ZyXEL MSAP2000 User Manual
Z
y
XEL
Multi-Services Access Platform
MSAP2000
Technical Manual
V3R0
ZyXEL MSAP2000
Technical Manual
Manual Version
Product Version
Hardcopy order Information
English V3
V3R0
TM-01-V3R0
ZyXEL Technologies Inc.
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http://www.ZyXEL.com
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sales@ZyXEL.com (Sales)
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MSAP2000
Multi-Service Access Platform
Copyright
Copyright © 2004-2007 by ZyXEL Technologies Inc.
The contents of this publication may not be reproduced in any part or as a wh ole, transcribed,
stored in a retrieval system, translated into any language, or transmitted in any form or by any
means, electronic or mechanical, including photocopying, recordin g, or otherwise, without the
prior written permission of ZyXEL.
Published by ZyXEL Technologies Inc. All rights reserved.
Disclaimer
ZyXEL does not assume any liability arising out of the application or use of any products, or
software described herein. Neither does it convey any license under its patent rights nor the
patent rights of others. ZyXEL further reserves the right to make changes in any products
described herein without notice. This publication is subject to change without notice.
Trademark
MSAP2000 and OptiCoreTM are the trademarks belong to ZyXEL. Other trademarks
mentioned in this publication are used for identification purposes only and may be properties
of their respective owners.
MSAP2000 Technical Manual V3.0 1
About This Manual
This manual applies to the ZyXEL MSAP2000 Release 3.
The main purpose of this manual is to make technical description as clear as
possible to the users planning to use the MSAP2000 as the MSAN equipment in
their existing network or in NGN. Due to the increasing demands on new features
and application, this manual is made to reflect the latest information about
MSAP2000 at the time of editing this manual. Please contact ZyXEL sales to
inquiry the latest information on the information that is not provided in this
manual.
Related Manuals
The related documents consist of the following:
Manual Purpose
MSAP2000 Technical Manual
MSAP2000 User Manual
MSAP2000 Installation Manual
MSAP2000 UI operation Manual
It presents a comprehensive introduction to
the ZyXEL MSAP2000.
It introduces the features, composition,
installation and maintenance of the
MSAP2000.
It covers the service configuration and
installation of the MSAP2000.
It provides all the Menu-driven of the
LCT/Telnet for MSAP2000. It is contained
in the delivery CD-ROM, and no hardcopy
is delivered.
MSAP2000 Technical Manual V3.0 2
Conventions
The manual uses the following conventions:
General conventions
Convention Description
Arial Normal paragraphs are in Arial.
Arial Narrow Warnings, Cautions, Notes and Tips are in Arial Narrow.
Boldface
Courier New
Environmental Protection
This product has been designed to comply with the requirements on
environmental protection. For the proper storage, use and dispo sal of this product,
national laws and regulations must be observed.
Headings are in Boldface.
Terminal Display is in Courier New.
MSAP2000 Technical Manual V3.0 3
Table of Contents
Table of Contents
1. System Introduction ..............................................................................................................1-1
1.1. Overview................................................................................................................1-1
1.2. Key Features .........................................................................................................1-2
1.3. System Architecture ..............................................................................................1-5
1.4. Applications and Services .....................................................................................1-6
1.5. Testing and maintenance......................................................................................1-7
2. System Architecture..............................................................................................................2-1
2.1. Overview................................................................................................................2-1
2.2. SDH ADM..............................................................................................................2-2
2.3. NG DLC.................................................................................................................2-3
2.4. E1 Multiplexer........................................................................................................2-5
2.5. IP DSLAM..............................................................................................................2-6
2.6. Gigabit Switch........................................................................................................2-7
2.7. VoIP Gateway........................................................................................................2-8
2.8. Layer 2 Switch.....................................................................................................2-10
2.9. Digital Cross Connect..........................................................................................2-11
2.10. Flexible Topology ................................................................................................2-12
2.11. Local Craft Terminal............................................................................................2-14
2.12. Network Management System ............................................................................2-15
3. Applications and Services ....................................................................................................3-1
3.1. Fiber to the Building (FTTB)..................................................................................3-1
3.2. Fiber to the Curb (FTTC).......................................................................................3-2
3.3. Fiber to the HOME (FTTH)....................................................................................3-3
3.4. Optical Transportation...........................................................................................3-4
3.5. A One-Stop Solution for the Telephone Service Network.....................................3-5
3.6. Application for Data Leased Line Services............................................................3-7
3.7. Application for DSL Services.................................................................................3-8
3.8. Ethernet over SDH Services..................................................................................3-9
3.9. Microwave radio application................................................................................3-10
4. System Components .............................................................................................................4-1
4.1. Overview................................................................................................................4-1
4.2. Terminal.................................................................................................................4-2
4.3. Shelf.......................................................................................................................4-3
MSAP2000 Technical Manual V3.0 i
Table of Contents
