TECHNICAL INFORMATION GUIDE
Alcatel 1650 SMC
STM-4/1 Optical Multi-Service Node
Table of Contents
Introduction............................................................................................................ 2
1650SMC Advantages ............................................................................................ 2
1650SMC Applications............................................................................................ 3
Product Description ................................................................................................ 3
Functional Description............................................................................................ 4
SDH Cross Connect subsystem....................................................................................5
Clock reference .........................................................................................................5
Control subsystem......................................................................................................5
STM-1/4 interfaces subsystem .....................................................................................6
Traffic port subsystem.................................................................................................6
ISA Matrix switch subsystem ........................................................................................8
Auxiliary and overhead subsystem ............................................................................. 10
Power subsystem...................................................................................................... 11
Physical description .................................................................................................. 11
Abbreviations .......................................................................................................... 12
Alcatel 1650 SMC / Release 4
- ability to create new revenues from today s and
Introduction
future competitive data services by enforcing and
.SDH (Synchronous Digital Hierarchy) is today the
verifying SLAs (Service Level Agreements) based on
dominant transport technology in metropolitan and
embedded QoS (Quality of Service) patterns.
regional networks.
All this makes the Alcatel 1650 SMC act as an ideal
With the ever-growing demand for high-speed data
multi-protocol transport node that reveals its
communications, Alcatel enhances its leading portfolio of
outstanding performance when used as building block in
optical transport equipment with data-aware
access/edge metro rings, where traffic coming from
functionality  aggregation, switching and forwarding
different clients can be consolidated into common SDH
traffic in the proper data layer  to deliver high
transport resources by means of cell- or packet-based
performance multi-technology networking solutions.
statistical multiplexing.
Alcatel s Optical Multi-Service Nodes (OMSN) 
equipped with ISA (Integrated Service Adapter) plug-in
1650SMC Advantages
modules  provide world-class Next Generation SDH
functionality and capacity through aggregation of
The main strategic advantages of the OMSN family are:
broadband multi-protocol traffic patterns such as
Ethernet, MPLS, ATM and Packet Ring. - Completeness: a comprehensive range of network
elements for all transmission needs, from customer
Alcatel 1650 SMC Optical Multi-Service Node is an ideal premises applications to metropolitan networks, to
space saving, next-generation multi-service building long-haul and ultra long-haul terrestrial and trans-
block for local and metropolitan networks, providing oceanic applications.
unmatched performances for its room occupation.
- Simplicity: the unnumbered possibilities offered by
1650SMC offers telecom carriers and service providers
OMSN for network construction are provided by the
the powerful solution to build intelligent optical
fewest building blocks. Reuse of modules between
networks with integrated TDM and Packet capabilities
different systems is almost total.
and achieve the optimal balance between new
competitive service offerings and traditional revenue-
- Future-readiness: in addition to traditional
generating services.
transmission applications, OMSN deals effectively
with data traffic patterns providing aggregation,
The Alcatel 1650SMC is compliant with the Synchronous
switching and forwarding traffic in the proper data
Digital Hierarchy (SDH) defined in ITU-T
layer.
Recommendation G.707.
- Backward compatibility: OMSN guarantees full
It can be configured as a Multi Line Terminal
inter-working with the existing installed base in
Multiplexer, as an Add/Drop Multiplexer or as small
broad terms: from optical compatibility, to DCC
cross-connect for applications in linear links, rings, and
(Data Communications Channels) compatibility, to
meshed networks. In all applications various network
network management. In other words, existing
protection mechanisms are provided.
networks can be upgraded with new equipment
Alcatel 1650 SMC features all standard PDH and SDH
without constraints.
interfaces from 2Mbps to 622 Mbps and offers Integrated
- Cost-effectiveness: by sharing replaceable units
Service Adapter (ISA) modules specifically designed for
(common parts as well as traffic ports) among
rate-adaptive transport of Ethernet and Gigabit
different systems but also reusing entire shelves for
Ethernet traffic patterns through the optical network
stand-alone ADM and large Cross-Connects
optimizing the transport infrastructure to new data
configurations, network operators can largely reduce
traffic patterns:
the impact of spare holding and personnel training
- Ethernet, Gigabit Ethernet, ATM and MPLS-based
which typically affect overall network operation
Packet Ring switching capabilities for improved data
costs. The installation of one equipment where
streams connectivity
several similar or different ones are normally used
brings relief to costs of ownership.
- cost-effective management and transport of packet-
based data applications within the existing optical
- Management: no matter how the network is built or
infrastructure  no need to add specific overlay data
what networking technologies are used for edge and
networks
backbone applications (Ethernet, ATM, SDH, WDM)
OMSN delivers one unified management solution.
