Network Management Systems (NMS) Features Quiz

MLLN NMS Overview

• Network Management System (NMS) designed for MLLN (Multi-Layer Laser Network).
• Tellabs Network Manager Release 13 is utilized to fulfill MLLN NMS requirements.
• Supports regional partitioning and Virtual Private Network (VPN) capabilities.

Network Monitoring and Management Features

• Performance monitoring includes uptime statistics and reasons for downtime.
• Proactively generates circuit fault reports for timely detection and rectification.
• On-demand bandwidth increases without modifying existing hardware.
• Rapid circuit provisioning with low lead time for new service creation.
• Circuit failure protection provided via automatic or manual recovery management.

Node Types and Capacities

• Nodes function as digital multiplexers with various trunk and channel interfaces.
• Cluster nodes serve as high-capacity cross-connect devices; expandable without interrupting traffic.
• Basic nodes and midi nodes are flexible multiplexers; support customer access for tributary port capacity.
• Mini nodes serve as low-capacity access multiplexers for smaller configurations.

VMUX Configurations

• VMUX (Virtual Multiplexer) types include Type I, II, and III with specific configurations:
  • VMUX Type I supports 32 N*64 kbps E1 Links.
  • VMUX Type II supports 16 N*64 kbps E1 Links.
  • VMUX Type III handles 8 N*64 kbps E1 Links.
• Expansion possible via adding cards to the same chassis.

HDSL and NTU Specifications

• HDSL driving distances for different bandwidths:
  • 3.5 km at 2 Mbps
  • 5 km at 1 Mbps
  • 7 km for 64/128 kbps (utilizing 0.5 mm diameter copper cable).
• Network Terminating Units (NTUs) provide various connection capacities (64/128 kbps, N x 64 kbps).
• All NTUs support ITU-T Rec V.54 line loop testing with power-off signaling capabilities.

Accelerator and Micro Nodes

• Accelerator Node A111 integrates PDH and SDH technologies; supports STM-1 interface.
• Micro nodes function as small capacity cross-connections, particularly in mobile networks.

Cluster Node Specifications

• Built on a master-slave architecture with a master sub rack and 1 to 8 slave sub racks.
• Each slave sub rack can be single, double, or midi sized; total cross-connect port capacity reaches 512 Mbit/s.
• Cluster node facilitates cross-connect at TS (64 kbit/s) levels and is capable of structural expansion.

Application of MLLN

• Provides corporate high-speed internet access and various connectivity solutions, including:
  • Broadband and LAN interconnections.
  • Voice hotline connectivity.
  • Point-to-point and point-to-multipoint connections.
• Fully centralized management through the Network Management System.