4.4. Common Control Modules.....................................................................................4-6
4.5. Trunk Interface Module..........................................................................................4-8
4.6. COT Network Interface Module.............................................................................4-9
4.7. Subscriber Interface Module................................................................................4-12
4.8. Subscriber End Facilities.....................................................................................4-15
4.9. Indoor Rack .........................................................................................................4-16
4.10. Outdoor Cabinet..................................................................................................4-17
5. System Configuration............................................................................................................5-1
5.1. Slot Chart...............................................................................................................5-2
5.2. Module Capacity....................................................................................................5-3
5.3. 120 Lines A/B wire System Configuration (STM-1)...............................................5-5
5.4. 240 Lines A/B wire System Configuration (STM-1)...............................................5-6
5.5. 360 Lines A/B wire System Configuration (STM-1)...............................................5-7
5.6. 480 Lines A/B wire System Configuration (STM-1)...............................................5-8
5.7. 600 Lines A/B wire System Configuration (STM-1)...............................................5-9
5.8. 720 Lines A/B wire System Configuration (STM-1).............................................5-10
5.9. 960 Lines System Configuration (STM-1)...........................................................5-11
5.10. 1890 Lines System Configuration (STM-1).........................................................5-12
5.11. 120 POTS + 24 ADSL System Configuration (STM-1) .......................................5-14
5.12. 240 POTS + 48 ADSL System Configuration (STM-1) .......................................5-15
5.13. 360 POTS + 72 ADSL System Configuration (STM-1) .......................................5-16
5.14. 480 POTS + 96 ADSL V5 System Configuration (STM-1)..................................5-17
5.15. 480 POTS + 96 ADSL + 6 G.SHDSL V5 System Configuration (STM-1)...........5-18
5.16. 960 POTS + 120 ADSL + 4 G.SHDSL V5 System Configuration (STM-1).........5-19
5.17. 1024 POTS + 96 ADSL + Single-ended V5 System Configuration.....................5-20
5.18. 480 POTS + 180 ADSL NGN System Configuration...........................................5-21
5.19. 900 POTS + 180 ADSL + 2 G.SHDSL NGN System Configuration....................5-22
5.20. 460 POTS + 256 ADSL Single-ended NGN System Configuration....................5-23
5.21. 944 POTS + 192 ADSL Single-ended NGN System Configuration....................5-24
6. System Design .......................................................................................................................6-1
6.1. System Capacity....................................................................................................6-1
6.2. Clock Synchronization...........................................................................................6-3
6.3. Redundancy and Protection Design......................................................................6-4
6.4. Reliability ...............................................................................................................6-6
6.5. Ethernet over SDH Design....................................................................................6-7
6.6. IP DSLAM Design..................................................................................................6-8
7. Product Specification............................................................................................................7-1
7.1. Overview................................................................................................................7-1
MSAP2000 Technical Manual V3.0 ii
Table of Contents
7.2. Main Components .................................................................................................7-2
7.3. Common Shelf.......................................................................................................7-4
7.4. Central Office Power Supply Module (CoPSM).....................................................7-7
7.5. Remote Terminal Power Supply Module (RtPSM)..............................................7-10
7.6. Main Processing Module (MPM) .........................................................................7-13
7.7. Expansion Link Module (ELM).............................................................................7-16
7.8. Expansion Processing Module (EPM).................................................................7-19
7.9. Metallic Line Testing Module (MLTM).................................................................7-22
7.10. V5.2 Processing Module (V5P) ...........................................................................7-25
7.11. Packet Voice Module (PVM)................................................................................7-28
7.12. STM-1 Module (SM1)..........................................................................................7-31
7.13. STM-4 Module (SM4)..........................................................................................7-34
7.14. Optical Interface Module (OIM) ...........................................................................7-37
7.15. Quad E1 Module (QE1M)....................................................................................7-40
7.16. Foreign Exchange Office Module (FXO).............................................................7-43
7.17. Foreign Exchange Station Module (FXS)............................................................7-46
7.18. Foreign Exchange Office Payphone Module (FXO-P)........................................7-49
7.19. Foreign Exchange Station Payphone Module (FXS-P).......................................7-52
7.20. 2W/4W Ear and Mouth Module (2W/4W E&M)...................................................7-55
7.21. G.SHDSL Module (GSH).....................................................................................7-58
7.22. U Interface Network Terminal Module (ISDN-U LUNT).......................................7-62
7.23. ISDN U Interface Line Terminal Module (ISDN-U LULT)....................................7-65
7.24. Nx64 Module for Data Leased Service (N64M)...................................................7-68
7.25. Gigabit Ethernet Module (GbE)...........................................................................7-71
7.26. Optical Gigabit Switch(OGS)...............................................................................7-74
7.27. RT Ethernet over SDH Module (REoSM)............................................................7-77
7.28. COT Ethernet over SDH Module (CEoSM).........................................................7-80
7.29. Ethernet Module (ETH)........................................................................................7-83
7.30. Ethernet Switching Module (ESM).......................................................................7-86