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In addition, 1650SMC brings the following specific
1650SMC Applications
benefits:
The 1650SMC can be used for transmission over G.652,
- Flexibility: a Compact ADM-4 card concentrates two
G.653 and G.654 fibers. The main applications can be
STM-4 or STM-1 plug in modules, SDH matrix,
identified in the following areas:
synchronization functions and equipment control
- Customer premises;
management. The Compact ADM cards can be 1+1
- Local and Metropolitan Rings;
EPS protected. Three slots are then available for
- Regional meshed backbones;
allocation of traffic ports, where flexibility is total.
- Point to point links with intermediate drop/insert
The system may be configured for example as
and/or regeneration stations;
2xSTM-4 rings cross-connect exploiting the
- Multi-service data-centric Metro Edge context;
maximum drop capacity of 12x STM-1 signals or 63 x
Alcatel 1650 SMC Optical Multi-Service Node offers
2Mbit/s. Multiple SNCP rings may be terminated by
integrated data-aware capabilities that help
the same node (e.g. up to 8 x STM-1 rings). The VC
improving bandwidth utilization and network
cross-connect size provides full connectivity at all VC
dimensioning. Alcatel 1650 SMC acts as an ideal
layers for up to 32x32 STM-1 equivalent payloads.
multi-protocol transport node that allows
- Reliability: 1650SMC offers two types of network
consolidation of different traffic patterns (TDM,
protections: Linear Multiplex Section Protection
ATM, IP, Ethernet, Packet Ring) onto shared SDH
(MSP) and Sub-Network Connection Protection
VCs, while performing traffic control functions such
(SNCP). Node protection in addition to line
as shaping and policing, which are vital to avoid
protection is possible as all replaceable units are
network congestion and to provide QoS.
optionally redundant. Power supply protection is
inherent as the DC/DC conversion function is
distributed on each card.
Product Description
- Easiness: 1650SMC has a centralized control
1650SMC is an STM-1/4 Network Element for
architecture that limits the presence of processors
transmission and cross-connection of a wide range of
and software to the Equipment Controller and
PDH and SDH signals. It can operate as a multi
Matrix units and to the ATM and ISA PR-EA switch
Terminal or as cross connect with up to 28xSTM-1
card. Traffic ports have no on-board processors and
equivalent ports capacity. The matrix size is 32x32 STM-
are common to the family members. 1650SMC also
1 equivalent at the High Order and Low Order VC level.
offers local and remote SW download, has the
minimum possible set of replaceable items and Figure 1 shows the multiplexing schemes implemented
hugely shares hardware items with other members by 1650SMC.
of the OMSN family.
Figure 1 1650SMC Multiplexing structure
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The traffic units can be plesiochronous (PDH) or A centralized matrix implements the cross-connect
synchronous (SDH). The plug-in cards can be of the function. The full non-blocking matrix allows cross
following types: connection of up to 32x32 STM-1 equivalent at High
Order level and Low Order level between all traffic ports.
- 63x2Mbit/s unit;
- 63x2Mbit/s unit G.703/ISDN-PRA unit; A wide auxiliary capacity, in accordance with SDH
- 3x34/45Mbit/s Switchable unit; standards, is available for embedded services. An
Engineering Order Wire channel, with DTMF signaling,
- 4x140Mbit/s-STM-1 Switchable electrical unit;
can be accessed by a micro-telephone for maintenance
- 4xSTM-1 electrical unit;
facility.
- 4xSTM-1 electrical/optical unit;
- 1xSTM-4 optical unit;
The clock reference function, located in the Compact
- ATM switch (4x4 VC-4) unit;
ADM units, synchronizes the 1650SMC and provides
- 11x10/100 BaseT i/f Ethernet unit;
generation and distribution of a synchronization clock.
- 14x10/100 BaseT i/f Ethernet access unit;
The clock can be locked to an external 2MHz or 2Mb/s
- 4xGigabit Ethernet rate adaptive unit;
source, to any STM-N ports or 2Mbit/s traffic ports or to
- Packet Ring modules:
the internal oscillator. The SSM (Synchronization Status
" Packet Ring Edge Aggregator with 4x10/100
Message) quality and priority algorithms are supported.
