market scenario & bsnl status · tellabs networking elements, which •offer multiple...
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E2-E3
E&WS MLLN
WELCOME
• This is a presentation for the E2-E3 E & WS
• Module for the Topic: MLLN
• Eligibility: Those who have got the Upgradation to from
E2 to E3.
• This presentation is last updated on 18-3-2011.
• You can also visit the Digital library of BSNL to see this
topic.
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AGENDA
Introduction of Leased line
Over view of MLLN Network
MLLN Architecture
Conventional Leased Line
TVARIT System
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Leased Line – Introduction
1. A leased circuit is a dedicated link provided between two fixed locations for exclusive use of the customer.
2. It is a dedicated point to point line connecting the facilities of a Customer for telephone sets, EPABX,Computers, etc. or for forming a VPN.
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Need for Leased Line
• Connecting geographically spread out locations.
• Dedicated transmission.• Security.• Ease of communication.• Stand by arrangement.• Networking.• Interconnection.
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IMPORTANTANCEOFLEASEDLINES
• Leased circuit provides us high revenue.• Leased circuits serve very important needs of
customers.• Expectations of customers are very high.
They need high Q.O.S. & want to sign SLAs.• In the changing economic environment
dependence of activities on leased circuits is increasing.
• Due to emerging competition rates are bound to go further down with many more new features.
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What is MLLN
• MLLN Stands for Managed Leased Line Network.
• MLLN is a Fully Managed Access Network, which allows the operator to keep an end-to end
• control over the customer circuit and hence provide him guarantees of uptime of the circuit (QoS, SLA’s).
• MLLN is a Next generation Digital Access Network which provides solutions to all the
• Data networking and Voice requirements of the customer.
• MLLN is an Overlay network realized through Tellabs Networking Elements, which
• offer Multiple Value-added and customized services to the customers.
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Segments Addressed by MLLN
• Managed Bandwidth Leased Lines to Alternate Service Providers.
• Paging ,VAS , Cellular, ISP & Value added Service Providers.
• Virtual Private Network (VPN). • Stock exchanges, Banks, MNCs, Publishing
Houses, Software Developers, Broadcasting companies.
• Multi-Service Network for Governance applications , State Wide Networks.
• Enhanced support for legacy applications Hotlines, PABX-IC, Point to Multi-point circuits, ISDN Service extension, Data circuit for Security & Travel applications
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Tellabs 8170 cluster node
Tellabs 8110 NTU
Tellabs 8150 basic node
All elements managed end-to-end by one system:
the Tellabs 8100 network manager
Tellabs 8160
accelerator node A111
Tellabs 8100 Network Elements
Tellabs 8120 mini node
Tellabs 8130 micro node
Tellabs 8140 midi node
MLLN ARCHITECTURE
• MLLN Elements
• DXC (Digital Cross-Connect)
• VMUX (Versatile Multiplexer)
• NTU (Network Terminating Unit)
• NMS (Network Management System)
• (Centralized NMS for the whole network having
main NMS site at Bangalore and the Disaster
Recovery(DR) site at Pune)
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Cluster Node(DXC)
• DXC
• In Master and Slave Configuration
• Modular DACC - 32 to 256 E1’s
• Full management from NMS
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Basic Node(VMUX)
• VMUX
• 3 Types of V-MUX
V-MUX Type-1, V-MUX Type-2 &
V-MUX Type-3 (AC/DC Power)
• Built-in HDSL modem interfaces
• Full management from NMS
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Features of MLLN elements
• NTU
• Wide range
• HDSL Network interfaces
• Different types of CPE interfaces
• Long drive on copper (7 km)
• Full management from NMS
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NMS
• NMS
• Best in the industry
• User friendly GUI
• Open & redundant architecture
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BSNL MLLN NETWORK
• Covering around 600 cities nationwide
• 3 tier architecture of DXCs
• Core network of regional DXCs (R-DXCs) at
Mumbai, Delhi, Kolkatta and Chennai and Sub
Regional (SR-DXCs) at various locations in the
four maintenance regions
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BSNL MLLN NETWORK
• Mesh connectivity between R-DXCs • Mesh connectivity between SR-DXCs of
the same region.• All SR-DXCs connected to R-DXCs.• Major SSAs have been provided with SS
DXCs.• Remote Operator Terminal (ROT) planned
for every station having more than 30 leased circuits.