7.31. ADSL2/2+ Access Module (AAM) .......................................................................7-89
7.32. Passive Mux Module(PMM).................................................................................7-92
7.33. G.SHDSL Remote CPE (GSH-R)........................................................................7-95
8. System Management .............................................................................................................8-1
8.1. Overview................................................................................................................8-1
8.2. Local Craft Terminal (LCT)....................................................................................8-2
8.3. Telnet.....................................................................................................................8-3
8.4. OptiCore™ Network Management System (NMS)................................................8-4
MSAP2000 Technical Manual V3.0 iii
Table of Contents
9. NMS Management Functions................................................................................................9-1
9.1. Overview................................................................................................................9-1
9.2. Configuration .........................................................................................................9-2
9.3. Performance Monitoring (PM) ...............................................................................9-3
9.4. Fault Management (FM)........................................................................................9-4
9.5. Maintenance..........................................................................................................9-6
9.6. Security..................................................................................................................9-9
10. System Power and Operation Environment............................................................10-1
10.1. System Power......................................................................................................10-1
10.2. Environment Conditions ......................................................................................10-2
11. System Parameter Specification ..............................................................................11-1
11.1. STM-1..................................................................................................................11-1
11.2. STM-4..................................................................................................................11-2
11.3. Gigabit .................................................................................................................11-3
11.4. E1 ........................................................................................................................11-4
11.5. POTS...................................................................................................................11-7
11.6. Pay Phones .........................................................................................................11-9
11.7. 2W/4W E&M Interface.......................................................................................11-11
1 2 3 4 5 6 7 8 9 10 11
MSAP2000 Technical Manual V3.0 iv
1. System Introduction
Table of Contents
1. System Introduction ..............................................................................................................1-1
1.1. Overview................................................................................................................1-1
1.2. Key Features .........................................................................................................1-2
1.3. System Architecture ..............................................................................................1-5
1.4. Applications and Services .....................................................................................1-6
1.5. Testing and maintenance......................................................................................1-7
MSAP2000 Technical Manual V3.0 i
1. System Introduction
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MSAP2000 Technical Manual V3.0 ii
1. System Introduction
1. System Introduction
1.1. Overview
MSAP2000 is a next generation access platform, which supports
triple-play services such as voice, data and video services on a single
shelf. Access network using MSAP2000 is made up of a Central Office
Terminal (COT) and a Remote Terminal (RT) when using SDH trunking;
the COT and RT can be connected by various transmission media, such
as copper wires, optic fibers, or microwave. For NGN network, MS AP2000
can also serve as the single-ended multi-media access gateway for the
triple-play services. The Service Provider’s interface can then be
extended to remote areas such as industrial sites, commercial districts,
and suburban and rural areas, to resolve limitations caused by line
shortage and longer transmission distance.
Not only can MSAP2000 provide service under an existing TDM structure,
it can also offer Service Providers to add-on supplementary features,
based on their own requirements. Modules and software can be installed
based on individual network plans or customer requirements, and existing
TDM networks can seamlessly migrate onto next generation IP network.
MSAP2000’s Remote Terminal (RT) provides several types of user
interfaces, such as PSTN (Narrowband) for POTS and Payphones,
2W/4W E&M analog modules, ISDN for leased line services, G.703 E1
modules, Nx64Kpbs with V.35 interface, G.SHDSL modules, Ethernet
modules for broadband services, and the most up-to-date ADSL2/2+
interface modules. MSAP2000’s flexible system architecture and
modular design makes it an extremely cost-efficient Multiservice Access
Platform. MSAP2000’s comprehensive modular design can assist
Service Providers to deploy their own Access Network within a relatively
short period of time, allowing for the provision of a range of high-speed
and high-quality telecommunication services.
Moreover, MSAP2000’s built-in an Ethernet interface with embedded
SNMP Agent for connection to the SNMP Network Management System.
User-friendly and easy-to navigate GUIs (graphical user interfaces)
provide a full set of OAM&P functions, which include configuration,
maintenance, fault management, performance monitoring, and security
management. This richly integrated Network Management System can
help Service Providers to cut-down on operation costs, as well as provide
a manageable and efficient interface for subscribers to work with.
MSAP2000 allows seamless migration from TDM/ATM network to all IP
network by replacing the network interface modules. Common control
modules, as well as universal shelf all can be re-used to ensure the
effectiveness of the earlier investment.
MSAP2000 Technical Manual V3.0 1-1
1. System Introduction
1.2. Key Features
Multi-service
Provision:
Voice, Data, Video
in one Shelf
Total Solution for
Telephone Voice
Services
Next Generation
DSL Functions
Ethernet over SDH
Cross-connection &
Grooming
Packet Switch
Hybrid Optical
Flexible Topology
Redundancy
Protection
MSAP2000 is an integrated broadband access platform, which
includes several subscriber interfaces within one single shelf, and
can satisfy various customer requirements.
Its interfaces include:
Analog Voice Interfaces: FXS, Payphone, 2W/4W E&M.