BaseT i/f;
The Equipment Controller, located on the Compact ADM
" Packet Ring Edge Aggregator with 1Gbit
cards, provides configuration, alarm status and
Ethernet i/f.
performance monitoring data. A software download
Equipment Controller, SDH Matrix and clock reference
facility (Local and Remote) is available in order to update
unit are centralized into Compact ADM cards that can
the complete software of the control subsystem.
host STM-1 and STM-4 plug-in modules:
The system can be managed either by a CMISE Craft
- Compact ADM-1 up to 2 x STM-1 modules or 1 x
Terminal running on a Personal Computer attached to
STM-4 plus 1 x STM-1;
the F interface or by the Alcatel OMSN Network
- Compact ADM-4 up to 2 x STM-1/4 modules or
Management System through the Q interface.
mixed configuration.
Moreover, the 1650SMC can work as a Mediation Device
All electrical traffic ports can be optionally protected in
for Alcatel NEs accessible through the Q2/RQ2 interface.
N+1 configuration.
In this way, it is possible to transport information about
alarms and configurations of PDH or/and Access System
According to the network topology, single ended and dual
to/from a centralized TMN using the standard SDH DCC
ended MSP (Multiplex Section Protection) can be
network.
implemented between any STM-n interfaces. SNCP (Sub
Network Connection Protection) inherent (SNCP/I) as
DC/DC converters, located on each board, guarantee
well as non-intrusive (SNCP/N) are also provided at all
powering of the system. The distribution of power
VCi levels.
supplies inherently guarantees protection.
The SDH ports that participate in a protection scheme
(MSP or SNCP) can be flexibly selected by craft terminal
Functional Description
or management system, regardless of their position in
the shelf (traffic port or access module).
The equipment consists of the following subsystems:
1650SMC can realize non-intrusive Path Overhead
Monitoring (POM) functions on 100% of Low Order and - Compact ADM subsystem, composed of:
High Order VCs.
" SDH Vci cross-connect subsystem;
" Clock Reference subsystem;
Short and long haul optical interfaces are available for
" Equipment Control subsystem;
STM-1 and STM-4 interfaces. STM-1 interfaces can also
" 2 x STM-1/4 interfaces;
perform bi-directional transmission over a single fiber by
means of splitters/combiners.
- Traffic port subsystem
" ISA Matrix switch subsystem
A software protocol between the two ends makes sure
" Auxiliary and overhead subsystem
that fiber cuts are properly detected and generate LOS
" Power subsystem
alarms even in presence of signal reflection.
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SDH Cross Connect subsystem
Automatic selection of one of those sources is achieved by
selector B using either quality (SSM algorithm) or
The 1650SMC SDH cross-connect is built upon a non-
priority criteria. Also manual selection is possible.
blocking matrix that can interconnect AU4s, TU3s and
The SETS function produces two outputs.
TU12s between any SDH or PDH ports accessing the
The NE clock reference is used as internal timing source
system.
and to synchronize the outgoing SDH STM-n signals.
Several types of connections may be established, such as:
Two external 2MHz or 2Mb/s outputs are generated as a
- ·unidirectional point-to-point;
possible source for external devices.
- ·bidirectional point-to-point;
Up to 6 candidate references may be selected among all
- ·unidirectional point-to-multipoint;
STM-n and 2Mb/s traffic ports in the system. Two 2MHz
- ·SNCP Drop & Continue;
or 2Mb/s external inputs and two outputs are available.
When configured as 2Mb/s, the external I/Os can carry
The capacity of the matrix is 32x32 STM-1 equivalent
the SSM timing marker information.
ports at the High Order and Low Order VC level.
The SETG function has three modes of operation: locked,
holdover and free-running. In holdover mode, the SETG
34Mb/s
holds the frequency of the last valid reference with a
140Mb/s 2Mb/s
STM-1 STM-4 ports 45Mb/s
maximum drift of 0.37ppm per day. The accuracy of the
ports ports
Ports
ports
local oscillator is 4.6 ppm. When the SDH matrix is
protected in 1+1 configuration, also the Clock Reference
AU-4 TU-3 TU-12 VC-4 VC-3 VC-12
function is protected.
AU-4 Yes - - Yes - -
STM-1
TU-3 - Yes - - Yes -
Control subsystem
STM-4
TU-12 - - Yes - - Yes
The control subsystem realizes the Synchronous
140Mb/s VC-4 Yes - - Yes - -
Equipment Management Function (SEMF) defined by
ITU-T Recommendation G.783. It communicates with
34Mb/s
VC-3 - Yes - - Yes -
external management systems through a standard QB3
45Mb/s
CMIP interface.
2Mb/s VC-12 - - Yes - - Yes
The management information model is compliant to the
ITU-T G.774 series of recommendations.
Communication with the local craft terminal is also
Table 1 High Order/Low Order connectivity for 1650SMC
based on the same interface.
