system. Fig. 1: Position of the NANT-A in the system Alarm interfaces
Management-A interface
LT #1
AC U
LT #2 NT-A (PBA-NANT-A) k r o s w e t e c a f N / r k t e n n i l I p U
s e ) c L f r S e t D n i x r e N s ( U
NTIO
NT-B (PBA-NANT-A)
LT #15 LT #16
Management-B interface
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NANT-A 5
Combined NT Unit version A
Functional Description Figure 2 shows the different functional blocks of the NANT-A. Fig. 2: Functional Blocks of the NANT-A AAAA
FIM
PBA-NANT-A MCSD
NT's Alarm-Cut-Off LEDs Alarm-Cut-Off Switch
[ACOLED] [ACOS]
ACU
BIM [REFOUT]
SYNC-REFerence Output Clock [LT-Ref-Clock(0:17)]
[ALMOUT]
ALarM control OUTputs
[ALMIN]
ALarM status INputs
[HIPC]
NT-NT Communication Itf NT-NT Switch-Over Itf NT's Shelf Activity Status NT's Serial IO Itf NT's Backplane (NTIO) Serial Mgt Itf
NT's Front SYStem LEDs
[SYSLED]
NT's Front Uplink-ITF LEDs
[ITFLED]
Local Craft-Management Itf Local Ethernet-Management Itf
NT's Back-Uplink Interface 3 NT's Back-Uplink Itf 4 or LT's Serdes Itf 17 NT's Back-Uplink Itf 5 or LT's Serdes Itf 16 SMAS-Powering Interface NTIO/NTAP-Powering Interface NT's Power Supply Interface
PSIM
The different functional blocks are:
•
MCSD
The Master Clock-Synchronization and -Distribution (MSCD) provides a HW-stuffable interface and synchronization circuitry (Generic Equipment Timing Source (GETS)) to lock the ISAM system clock onto a very accurate received BITS reference timing signal. This ISAM system clock reference will be forwarded to all LT boards within the same ISAM subrack.
•
ACU
The Alarm Control Unit (ACU) provides all the necessary alarm control and interface circuitry for accumulating system alarms, driving relay contacts for alarm outputs and provisioning visual alarm indications.
•
CISC
The Centralized ISAM System Controller (CISC) provides all the On-Board Controller (OBC) functions:
• centralized control and management approach • processing capabilities for dropped GE packets/frames from the GE switching module.
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Combined NT Unit version A •
NANT-A
NUTS
The Network/User Transport and Switching (NUTS) provides the interface and switching circuitry for the front and back related uplink/network interfaces to/from the LT slots.
•
PSIM
The Power Supply Interface Module (PSIM) converts the rack power supply into all necessary voltages as required by the used components.
•
FIM
The Frontplate Interface Module (FIM) at the front stiffener holds some physical interface connectors, a button and some LEDs.
•
BIM
The Backplane Interface Module (BIM) constitutes all the necessary control, management, and data plane related interfaces.
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NANT-A 6
Combined NT Unit version A
External Interfaces
External Interfaces Accessible via Front Panel The following external interfaces are accessible via the front panel: Communication Interfaces
2 communication interfaces are available via the front panel:
• 1 x 1000 BASE-X SFP port • 1 x Combo-Port: • 1 x 1000 BASE-X SFP-Port or
• 1 x 10/100/1000 BASE-T Port (RJ45 connector) Management Interfaces
The following management interfaces are available via the front panel:
• Local Craft Management Interface (LCMI, RJ45 connector) • Local Ethernet Management Interface (LEMI, RJ45 connector) • An Alarm Cut-Off Switch (ACOS) and LED (ACOLED) The electrical UPLINK interface can also be used as Inband Ethernet Management interface.