Digital Leased Line Interfaces: ISDN BRA/PRA, PABX, Nx64
Kbps, E1, G.SHDSL.
xDSL Interfaces: ADSL, G.LITE, G.DMT, ADSL2/2+, G.SHDSL
Ethernet Interface: 10/100 Ethernet
MSAP2000 provides PSTN and Soft switch voice interfaces,
which include:
(1) FXO: Dual wire PSTN switch analog interface
(2) V5.2 AN: an E1 interface for connection to PSTN V5.2 switch
(3) Soft switch interface: built-in SIP, H.248 and MGCP VoIP
Gateway
The ADSL Access Module (AAM) in MSAP2000 provides
complete IP DSLAM functions.
One module of AAM provides 12 ADSL2/2+ ports, and complies
with ITU-T G.992.1, G.992.2, ANSI T1.413 issue 2, ADSL2
(G.992.3, G.992.4), ADSL2+(G.992.5) and ITU-T G.994.1.
MSAP2000 integrates SDH STM-1 ADM functions. Apart from
providing interfaces for traditional E1 subscribers, it also supports
ITU-T G.7041 and ITU-T X.86 compliant Ethernet over SDH (EoS)
functions, for provision of next generation IP broadband services.
MSAP2000 incorporates the Time Slot Interchange (TSI)
technology. Any input/output port in either the COT or RT can
cross connect at 64 Kbps. Any input/output port at the RT side
can use a 64 Kbit/s time slot basis, to cross connect to any E1
interface on the COT network, to form an E1 signal.
Apart from TDM Switch (TSI) functions, MSAP2000 also provides
Packet switch functions, which support IP network switching
functions, such as IEEE802.1d STP, 802.1p, Port-based &
tag-based VLAN and Static MAC address filtering.
MSAP2000 simultaneously supports two different types of Optical
Trunk Interfaces: SDH STM1/4 and Gigabit Ethernet. All user
interfaces may connect to the COT via a SDH TDM network, or
they can connect to an IP network via a Gigabit Ethernet Packet.
MSAP2000 supports various types of network topologies, such as
Point to Point, Star, Linear, Tree and Branch, Ring. Moreover,
MSAP2000 support both single end and two end configuration to
provide service on access network.
All of MSAP2000’s Common Modules are equipped with
Redundancy functions (1:1, N+1, N:1), to provide double
efficiency and stability during system operation. The 99.99%
in-service quality can be assured. The following modules come
with redundancy functions:
MSAP2000 Technical Manual V3.0 1-2
1. System Introduction
The following modules come with 1:1 redundancy functions:
Power Supply Module: CoPSM, RtPSM
Main Processing Module (MPM)
Expansion Link Module (ELM)
Expansion Processing Module (EPM)
STM-1 Trunk Module (OIM, SM1)
STM-4 Trunk Module (SM4)
V5.1/V5.2 Processing Module (V5P)
The following modules come with N+1/N:1 redundancy functions:
E1 Trunk
Packet Voice module (PVM)
The OIM (SDH STM-1)/SM1/SM4 Optical Interface Modules
provide automatic protection switching (APS) function and 1:1
redundancy protection. The protection time is less than 50ms,
and services will not be interrupted during protection switching.
Local Craft Terminal
(LCT)
The local RS-232 menu-driven management interface allows for
selection of Configuration, Maintenance, Fault Management, and
Security Management functions. In addition, supervisor could
process OAM&P at both COT node and RT nodes. All the
settings will be coordinated automatically and saved in system
database.
MSAP2000 Technical Manual V3.0 1-3
1. System Introduction
Network
Management
System(NMS)
Metallic Line
Testing Module
Built-in Digital
Test Functions
MSAP2000’s OptiCore™, is a highly integrated and easy-to-use
Network Management System that employs user-friendly GUIs
(graphical User Interfaces) to provide a comprehensive set of
OAM&P (Operation, Maintenance and Performance Monitoring)
functions. With this system, the subscriber can remotely monitor,
configure and manage security settings. OptiCore™ NMS can
generate different levels of alarm warnings, and even send alarm
messages to management personnel, based on different service
requirements. The ultimate goal of OptiCore™ NMS is to lower
operation costs, and to help Service Providers efficiently manage
their network, by catering to their specific requirements and
needs.
MSAP2000’s MLTM (Metallic Line Testing Module) can assist
installation and maintenance personnel to instantly confirm Loop
status and performance. MLTM can also connect to the COT
helpdesk for online troubleshooting, via public network or digital
leased lines. When the COT receives a request from the User
Helpdesk, it will test the Carrier System lines, and send the results
back to the Helpdesk. This can help Service Providers save on
cost and manpower for remote testing and maintenance.
MSAP2000 QE1M supports built-in digital testing functions
required by ITU-T O.150 and O.151, and will provide bit-error rate
testing for each digital channel. This function not only eliminates
the need for additional external testing equipment, it can also
ensure service quality.
Seamless Migration
MSAP2000 supports traditional A/B wire switch interface, V5.2
switch interface, and soft switch interface. The capability of
interfaces co-existing allows operator to re-orient part of the
physical voice paths from A/B wire to V5.2 switch or to soft switch.
It also supports to re-orient the co-existing A/B wire interface and
V5.2 interface to soft switch by software configuration. Operator
has no need to un-wrap the physical line and therefore save the
cost of migration from A/B wire to V5.2 to soft switch.