The control subsystem is responsible for applying the
The SDH VC matrix implements single-ended SNCP/N
configuration requested by the element manager or craft
(non-intrusive) and SNCP/I (inherent) protections.
terminal and to report the status of the equipment as
well as alarm and performance information. It is also
responsible to drive automatic protection switching.
Clock reference
1650SMC has centralized control architecture, built upon
a two-level model:
The synchronization subsystem provides the timing
reference required by all components in the network - Equipment Controller (EC) for DCC networking,
CT/OS interface and data-base management;
element and represents the SDH Equipment Clock
(SEC). The subsystem performs the functionality - Shelf Controller (SC) for provisioning, alarm
detection, performance monitoring and equipment
identified by the ITU-T recommendation G.783 as SDH
protection switching.
Equipment Timing Source (SETS). The SDH Matrix unit
realizes the SETS function
Two microprocessors are dedicated respectively to the EC
and SC functions. They communicate through an
The SETS accepts synchronization inputs from a number
internal bus (ISSB / Intra Shelf Serial Bus).
of sources:
The Shelf Controller processor interfaces directly
- STM-n lines;
through a backplane parallel bus (ISPB / Intra Shelf
- 2Mb/s traffic ports;
Parallel Bus) all circuits (ASICs) implementing the SDH
- 2MHz / 2Mb/s external input;
functions in the shelf, for data collection (alarms,
- Internal oscillator.
performance monitoring) and configuration provisioning
purposes.
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The Message Communication Function (MCF) 63 x 2Mb/s unit
implemented by the Equipment Controller can manage
The unit provides the physical interface for the
up to 8 DCC channels. Selection of the STM-n ports and
asynchronous mapping of G.703 2Mb/s signals into SDH
of the DCCm or DDCr channel is performed via Local
VC12s.Each unit supports 63 interfaces.
Craft Terminal.
The unit is the same for 75&! and 120&! applications.
A PCMCIA Flash Card located in the Equipment Impedance match is performed at the access module
Controller unit provides Mass storage for the level. 21x2Mb/s 75&! and 21x2Mb/s 120&! access modules
configuration database and SW package. The Equipment provide the G.703 interconnection interfaces.
Controller can also perform mediation device functions
The Retiming unit implements the 2Mb/s retiming
for co-located Alcatel equipment managed through the
function allowing synchronizing the outgoing 2Mbit/s
Q2/RQ2 interface.
signals with the internal clock reference.
The management information directed to or retrieved
Retiming can be enabled/disabled at the 2Mb/s port level.
from Q2/RQ2 Network Elements (e.g. access
1650SMC can house up to 1+1 63x2Mb/s units and 3
multiplexers, microwave radio systems, PDH terminals)
21x2Mb/s access modules in the shelf.
connected to the 1650SMC is transported through the
SDH DCCs to the TMN, thereby avoiding the
deployment of additional data communication networks.
3 x 34Mb/s / 45Mb/s unit
When the Compact ADM card is protected in 1+1
The unit provides the physical interface for the
configuration matrix and the Shelf Controller function
asynchronous mapping of G.703 34Mb/s or 45Mb/s
are protected.
signals into SDH VC3s. Each unit supports 3 interfaces.
A failure on the Equipment Controller unit has neither
The selection of the working mode (3x34Mb/s or
impact on traffic, nor on automatic protection switching
3x45Mb/s) is controlled via software.
functions managed by the Shelf Controller processor of
Two dedicated access modules (3x34Mb/s and 3x45Mb/s)
the SDH matrix unit.
are used for the 34Mb/s (75&!) and 45Mb/s (100&!)
applications.
STM-1/4 interfaces subsystem
1650SMC can house up to 3 3x34M/45M units and 3
3x34Mb/s or 3x45Mb/s access modules.
Compact ADM-1 card can host 2 STM-1 optical plug in
Possible configurations: unprotected 3+0, 2+1 protection.
modules, or 1 STM-4 optical plug in module plus 1 STM-
1 modules.
Compact ADM-4 can host 2 STM-4optical plug in or
4 x 140Mb/s / STM-1 unit
mixed configuration of STM-1 and STM-4.
The unit provides four bi-directional 140/155Mb/s G.703
interfaces. The selection of the working mode (per port)
Traffic port subsystem
is controlled via software.
SDH and PDH traffic ports are available through the The electrical interfaces are available on a
4x140/155Mb/s access module.
following units:
When a port is configured as STM-1, the VC4 can either
- 63x2Mbit/s unit;
be unstructured or structured into lower order VCs.
- 63x2Mbit/s unit G.703/ISDN-PRA unit;
1650SMC can host up to 3+0 or 2+1 unit and 3 access
- 3x34/45Mbit/s Switchable unit;
modules.
