E1-
E1-E2 (EB)
Managed Leased Line Network
(MLLN)
For internal circulation of BSNL only
WELCOME
This is a presentation for the E1-E2 Enterprise
Business
Module for the Topic:MLLN
This presentation is last updated on 18-3-2011.
You can also visit the Digital library of BSNL to see
this topic.
For internal circulation of BSNL only
WHY MLLN
Drawback Of Traditional Leased Line Circuits
Data Cards support only upto 64 Kbps
Equipments are Vendor dependant
No Centralized Monitoring
For internal circulation of BSNL only
AGENDA
WHY MLLN?
MLLN Features
MLLN Advantages
Application Of MLLN
Key Elements OF MLLN
MLLN Nodes
Different Nodes Used in MLLN
For internal circulation of BSNL only
MLLN Features
MLLN is an integrated, fully managed , multi
service digital network platform
Using NMS, MLLN can provide high speed
Leased Line with improved
QoS
High availability & reliability.
Al operations & maintenance is carried out
through ROT (Remote Operating Terminal)
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MLLN Features
NMS supports service provisioning, Network
optimization, planning & service monitoring.
End to end circuit creation and modification,
circuit loop testing & fault isolation.
Automatic rerouting of traffic
software programmability of NTU.
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MLLN FOR WHOM
Banking
Financial institution
Stock market
paper industry,
Broadcasting & Internet service
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MLLN Advantages:
24 hrs Performance Monitoring of the circuit
Circuit fault reports generated proactively
On Demand the Bandwidth can be increased.
Low lead time for new circuit provisioning.
Protection against the failure of the circuit
Long drive on single copper pair.( for 64 kbps – 7 kms &
for 2mbps – 3.5 kms)
Centrally managed from ROT connected to the NMS
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Application Of MLLN
Corporate high speed internet access through
Broadband.
LAN interconnection.
Hotline connectivity for voice.
Point to point connection for data circuit
point to multipoint connection.
EPABX Interconnection.
VPN on MLLN Network.
Extension of VPN (MPLS) to Customer
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Key Elements OF MLLN
MLLN Nodes
Servers
Workstations
Networking Equipment
Others (Printers, UPS etc)
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MLLN Nodes
DXC (Digital Cross-Connect)
VMUX (Versatile Multiplexer)
NTU (Network Terminating Unit)
NMS (Network Management System)
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Servers
Database Server
NMS Application Servers
Billing and Accounting Servers
Web Self Care Servers
Proxy Servers
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Workstations
• Local Operator Terminals
• Remote Operator Terminals
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Networking Equipment
• Router
• LAN Switch
• RAS
• Firewall
• Remote Operator Terminal Connectivity Equipment
• Grooming Mux at Main and DR Sites
• Connectivity equipments at Remote Sites
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Others
• Un-interrupted power supply
• Printers
• Messaging System
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Network Architecture
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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)
1/0 cross-connect capability
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Redundancy
Power Supply
Switching Matrix
Cross-connect Memory
Expansion to be made possible by add
Fully Managed from Centralized NMS
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VMUX
VMUX to be able to extend hotline circuits
Point to point and Point to Multi-point circuit routing
should be possible
HDSL Driving Distance:
3.5km at 2Mbps
5 km at 1Mbps
7km for 64/128kbps (at 0.5mm dia copper cable
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NTU (Network Terminating Unit)
Capacity
– • 64/128kbps NTU with V.35
– • 64/128kbps NTU with G.703
– • N x 64kbps NTU with V.35
– • N x 64kbps NTU with G.703
– • N x 64kbps NTU with Ethernet Interface
– • Line Loop Testing as per ITU-T Rec V.54
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NTU (Network Terminating Unit)
64kbps NTU to work up to 128kbps
N x 64kbps NTU to work up to 2Mbps
NTU to send power off signal to the NMS at the time of
NTU getting switched off.
STU-160 works up to 128kbps
CTU-S and CTU-R works up to 2Mbps on a single pair of
copper
All NTU’s support V.54 line loop testing and support
dying gasp to send power off signal at time of power off
condition.
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NMS (Network Management System)
MLLN NMS
Billing and Accounting System
Web Self-care system
We have offered Tellabs Network Manager Release 13
to meet the requirements
MLLN NMS performs all the management functions on
the network
Supports regional partitioning and VPN capabilities
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NMS (Network Management System)
Offered Performance Monitoring, Recovery, Reporting
Packages
Offered HP Open view and Cisco works which would
reside on SNMP server for managing the servers and IT
elements
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Network Plan
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Different Nodes Used in MLLN
Cluster Node
Basic Node
Midi Node
Mini Node
Micro node
Accelerator Node
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For internal circulation of BSNL only