MSAP2000 Technical Manual V3.0 1-4
1. System Introduction
1.3. System Architecture
Scalability
Universal Shelf
Expansion
Modularity
Upgradability
Feature Proof
MSAP2000 is mounted on a 19-inch shelf, which can be installed
on a standard ETSI ETR 300 119 rack. When the subscriber
quantity increases, System capacity can be expanded simply by
adding extra racks. The total System capacity can support up to
7560 lines of telephone interfaces (equal to 63x4 lines of E1
capacity).
MSAP2000’s universal shelf design allows various user interface
modules to be randomly installed in any one of its 1-16 slots. Its
simple Plug-and-Play design provides flexibility in use, and
Service Providers can simply add-on shelves and modules, as
their subscriber quantity and revenue increases.
MSAP2000 when the total lines are required to expand, the
shelves can be linked with ELM and EPM easily. Each node by
the system design can have one main shelf and up to 8 expansion
shelves. The limitation is based on 1+1 requirement of ELM/EPM
link. That will require up to 16 links. And that will use the all
general user slots.
All MSAP2000 modules are designed as plug-in cards with
ejectors, for easy insertion and extraction. Each interface
module can be hot-plugged or unplugged, without affecting the
ongoing service of other modules.
MSAP2000 supports software upgrade functions for various
modules. Operators can connect to the Local Craft Terminal
(LCT) via RS-232, to upgrade any module in the COT or in the RT.
MSAP2000 simultaneously supports Time Division Multiplexing
(TDM) and Internet Protocol (IP) technologies. With these
functions, an existing system shelf can simply re-orientate its
original 2W FXO and V5.2 PSTN switch interface into new Voice
over IP (VoIP) Softswitch, simply by software upgrade or module
expansion. The original Voice Interface Modules (FXS, FXS-P,
2W/4W E&M) can continue to be used, and the System can be
seamlessly migrated from TDM towards a new IP Network
structure, without additional investments on the Service Provider’s
side.
MSAP2000 Technical Manual V3.0 1-5
1. System Introduction
1.4. Applications and Services
Number Exchanging
Between Stations
CO collocation
Construction
Deferral
Application of
Leased Line
Services
Inter-Trunking
Between Stations
Integration of
ADSL and
Ethernet, for
Broadband
Network Services
MSAP2000 is mainly applied towards Access Networks, to
eliminate restrictions caused by line shortage and transmission
distance. MSAP2000 can also be used for Number Exchanging
between stations, CO collocation, construction deferral, and
Inter-trunking between stations, data transmission, and
broadband network deployment.
When the quantity of phone numbers in Station A is insufficient,
yet there are surplus numbers in Station B, MSAP2000 can allow
numbers to be exchanged between Stations, by long-distance
transmission with optic fibers. This will help Service Providers to
save on redundant investment of numbers.
With copper wires, Exchange Stations can only provide service up
to a maximum of 5 kilometers, which means that exchange
stations will need to be set up at every 5-kilometer radius. With
scarcity of land and high construction costs in mind, this hardly
seems such as a feasible option for Service Providers. With
MSAP2000, 7560 lines of subscribers can be transmitted using
one pair of optic fibers. With optic fiber deployment, exchange
stations will only need to be set up at every 30-kilometer radius,
which will help Service Providers to save tremendously on
construction costs.
For remote or suburban areas, where the subscriber quantity has
not yet reached the economic scale required for the building of
exchange stations, MSAP2000 may be installed in airless
environments or in outdoor cabinets, to substitute as an exchange
station or remote Module. This will help Service Providers to
save on construction cost.
MSAP2000 provides E1, ISDN, G.SHDSL and Nx64Kbps ports
with built-in cross connect functions. Data transmission services
can connect directly to the DDN network, without having to link to
the Exchange Server.
MSAP2000 can serve as an inter-trunk between stations. To
enhance the quality of mobile phone services, Service Providers
are continuously setting up mobile base stations, to increase area
coverage for wireless transmission. All mobile base stations
need to transmit their services back to the Exchange Station to be
processed, but MSAP2000 can serve as an inter-trunk between
Exchange Stations and PSTN Stations, by STM-1 optic
transmission via its E1 port.
Service Providers are facing increasing challenges in the fiercely
competitive field of Telecommunications Services. The need for
integrated voice, data and video services are becoming
increasingly urgent. MSAP2000 presents the ideal solution, by
integrating an array of services, to satisfy diverse customer
requirements at a low cost. A Telecommunications Network
installed with MSAP2000 can provide immediate broadband
services by simply adding an ADSL2/2+, or Ethernet interface
module. This will save on the additional cost towards DSLAM
deployment.
MSAP2000 Technical Manual V3.0 1-6
1. System Introduction
1.5. Testing and maintenance
Testing
Digital line testing
Order wire
MSAP2000 is equipped with testing ability for system diagnostic
and can add testing, MLTM, to execute subscriber’s loop quality
examination. Built-in order-wire provides easy front access at
main shelf for maintenance engineers to communicate when
mobile signal is denied or battery is dried.