- 4x140Mbit/s-STM-1 Switchable electrical unit;
- 4xSTM-1 electrical unit;
- 4xSTM-1 electrical/optical unit;
4 x STM-1 electrical unit
- 1xSTM-4 optical unit;
The unit provides four bi-directional STM-1 G.703
- ATM switch (4x4 VC-4) unit;
interfaces. The electrical interfaces are available on a
- 11x10/100 BaseT i/f Ethernet unit;
4xSTM-1 electrical access module.
- 14x10/100 BaseT i/f Ethernet access unit;
For each STM-1 the VC4 can either be unstructured or
- 4xGigabit Ethernet rate adaptive unit;
structured into lower order VCs.
- Packet Ring modules:
1650SMC can host up to 3+0 or 2+1 unit and 3 access
" Packet Ring Edge Aggregator with 4x10/100
modules.
BaseT i/f;
" Packet Ring Edge Aggregator with 1Gbit
Ethernet i/f.
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4 x STM-1 electrical / optical unit The main board is 1 slot wide and can be housed in any
slot of the three slots available for traffic ports; it
The 4xSTM-1 electrical/optical unit provides four
provides 11 10BaseT/100BaseT interfaces. The access
electrical (G.703) or optical (several types) STM-1
module, to be allocated into the access area of the
interfaces.
1650SMC shelf, provides 14 additional
10BaseT/100BaseT interfaces.
The unit can host 2 replaceable STM-1 electrical or
optical (short or long haul) plug-in modules.
The connection capacity towards the back panel of ISA
2 additional STM-1 interfaces managed by the unit are
port is 4xVC4 equivalent. Up to three ISA Ethernet main
available in the access area of the shelf by means of an
port + three ISA Ethernet Access module can be hosted
adapter housing the STM-1 electrical/optical plug-in
into 1650SMC shelf.
modules.
The unit is able to execute a rate-adapting action; hence
Any combination of electrical or optical (short or long
it is able to cross connect a 10/100Mbit/s Ethernet
haul) is possible on the same unit.
stream into an SDH virtual container of any dimension
1650SMC can house up to three 4xSTM-1 units.
(VC12, VC3, VC4).
The electrical or optical STM-1 interfaces can participate
The Ethernet frames received through the native
in any combinations of 1+1 linear MSP or SNCP schemes
interfaces are mapped using the GFP protocol into the
that can flexibly be established by craft terminal or
SDH VC-x and then transmitted through the SDH.
management system.
Data transfer rate from Customer equipment is limited
Ports participating in the protection scheme may belong
in accordance with SDH capacity by the 802.3x flow
to the same unit or to different modules, including STM-
control mechanism.
1 interfaces on Compact ADM card.
The flow control mechanism is used to prevent the
congestion of the transmission network that may cause
1 x STM-4 optical unit
packet discarding.
Full transparency with respect of the upper layer
The 1xSTM-4 optical unit provides one STM-4 optical
protocols is maintained.
interface (on front panel). Several short and long haul
types are available.
SDH bandwidth allocation can be managed following two
1650SMC can house up to three 1xSTM-4 units.
approaches:
The STM-4 interfaces can participate in any
- Each Ethernet interface is independently mapped
combinations of 1+1 linear MSP or SNCP schemes that
into 1xVC12/VC3/VC4. The container is then cross-
can flexibly be set up by craft terminal or management
connected in the matrix as any other VC tributary.
system.
- Each Ethernet interface can be mapped as N x
VC12/VC3 through the usage of packet
concatenation. Each VC runs independently inside
ISA Ethernet 10/100 BaseT
the SDH network; for each of these VC a dedicated
ISA Ethernet module provides 10/100baseT interfaces
cross-connection is required inside the matrix.
allowing the interconnection of two LANs in a point-to-
Thanks to the information contained into the GFP
point configuration.
Header the frames are re-aligned at the sink side.
The major benefits that can be experienced utilizing ISA
Ethernet card in the SDH networks are:
ISA Gigabit Ethernet
- Interfaces cost reduction;
ISA Gigabit Ethernet provides 1000BaseSX/1000BaseLX
- Bandwidth shaping according to clients needs.
interfaces allowing the interconnection of two LANs in a
The interface cost reduction is achieved thanks to the
point-to-point configuration.
native interfaces provided on the board that allow
The card allows realizing the following connections in the
replacing the expensive up-link ports, which use the POS
SDH Network:
(Packet Over SDH/SONET), traditionally. This leads to
an infrastructures optimization of the operator and cost
- Transport of a Gigabit Ethernet signal between two
reduction for the end-user.
data equipment.
