Alcatel 1850 TSS-320 Technical Handbook page 160

– HK Interface: the HK (Housekeeping) interface of the "EC320" unit consists of a set of eight input
and four output signals.
Input signals are dedicated to collect site-specific fault or alarm conditions external to the NE, such
as open door, high temperature, high water level, etc.
Output signals are dedicated to drive site-specific actuators external to the NE, such as generators,
air conditioning, etc.
All the signals have dry-contact interfaces, through which galvanic isolation is obtained.
Under control of the EC software, an output dry-contact interface can be left open or closed to an
independent HKO ground (one each interface); similarly, the input dry-contact interfaces can sense
the open or close status respect to a common, isolated HKI ground.
The EC processor can control the status of the HK output interfaces or read the status of the HK input
interfaces by means of some I/O ports of the CANNONAU device.
At system level, the physical access to the signals of the "HK" interface is provided through a female
connector, located on the shelf back panel (refer to Figure 16. on page 44).
– RA Interface: the RA interface of the "EC320" unit consists of a set of seven parallel output signals
suitable for remote alarm status reporting.
Each signal is associated to an alarm category and reports the summary of the alarm status of the
NE for the relevant category.
The following alarm categories are provided: urgent (RA_URG), not urgent (RA_NURG), internal
(RA_INT), indeterminate (RA_IND), Service power OR (RA_ORC).
All the signals have dry-contact interfaces, through which galvanic isolation is obtained.
Under control of the active EC processor, the dry-contacts can be left open (no alarm) or closed
(active alarm condition) toward a RA ground.
The "EC" processor can control the status of the RA interfaces by means of some I/O ports of the
CANNONAU device.
– LAN Interface: the LAN interface provides access to the NE-internal LAN for communication with
other processors in the NE and with external Operation System (OS) station.
The interface consists of a pair of
protocol IEEE 802.3, supported through the LAN1 and LAN2 ports of the "PQ3/MC1-B" module (refer
to Figure 103. on page 161).
The channels can be configured to support either 10BaseT, 100BaseT or 1000BaseT connections.
The layer-2 protocol functions (MAC controller) together with the PHY transceiver device for these
channels are provided by the "PQ3/MC1-B" module itself.
Both the channels are suitable for connection to an external redundant LAN switch through the back
panel.
– SYS_ID Interface: the SYS_ID interface consists of a set of parallel input signals from the back panel
interface connectors, generally used to collect data for the equipment identification (Equipment ID,
Shelf ID and Slot ID).
– SPI bus Interface: this interface allows access to the unit's remote inventory memory and other
resources connected downstream or directly controlled by the SPIDER device.
The "EC320" board is slave on this interface that is normally controlled by the SC processor on
MT320 board; the interface consists of two SPI compatible serial ports, one each redundant SC
processor, connected to the SPIDER device.
– EPS Interface: this interface is defined in order to support systems where the EC and OAM functions
provided by the "EC320" unit are protected through a 1+1 redundant architecture.
The interface simply consists of a high speed point-to-point Ethernet serial channel (Inter Processor
Link) with some I/O status signals used for the "active / stand–by" role arbitration process.
– LCI interface: this interface consists of an SPI-compatible serial link dedicated to the "Local
Alcatel 1850 TSS-320 Rel. 1.1
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high speed communication channels supporting the Ethernet
Technical Handbook Common
Unit Descriptions