MSAP2000 supports analog test with MLTM modules. There are
three stages for these analog test items: stage I, stage II, and
stage III. Below is an illustration that describes how to divide the
whole signal path into these three stages.
Stage I starts from COT backplane connection and ends with
switch interface.
Stage II starts from the analog module at COT and ends with the
corresponding one at RT.
Stage III starts from RT backplane connection and ends with the
customer premise equipment (CPE).
Note that the end connection at both stage I and stage III can be
altered in order to determine which section of the loop is having a
problem.
All testing can be executed, and test result, diagnostic,
conclusion, suggestion, alarm can be displayed in both LCT/UI or
in NMS
Digital modules are all built-in with testing function such as local
loopback, remote loop back, line loopback, inward loopback,
payload loopback, facility loopback, terminal loopback. Testing
function can be executed in LCT or in NMS.
Located at the right bottom of each shelf, the RJ-11 connector on
the main shelf provides point-to-point voice channel among the
COT & RTs. Each node has its own four-digit number for other
node to call in. Build-in ring generator allows the engineer at
the other side to attend to task at hand rather than waiting to see
LED status in deciding if there’s any in-coming call by order wire.
MSAP2000 Technical Manual V3.0 1-7
2. System Architecture
Table of Contents
2. System Architecture..............................................................................................................2-1
2.1. Overview................................................................................................................2-1
2.2. SDH ADM.............................................................. .... .... ........ .... ... .... .... .... .... .... .... .2-2
2.3. NG DLC.................................................................................................................2-3
2.4. E1 Multiplexer............................ .... .... .... .... .... .... ........ .... .... .... .... .... ... .... ........ .... .... .2-5
2.5. IP DSLAM..............................................................................................................2-6
2.6. Gigabit Switch........................................................................ .... .... ... .... ........ .... .... .2-7
2.7. VoIP Gateway........................................................................................................2-8
2.8. Layer 2 Switch.....................................................................................................2-10
2.9. Digital Cross Connect..........................................................................................2-11
2.10. Flexible Topology .............................................................. ..................................2-12
2.11. Local Craft Terminal.............................................................................. ..............2-14
2.12. Network Management System ............................................................................2-15
MSAP2000 Technical Manual V3.0 i
2. System Architecture
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MSAP2000 Technical Manual V3.0 ii
2. System Architecture
2. System Architecture
2.1. Overview
Multiple Elements
on a Single Shelf
Multiservice –
voice, data, video
Network
Management
System (NMS)
Integrated Testing
Functions
MSAP2000 has integrated various COT interfaces on a single
platform (see Figure 2-A), to simultaneously provide Time-Division
Multiplexing network (TDM) services, as well as Internet Protocol
Packet network (IP Packet Network) services. Apart from
traditional TDM services such as SDH ADM, DLC, Digi tal Cross
Connect (DCS), and E1 MUX, MSAP2000 also provides built-in
next generation devices such as IP DSLAM, Gigabit Switch and
VoIP Gateway.
MSAP2000 is an integrated broadband network access platform,
which provides multiple interfaces within one system, to fulfill all
customer requirements. Its user interfaces include:
Analog voice interfaces: FXS, Payphone, 2W/4W E&M
Digital Leased Line interfaces: ISDN BRA/PRA, Nx64 Kbps,
E1, G.SHDSL.
XDSL interfaces: ADSL G.LITE, G.DMT, ADSL2/2+
Ethernet interface: 10/100 Ethernet
Supports LCT (Local Craft Terminal) menu-driven management
interface, as well as OptiCore™’s graphical network management
system. The NMS provides full OAM&P functions such as
system configuration, performance monitoring, fault management,
and security maintenance.
MSAP2000’s Metallic Line Testing Module (MLTM) can assist
installation and maintenance personnel to swiftly pinpoint
loopback status and quality. Besides MLTM, MSAP2000’s
built-in digital testing functions provide testing patterns which
comply with ITU-T O.150 a nd O .15 1, which ca n be us ed to t est f or
MSAP2000 Technical Manual V3.0 2-1
2. System Architecture
error codes in any channel. Not only does this function help
towards network maintenance and problem elimination, it also can
safeguard service quality.
2.2. SDH ADM
Competitive
Benefits
Tributary Interface
1:1 & Ring
Protection
Ethernet over SDH
In a legacy access network infrastructure, the DLC’s COT (central
office terminal) requires an additional SDH optic multiplexer, to be
able to extend the user interface to the DLC RT (remote terminal),
via an optic fiber network. This type of network infrastructure in
which the SDH multiplexer and DLC are separated, will increase
the burden of equipment and maintenance cost born by Service
Providers. MSAP2000’s integrated platform merges the SDH
ADM optic multiplexer and the DLC System within a single shelf,
bringing the following benefits to Service Providers:
Cuts down on the high amount of E1 interfaces normally
required for SDH and DLC connection, which in turn will lower
facility costs.
Integration of SDH and DLC on a common shelf will save
space in COTs and outdoor cabinets.
An integrated NMS can lower operational costs for Service
Providers.