The bandwidth can be allocated to the end users in - Guaranteed QoS between end points over the
network.
accordance with the real need, independently from the
interface type.
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These features comply with the following standards: 1650SMC can host ISA-ATM card 600 Mbps (1 slot wide
plug-in card) that uses ports located in modules
- IEEE 802.3z (gigabit interfaces)
(traditional traffic ports) that are equipped in the OMSN
- ITU G.707 and G.783 (including virtual
node that is hosting the ISA-ATM card.
concatenation)
ISA-ATM card 600 Mbps has an equivalent front-end of 4
Gigabit-Ethernet port card can host up to four 1000Base
structured VC-4s. Up to 16 ATM interfaces can be
SX/LX interfaces SFP (Small Form Factor Pluggable).
connected to ISA ATM switch.
Gigabit-Ethernet port card can be located in any traffic
ports slot. ISA-ATM V2 card 600 Mbps has an equivalent front-end
of 4 structured VC-4s. Up to 252 ATM interfaces can be
The throughput towards the back panel is 622 Mb/s. connected to ISA ATM V2 switch.
Up to twelve Gigabit Ethernet interfaces can be provided
in one shelf. Up to two ISA ATM can be equipped into 1650SMC in
The traffic received by the 1000baseSX or 1000baseLX any of the available traffic slots; 1+1 protection 1+1 is
Ethernet interfaces on the ISA-GbE card is mapped into supported.
a number of VC-4 SDH containers, more precisely the
ISA ATM ports support point to point and point to
Gigabit Ethernet traffic passing trough 1 x Gigabit
multipoint PVC (also referred as Hard-PVC) and Soft-
Ethernet physical interface is mapped into a specific VC-
PVC connections.
4-xv (x=12,3,4,5,6,7) structure using the standard virtual
concatenation.
Hard-PVC connection has to be provisioned, manually
(CT, EML) or automatically (higher layer management)
Each Gigabit Ethernet frame is mapped without
by the management platforms, node by node along the
modifications into a generic framing procedure frame
entire connection path.
(GFP-ITU-T G.7041).
The flow control mechanism, implemented in accordance
Soft-PVC connection has to be provisioned at the
with IEEE 802.3x, is used to prevent the congestion of
extremities (defining VPI and VCI) while are signaled
the transmission network that may cause packet
and maintained along the path by PNNI protocol.
discarding.
ISA-ATM supports the following traffic types:
- UBR;
ISA Matrix switch subsystem
- UBR+;
1650SMC provides world-class next generation SDH
- CBR;
functionality and capacity through aggregation of
- VBR-rt, nrt;
broadband multi-protocol traffic patterns.
- GFR.2.
Alcatel 1650 SMC can be equipped with Integrated
Traffic congestion avoidance is guaranteed via Selective
Service Adapter (ISA) plug-in modules that perform ATM
Cell Discard (SCD) and combined Early and Tail Packet
and Packet Ring transport and switching functions for
Discard mechanisms (EPD, TPD).
Virtual Private LAN Services at variable bit rates.
ATM OAM (AIS, RDI, LOC, TSF) end-to-end, non-
intrusive monitoring and performance monitoring are
supported for maintenance purposes.
ISA ATM plug-in modules
ISA ATM V2 has the same set of features of ISA ATM
For ATM-based network solutions, ISA-ATM plug-in
with the addition enhanced E1 number of ports and IMA
board on Alcatel 1650 SMC is the optimal solution for
functionality for UMTS application.
transport and aggregation of ATM traffic. Digital
Subscriber Line (DSL), Local Multipoint Distribution
Service (LMDS) and UTRAN (UMTS Terrestrial Access
Network) are among the applications in which operators
and service providers can take benefit from deploying
ISA-ATM for optimal network utilization and cost-
effective network operation.
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The following table summarizes the different kinds of Its MPLS core engine ultimately ensures carrier-class
physical interfaces that can be terminated on the ISA- Ethernet with QoS-based Service Level Agreements
ATM matrix: (SLA).
ISA packet ring card is composed of:
1-slot wide ATM module
- ISA-PR-EA card 1.6 Gbps (1 slot wide plug-in card)
providing Ethernet 10/100 BaseT, 1000 Base SX/LX
Throughput 600 Mbps
(SFP optical modules):
(4 x VC-4 equivalent)
" PR-EA with 4x 10/100 i/f;
" PR-EA with 1x1000 i/f.
Switching capability VC and VP switching
Up to two ISA PR-EA can be equipped into 1650SMC in
OMSN PDH Ports E1 (up to 16)
any of the available traffic slots. 1+1 Protection is
E1 (up to 252)
supported.