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DIGITAL CROSS CONNECT (DXC)
Features of DXC
Capacity
DXC (64 ports upgradeable to 128 ports)
DXC (96 ports upgradeable to 128 ports)
DXC (128 ports upgradeable to 256 ports)
DXC (256 ports)
• I/0 cross-connect capability
• Non-Blocking Architecture
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DIGITAL CROSS CONNECT (DXC)
• RedundancyPower SupplySwitching MatrixCross-connect Memory
• Expansion to be made possible by addition of cards only
• Fully Managed from Centralized NMS
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Tellabs 8170 DXC
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VERSATILE MULTIPLEXER (VMUX)
Types of VMUX Cards
V-MUX Type-IA (PFUA-1,OMH-5 ,QMH- 2,XCG-1)
V-MUX Type-IIA (PFUA-1,OMH-2,XCG-1)
V-MUX Type-IIIA (PUA/PFUA-1,OMH-2,XCG-1)
230V AC Powered
-48V DC PoweredExpansion to be made possible on the same chassis by addition of cards.
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VERSATILE MULTIPLEXER (VMUX)
• VMUX to be able to extend hotline circuits.
• Point to point and Point to Multi-point circuit routing are possible.
• HDSL Driving Distance:
3.5km at 2Mbps5 km at 1Mbps7km for 64/128kbps (at 0.5mm dia copper cable)
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VERSATILE MULTIPLEXER (VMUX)
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V-MUXType
Initial Requirement Expansion Requirement (Incremental)
N x 64kbp
s
Hotline
E1 N x 64kbps
Hotline
E1
VMUX Type 1A 40 12 8 4
VMUX Type 2 16 4 8 4
VMUX Type 3
AC/DC
16 4 4 8 4 4
Tellabs 8150-VMUX TPYE-1A
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NETWORK TERMINATION UNIT (NTU)
Features of NTU• Capacity
64/128kbps NTU with V.35 interface64/128kbps NTU with G.703 interfaceN x 64kbps NTU with V.35 interfaceN x 64kbps NTU with G.703 interfaceN x 64kbps NTU with Ethernet Interface
• Line Loop Testing as per ITU-T rec V.54• NTU to send power off signal to the NMS at the
time of NTU getting switched off.
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Types of NTUs with different interfaces
• Tellabs 8110 STU-160/V.35 for 64/128 kbps NTU
with V.35 interface
• Tellabs 8110 STU-160/G.703 for 64/128 kbps NTU
with G.703 interface.
• STU-160 works up to 128kbps
• CTU-S and CTU-R works up to 2Mbps on a single
pair of copper
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Network Terminating Unit (NTU)
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NETWORK MANAGEMENT SYSTEM
• Features of NMS
• (Centralized NMS for the whole network having
main NMS site at Bangalore and the Disaster
Recovery(DR) site at Pune)
• MLLN NMS Billing and Accounting System
• Web Self-care system
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NETWORK MANAGEMENT SYSTEM
• MLLN NMS performs all the management functions on
the network
• Provides complete functionalities
• Supports regional partitioning and VPN capabilities
• Performance Monitoring, Recovery, Reporting Packages
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Conventional Leased Circuits
• Upgradability :In steps 64K, 2M
• Monitoring :No
• Manageability :No
• Testing :Fault localization Lengthy (NFF)
• Coordination Problems :Fault in Modem/ Last mile
• Provisioning :Long (Patching)
• SLA :No
• Bandwidth on Demand :No
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Leased Circuits on MLLN
• Upgradability :In N * 64K
• Monitoring :Yes
• Manageability :Yes
• Testing :Fault localization Faster
• Coordination :No Problem
(Both Modem/ Last mile of BSNL)
• Provisioning :Fast (Config.)
• SLA :Yes
• Bandwidth on Demand :Yes
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MPLS VPN
• Upgradability :In n * 64K (even for non- MLLN)
• Monitoring :Yes (even for non- MLLN)
• Manageability :Yes
Testing :Fault localization Faster
(Monitoring by NOC even for Non- MLLN)
• Coordination :Depends on last mile (MLLN ?)
• Provisioning :Fast (Config.)