External Interfaces Accessible via the Back Plane The following external interfaces are accessible via the back plane:
• • • • • • • • • • • • •
ALarM control OUTputs (ALMOUT) ALarM status INputs (ALMIN) Syncronization REFerence OUTput clocks (REFOUT) towards the LT's NT's Backplane (= NTIO) Serial-Management interface (BSM) Shelf Activity Status (SAS) interface NT’s Serial IO interface (SIO) Ethernet Configuration and Management Interface (ECMI) Inter Integrated Circuit Management Interface (I2C) LT interfaces (16/18) (LTS) NTIO uplinks (6) (BUI) SMAS power supply interface NT board power supply interface NT I/O module power supply interface
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Combined NT Unit version A 7
NANT-A
Alarm Control Unit The Alarm Control Unit (ACU) provides:
• • • •
a central point for internal (= subrack) related alarm collection. a central point for external (= CO) related alarm collection and control. the necessary circuitry for rack alarm control and visualization. an Alarm Cut Off (ACO) capability to the subrack.
The following ACU functionality is provided:
• • • • •
Fan unit alarm interface (2 inputs) Central Office alarm interface (5 miscellaneous inputs) Circuit breaker alarm (1 input) Door alarm (1 input) Subrack alarm lamp interface
These ACU interfaces can be found on the backplane of the subrack, for more information refer to the FD Hardware Installation Manual.
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NANT-A 8
Combined NT Unit version A
Physical Description Figure 3 shows the side and front view of the NANT-A. Fig. 3: View of the NANT-A
0 1
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Combined NT Unit version A
NANT-A
Dimensions: The dimensions of the NANT-A are:
• Height: 405 mm • Width: 30 mm • Depth: 205 mm
System Status LEDS Figure 4 shows the system status LEDS of the NANT-A. Fig. 4: System Status LEDs PWR ACT
ALM
Table 2 gives the definitions of the system status LEDS on the NANT-A. Table 2: System Status LED Definition Port
Description
PWR
• • • • • •
ACT
ALM
Green - Power present Off - No power Green - Active Off - Stand-by Red - Alarm condition exists Off - No alarm condition exists
Port LEDs Table 3 gives the definitions of the port LEDS on the NANT-A. The LEDs for the RJ45 port are embedded in the RJ45 connector and indicate the speed and the link/activity status. These LEDs will be turned off if the respective combo SFP port is working. Each SFP port has a respective single LED associated with it to visualize the link and activity status.
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NANT-A
Combined NT Unit version A Table 3: Port LED Definition Port
Description
10/100/1000Base-T Ports LED (built-in RJ45)
Speed LED
• • •
Green - 1000M Yellow - 100M Off - 10M or no link
Link / Active LED
• • • SFP Ports LED
Green - link Blinking green - transmitting or receiving packet on this port Off - No link detected at this port
Link / Active LED
• • •
Green - link up at this port Blinking green - transmitting or receiving packet i n link up state Off - No link detected at this port
Alarm Cut Off The NANT-A is equipped with an Alarm Cut O ff switch and an Alarm Cut Off indication LED (refer to Figure 3).
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Craft Cable Connector The Craft cable connector is a male RJ45 connector. Fig. 5: RJ45 Connector
8
1
Table 4 shows the connector pinning (both RJ45 and DB9) for the Craft cable connector. Table 4: CRAFT Cable Connector Signal Name
Type
RJ45 Pin Nr.
DB9 Pin Nr.
Description
DCD
O
2
1
“Data Carrier Detect”
RXD
O
5
2
Craft interface receive data
TXD
I
6
3
Craft interface transmit data
DTR
I
3
4
“Data Terminal Ready”
EG
Ref
4
5
Electrical Ground or “Signal Ground”
-
-
8
-
-
CTS
O
7
8
“Clear To Send”
RI, DSR
O
1
9
“Ringing Indicator” and “Data Set Ready”
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Combined NT Unit version A 10
NANT-A
Power Supply The NANT-A is compatible with -48 Vdc nominal and -60 Vdc nominal power supply systems.