E3 (up to 12)
ISA packet ring cards Ethernet services portfolio
includes:
OMSN SDH Ports VC-12 (up to 16)
- Virtual Private E-Line;
VC-3 (up to 12)
- Virtual Private E-LAN;
STM-1 (up to 4)
- Broadband Access & Distribution..
Local Port STM-1 mini-drawer
ISA packet ring cards supports the following Service SLA
attributes:
ATM ports number 16 (any mix of ports)
- Guaranteed;
Connections 2000 max (VC or VP)
- Regulated;
- Best Effort.
VC/VP connection Hard VCC/VPC
Per packet wire speed classification and prioritization
Soft VCC/VPC PNNI)
criteria includes:
Policing UPC and NPC (VC/VP)
- Port;
- 802.1p/q;
Shaping Input and output (VC/VP)
- SA, DA;
Congestion mgm. TPD, EPD, SCD
- TOS, DSCP;
OAM AIS, RDI, CC - MPLS label (exp bits).
Signalling PNNI 1.0 Traffic congestion avoidance is guaranteed via network
wide Global Congestion Avoidance Control jointly
Switch architecture Shared memory with a total
providing statistical multiplexing for the Best effort
buffer capacity of 64K cells
traffic burstiness.
Table 2 ISA ATM characteristics
Packets are forwarded towards their destination
according to the following criteria:
" Port;
ISA Packet Ring switches
" 802.1q;
" MPLS Label.
ISA Packet Ring modules provide the solution to
" DA;
integrate Ethernet switching capability, multiple VLAN
services and Layer 2 Virtual Private Networks (L2-VPN)
into the optical transport network following the
smoothest and most cost-effective path.
ISA Packet Ring Edge Aggregator plug-in card is based
on Ethernet over MPLS technology and implement the
natural evolution from point-to-point Ethernet leased
lines towards point-to-multipoint and any-to-any
Ethernet architectures.
TECHNICAL INFORMATION GUIDE ALCATEL 9 >
Alcatel 1650 SMC / Release 4
Auxiliary and overhead subsystem
POH bytes Description
The SDH standard offers a wide range of service
channels in the Section Overhead (SOH) and Path
J1 Path Trace
Overhead (POH) bytes of the synchronous frame.
B3 Path Parity check
These bytes are used for alignment word, parity check,
C2 Signal label
network management operations; performance
monitoring; some data and orderwire channels are
G1 Path status indicator (REI, RDI)
available to the user.
F2/F3 64kb/s user data channels
Overhead bytes managed by the 1650SMC are listed in
H4 Multi-frame position indicator
the following tables.
Table 5 Supported VC4/VC3 Path Overhead bytes
RSOH bytes Description
A1-A2 Framing bytes
POH bytes Description
J0 Section Trace
V5 Path Parity check, REI, RDI,
B1 RS Parity check
Signal label
E1 RS Engineering OrderWire (EOW)
J2 Path Trace
F1 64kb/s user data channel
Table 6 Supported VC12 POH bytes
D1-D3 RS DCC channels
Table 3 Supported Regeneretor Section OH bytes
TCM allows monitoring within the operator domain. The
quality within the operator s own domain can be proven
regardless of the received quality of the signal at the
entry point of the network.
MSOH bytes Description
In addition to the highlighted SOH bytes, the F2 and F3
B2 MS Parity check
bytes of the VC4/VC3 POH can be cross-connected or
K1-K2 Multiplex Section Protection (MSP)
dropped locally.
D4-D12 MS DCC channels
All such bytes can be flexibly (i.e. upon operator request)
S1 Synchronization Status Message cross-connected from/to any SDH or PDH (34Mb/s,
45Mb/s, 140Mb/s) port in the system or from/to local
(SSM)
AUX/EOW terminations.
M1 MS Remote Error Indication (REI)
1650SM provides the following auxiliary terminations:
E2 MS Engineering Orderwire
- 2 x V.11 (64kb/s)
Table 4 Supported Multiplex Section OH bytes
- 2 x RS-232 (64kb/s)
- 2 x G.703 (64kb/s)
- 1 x G.703 (2Mb/s)
TECHNICAL INFORMATION GUIDE ALCATEL 10 >
Alcatel 1650 SMC / Release 4
Two slots of the right part are dedicated to Compact
Power subsystem
ADM cards.
The architecture of the power subsystem is distributed.
Three slots can be used for the allocation of traffic units:
The input battery power can range from  48v to  60v is
- 63x2Mbit/s board;
delivered without level translation to all cards in the
- 3x34/45Mbit/s Switchable board;
shelf.