MSAP2000 supports ITU-T G.707 and G.957 standards. 2340
64Kbps Time Slots can be randomly added & dropped, an d up to
63 E1 interfaces are provided. MSAP2000 also supports the
following Tributary Interfaces:
ITU-T G.703 E1 Interface
ITU-T V.35 NX64 Kbps Interface
ITU-T G.SHDSL Interface
ITU-T G.751 E3 Interface
IEEE 802.3 10/100 Ethernet
MSAP2000 supports automatic protection switching (APS) and
1:1 protection switching. Manual or forced switch protection may
also be conducted, and the protection switch time is less than
50ms. Protection switching will not disrupt ongoing voice
services.
MSAP2000 supports Ethernet over SDH (EoS) which conform to
ITU-T G.7041, to provide next generation IP broadband services.
MSAP2000 Technical Manual V3.0 2-2
2. System Architecture
2.3. NG DLC
Inter-trunking
VF Interface to
PSTN
V5.1/V5.2
Topology
As a legacy Digital Loop Carrier (DLC), MSAP2000 uses
European-standard PCM voice digital coding techniques. Each
COT can be linked to 16 RTs, to provide up to 7560 lines of voice
services. MSAP2000 supports interfaces for POTS, Payphones,
2W/4W E&M, ISDN, E1 digital leased lines, Ethernet, and
G.SHDSL. MSAP2000’s capacity can be exp anded by stacking
shelves upon each other, and depending on individual
requirements, its COT/RT can provide up to 16, 30, 60, 120, 240 ,
360, 480, 600, 720, 960, or 1890 lines capacity.
MSAP2000 uses E1 copper lines, STM-1/STM-4 optic fibers, or
externally added microwave devices to serve as the inter-trunk
between COT and RT. Its inter-trunk is equipped with 1+1
Protection, to ensure transmission stability.
MSAP2000 supports connection of 2-wire Voice Frequency (VF)
interfaces to PSTN switches. MSAP2000 adapts 1:1
non-concentrated operation, to ensure that the caller ID is
transmitted to the subscriber’s telephone.
MSAP2000 supports V5.1/V5.2 interfaces which conform to ITU-T
G.964, G.965, TCN 68-185:1999 standards and has passed IOT
test with the following switch: EWSD/hiE9200, NEAX, NEC,
Lucent, Huawei, ZTE, Ecrisson. The protocol supported include:
LAPV5-EF (Envelope Function), LAPV5-DL (Data Link), V5-Link
Control, V5-BCC (Bearer Channel Connection), V5-PSTN,
V5-Control, V5-Protection. Each V5.2 interface can support up to
16 E1 interfaces, and 480 voice ports, with 1:1 concentration
ratio. MSAP2000’s V5.2 Protocol processor is located on its
V5P module. One V5P module simultaneously supports four
V5.2 switch interfaces; meaning that one MSAP2000 system
provides four V5.2 interfaces; this amounts to 63 E1 capacities,
which will support 7560 voice ports. V5P also supports 1:N
functions.
MSAP2000 supports various network topologies, including
Point-to-Point, Point-to-multipoint, Linear, Tree and Branch, and
Ring.
MSAP2000 Technical Manual V3.0 2-3
2. System Architecture
Digital Leased
Lines
ADSL & Ethernet
MSAP2000 provides various service modules for digital leased
lines, such as ITU-T V.35 Nx64 Kbps, ITU-T G.703 E1, G.SHDSL.
In a Fiber+copper wire environment, MSAP2000 AAM supports
ADSL services. In a Fiber+CAT5 environment, MSAP2000
supports 10/100 Ethernet interfaces.
MSAP2000 Technical Manual V3.0 2-4
2. System Architecture
2.4. E1 Multiplexer
Many Service Providers have already adapted SDH as the
backbone of their fiber networks, and are providing E1
transmission interfaces via SDH ADM. Each subscriber has
different bandwidth and interface requirements, so an E1
bandwidth is usually segmented to fulfill different requirements.
Because several subscribers are sharing an E1 bandwidth, an E1
multiplexer will need to be installed at each client end.
MSAP2000 has integrated SDH ADM and E1 Multiplexer onto a
single shelf, which not only conserves space, but will also
standardize network management, and reduce hardware
investment costs. Moreover, MSAP2000 can also function as a
traditional E1 Multiplexer, to provide 2W/41 E&M, ISDN BRI,
Nx64 Kbps, and Fractional E1 services together with the Service
Provider’s existing SDH optic fiber facilities.