• SLA :Yes (even for non- MLLN)
• Bandwidth on Demand :Yes
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MPLS Vs MLLN
• MPLS MLLN
• Security Leased, 100%
• IP based PPP
• QOS ,not 100%assured 100% available
• Shared dedicated
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LEASED CIRCUIT MEDIA
• Leased circuits are available on
Optical Fiber MediaRadio MediaCopper Wire andSatellite Media or aCombination of these media
• Local media and national long distance media are by the BSNL/MTNL and International Mediaby VSNL
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TYPE OF LEASED CIRCUIT SERVICES
1. Speech Circuits (Hot Line or P-Wire) - Local or Long distance circuits within a city or between two different cities provided for the same applicant. The terminating equipment at both ends is telephone without dialing facility. Both way signaling and speech is possible.
2. Data Circuits - Local or Long distance data circuits at different speeds viz. 2.4Kbps,4.8Kbps, 9.6K bps, 64 kbps, nx64 kbps and 2 Mbps.
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TYPE OF LEASED CIRCUIT SERVICES
• Telegraph Circuits:- Local and Long distance
Tele- printer Circuits.
• International Leased Circuits:- Provided through
VSNL.
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TYPE OF LEASED CIRCUIT SERVICES
• Point-to-Point Data Circuits - Local and Long
distance.
• Private Data Network - More than one Local or
Long distance leased circuits.
• converging on a location such that data from one
leased circuit can be transferred automatically to
another leased circuit for the same subscriber.
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What is TVARIT ?
• TVARIT is Sanskrit word for the term “ IMMEDIATE”.
• TVARIT is “ LEASED LINE ONLINE ” provisioning
and upkeep system.
• It is computerized online system, simple to operate &
self explanatory.
• Paperless.
• Reliable, Fast and Instant execution of transactions.
• All the manual activities are computerized.
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NUMBERING SCHEME OF LEASED CIRCUIT
• Every leased circuit will have a number as
• ABCD/JKL/XY/EFGH
WHERE ABCD= originating SDCA code
EFGH= Terminating SDCA code
JKL = Circuit number
XY = Circuit type
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NUMBERING SCHEME OF LEASED CIRCUIT
• For circuit within the same
SDCA,ABCD=EFGH
• For 3 digit code, D= # and H= #
• For 2 digit code, C, D, = # and G, H = #
• For 3 digit SDCA code, for JKL = 000 to 999,
the circuit number will be
ABC#/JKL/XY/EFGH
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NUMBERING SCHEME OF LEASED CIRCUIT
• For the circuit falling between 1000 to 1999 in SDCA with 2
digit code (i.e. JKL = 1000 to 1999),
• Value of D = * & C = # and the circuit number will become
AB#/*JKL/XY/EFGH
• For the circuit falling between 2000 to 2999 in SDCA with 2
digit code (i.e. JKL = 2000 to 2999),
• Value of C = * & D= * and the circuit number will become
AB/**JKL/XY/EFGH
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XY codes of Tvarit
• 11 Speech circuit (with HOT line relay set)
• 12 Speech circuit (on PAX)
• 13 Speech-cum-data circuit
• 14 Voice grade data circuit
• 15 VFT
• 16 64 kbps circuit
• 17 N x 64 kbps circuits
• 18 2 Mbps circuit
• 19 8 Mbps circuit
• 20 34 Mbps circuit
• 21 140 Mbps circuit
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XY codes Tvarit
• 22 STM-1
• 23 STM-4
• 24 STM-16
• 25 STM-64
• 26 R&G copper cable
• 27 R&G OFC cable
• 28 R&G UHF microwave
• 29 Contribution work copper cable
• 30 Contribution work OFC
• 31 Contribution work UHF microwave
• Any additional series code, (XY) will be centrally allotted
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HOW TO ACCESS TVARIT
• TVARIT is accessible by :
• PSTN DIAL-UP ( 022-22670080)
• ISDN DIAL-UP ( 022 –22639280 / 22639310 / 22639340 / 22639420)
• LEASED LINE ( 64 Kbps / 2 Mbps ) (LAN-WAN connectivity)
• Launch Internet explorer
• Write http://10.10.0.1/admin in the address bar
• The home page will be opened
• Enter valid username and password.
• Home page of the user will be opened.
• Carry out the required tasks by following the on-line menus
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Key Features of TVARIT System
• Generation of the standard 13 digit unique number.
• Generation of the Provisional and final demand notes, Advice
notes, Receipts and other general feasibility and channel
allocation reports.
• Generation of Recurring bill.
• Generation of a full fledge Managerial Information Reports (MIS) .
• Current accurate status viewing to all the concern authorities.
• Address change and cancellation of the circuits
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Thanks
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