- 4x140/STM-1 Switchable board;
Each card has an on-board DC/DC converter that
- 4xSTM-1 elec./opt. board;
generates the necessary voltages for the on board
- 1xSTM-4 optical board;
components.
- ISA Ethernet 11x10/100 BaseT;
Distribution of power supplies inherently provides
- ISA Gigabit Ethernet 4x1000SX/LX;
protection against single converter failures.
- ISA ATM card;
- ISA PR-EA;
Physical description
Main shelf physical description
The mechanical design of the 1650SMC is based on half
19 ETSI compatible shelf, consistent with the Alcatel
standard S9 equipment practice.
The mechanical dimensions of the shelf are the following:
- 241 mm Wide x 350 mm High x 250 Deep
The cards to be housed inside the shelf have the
following dimensions:
- 265 mm High x 213 mm Deep.
The mechanical design provides EMI/EMC performances,
in compliance with ETSI standard 300 386-1
 Telecommunication Centre .
The shelf is divided in two parts: the left side is devoted
mainly to access purposes; the right side is devoted to the
traffic units.
The access part (5 slots) can contain the following units
(88mm x 265mm):
- 1 slot for AUX, EOW, 2MHz or 2Mbit/s
Figure 2 1650SMC physical view
synchronization I/O connection module (SERGI);
- 1 slots for general service connectors such as Power,
QB3 Int., Housekeeping, remote alarm, rack lamp,
Q2/RQ2 (CONGI);
The maximum quantity of each interface per shelf is:
- 3 slots for traffic access module. These slots can be
- 63x2Mbit/s interfaces;
equipped with these units:
- 9x34 or 45 Mbit/s interfaces;
- 21x2Mbit/s access module (75&! or 120&!);
- 12x140Mbit/s interfaces;
- 3x34 Mbit/s access module;
- 16xSTM-1 electrical or optical interfaces;
- 3x45 Mbit/s access module;
- 7xSTM-4 optical interfaces;
- 4x140/STM-1 electrical access module;
- 75xEthernet 10/100 BaseT;
- Electrical Protection module (to be used for 34, 45,
- 12xEthernet 1000 Base SX/LX;
140 and STM-1 electrical interface protection);
- 2xSTM-1 elec./opt. adapter module;
- 14xEthernet 10/100 access module;
TECHNICAL INFORMATION GUIDE ALCATEL 11 >
Alcatel 1650 SMC / Release 4
Abbreviations
TSA Time Slot Assignment
ABN ABNormal condition
TSI Time Slot Interchange
ADM Add Drop Multiplexer
UBR Unspecified Bit Rate
AIS Alarm Indication Signal
URG URGent
APS Automatic Protection Switching
VC Virtual Channel
ATM Asynchronous Transfer Mode
VC-x Virtual Container x
ATTD ATTendeD
VP Virtual Path
AU Administrative Unit
AUX AUXiliary
BA Booster Amplifier
CRU Clock Reference Unit
DBR Deterministic Bit Rate
DTMF Dual Tone Multi Frequency
EC Equipment Controller
ECT Equipment Craft Terminal
EMI/EMC ElectroMagnetic Interference
ElectroMagnetic Compatibility
EOW Engineering Order Wire
EPROM Electrically Programmable Read Only
Memory
EPS Equipment Protection Switching
ETSI European Telecommunication Standard
Institute
DXC Digital cross Connect
IND INDicative
ITU-T International Telecommunication Union
JE Joint Engineering
LED Light Emission Diode
LOS Loss Of Signal
MCF Message Communication Function
MSOH Multiplex Section OverHead
MSP Multiplex Section Protection
MS-SPRING Multiplex Section Shared Protection
RING
NE Network Element
NURG Not URGent
OFA Optical Fibre Amplifier
OH OverHead
OOF Out Of Frame
OS Operation System
PDH Plesiochronous Digital Hierarchy
POH Path OverHead
ppm Parts per million
RSOH Regeneration Section OverHead
SBR Statistical Bit Rate
SEMF Synchronous Equipment Management
Function
SDH Synchronous Digital Hierarchy
SNC-P Sub Network Connection Protection
SOH Section OverHead
SSM Synchronisation Status Message
STM Synchronous Transport Module
TMN Telecommunication Management
Network
TECHNICAL INFORMATION GUIDE ALCATEL 12 >
Alcatel and the Alcatel logo are registered trademarks of
Alcatel. All other trademarks are the property of their
respective owners. Alcatel assumes no responsibility for the
accuracy of the information presented, which is subject to
change without notice.
© 08 2003 Alcatel. All rights reserved.
3AL 78976 AAAA Ed. 02