MSAP2000 Technical Manual V3.0 2-5
2. System Architecture
2.5. IP DSLAM
IP DSLAM
xDSL Functions
L2 Switch
Features
MSAP2000 supports IP DSLAM functions. The uplink to BBRAS
can be achieved by GbE module through FE or GE interfaces Its
AAM (ADSL Access Module) provides 12 lines of ADSL2/2+; one
shelf provides up to a maximum of 96 ADSL2/2+ interfaces, and a
single shelf supports both POTS and ADSL services. One
MSAP2000 system can provide up to 576 ADSL user interfaces
and 16000 MAC addresses. MAC address can be assigned to
individual port to support MAC anti-spoofing. VLAN setting can be
up to 1024 for PVC, individual port, IP source address and IP
destination. VLAN translation as well as VLAN stacking ar e also
supported. Ethernet bridging is realized by 802 .1d stan dard and
link aggregation is done according to 802.3 a & 802.3.d while flow
control is designed based on 802.3x. STP, RSTP and MSTP are
supported in spanning tree and static IP address can be
supported as long as the setting in BRAS and in CPE are
identical. QoS based on 802.1p can be provisioned for
individual port along with VLAN, IP SA/DA, IP TOC/DSCP
parameters, which allows policing and shaping traffic by port.
DHCP as well as DHCP filtering can be enabled or disabled to
support access control list by order of port, MAC address, and IP
address. Multicast supports bridged mode with IGMP v1/v2
protocol and IGMP snooping enabled. Total number of multicast
group can suppress 256.
MSAP2000’s ADSL Access Module (AAM) supports ADSL
G.LITE, G.DMT, ADSL2, and ADSL2+.
GbE and REoSM/CEoSM can also support Layer 2 switch
functions, including MAC filtering, 802.1q VLAN Tagging,
802.1p QoS with priority queuing, 802.1w RSTP, IGMP v1 & v 2
snooping, DHCP, SNMP v1 & v2 and RMON.
MSAP2000 Technical Manual V3.0 2-6
2. System Architecture
2.6. Gigabit Switch
Layer 2 Switch
Functions
AAM +
Optical Gigabit
Ethernet
Migration towards IP is the future trend of network development.
MSAP2000 has incorporated the Optical Gigabit Ethernet (GbE)
Module, to elevate its optical trunking to 1000 Mbps bandwidth.
GbE’s built-in L2 Switch functions will support new broadband IP
services.
The Ethernet Switch Module (ESM) supports 8 10/100 Mbps
Ethernet interfaces, and provides Packet Switch functions, such
as IEEE802.1d STP, 8021p, Port-based & tag-based VLAN, and
Static MAC address filtering.
The GbE Module supports 16 x 100/1000BaseT Ethernet Links,
and can connect to the AAM Module using the backplane high
speed bus, to form a complete IP DSLAM structure. This module
can support up to 192 lines of ADSL2/2+.
MSAP2000 Technical Manual V3.0 2-7
2. System Architecture
2.7. VoIP Gateway
VoIP Gateway
VoIP Gateway
at COT
Along with the widespread usage of the Internet, VoIP
development has become an inevitable trend. Service Providers
are cutting down on PSTN switch usage, and turning towards
planning and deployment for Softswitch. To fulfill the needs of a
next generation network structure, MSAP2000’s VoIP Gateway
supports VoIP Protocols such as SIP and H.248. MSAP2000
can connect to Softswitch directly through the IP network, to
provide VoIP s ervices. With MSAP2000’s Vo IP Gateway, ther e
will be no problems with transitions from PSTN to Softswitch,
even if the receiving end has not yet been upgraded.
MSAP2000 provides a complete migration Roadmap for CAS,
CCS, and Softswitch, which will fulfill all upgrading requirements
for Service Providers.
Before a VoIP Service Network is fully deployed, Service
Providers will still need to provide TDM DLCs and Switches, for
existing voice clients. After migration to an IP network however,
Service Providers will face severe investment losses, if they opt to
discard TDM DLC, and change their PSTN switches to
Softswitch. MSAP2000 can so lve this pr ob lem by functionin g as
a DLC, eliminating restrictions posed by line shortage, limited
transmission distance, and growing voice service demands.
When Service Providers are ready to transit to Softswitch, all they
need to do is add a Packet Voice Module (PVM) to their alr eady
deployed MSAP2000 COT, and connection to Softswitch can be
established without discarding RTs or any other existing
equipment. MSAP2000 offers a seamless migration solution,
which allows Service Providers to cut down on cost and increase
revenue by retaining 80% of their existing facilities.
MSAP2000 Technical Manual V3.0 2-8
2. System Architecture
VoIP Gateway
at RT
Service Providers with no existing facilities can easily deploy a
brand new next generation IP network. In an overall IP
environment, MSAP2000 can be installed in building basements
to serve as a high density VoIP Gateway, and provide VoIP
services via a FTTB optic network. With GbE, the optical gigabit
interface allows the migration to the NGN network. One
MSAP2000 will serve all units in the building, without any impact
to subscribers.
MSAP2000 Technical Manual V3.0 2-9
2. System Architecture
2.8. Layer 2 Switch
Layer 2 switch
Layer 2 switch
at RT
MSAP2000 can connect to Edge router to provide Ethernet
leased line with the layer 2 switch module ESM.
Service Providers can easily provide FE leased line service with
selectable bandwidth to enterprise in office building without extra
CPE or switch. In an over all IP envir onment, MSAP2000 can be
installed in building basements to serve as a high density Laye r 2
switch, and provide VoIP services via a FTTB optic network.
MSAP2000 Technical Manual V3.0 2-10
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