STM-1 (upto 63 E1)

Introduction

The VCL100MC-1 (upto 63 E1) STM-1 is a compact, modular, and cost effective STM-1 SDH multiplexer equipment designed to manage bandwidth and provide E1 or fractional E1, voice and data access service over STM Networks. It is customized for the traffic demands, in the access network, typical of residential or business customers.
The product supports end-to-end provisioning and management of services across all the segments of the optical network. It combines innovative optical networking software with the intelligence of SONET/SDH to deliver a flexible, cost-effective network solution.

VCL100MC-1(upto 63 E1) STM-1 is a compact 3U height Multi-Card Chassis System that provides flexibility to the customers in terms of expansion to support additional client interfaces by adding new modules in the field.

The system has two STM-1 optical/electrical interfaces in the aggregate side and allows for upto 3 tributary add-on cards. The following tributaries are available as add-on cards for the chasis:

28 E1/DS3 tributaries (software configurable as E1 or DS1)
1 E3/DS3 tributaries (software configurable as E3 or DS3)
8 port 10/100Base-T Ethernet (IEEE 802.3)
2xSTM-1o
2xSTM-1e/140Mbps tributary interfaces (software configurable)

Additionally it provides a single 10/100Base-T Ethernet port, which can be mapped to one VC-12 bandwidth towards the aggregate side. This feature does not use any tributary slot and hence can supplement E1/DS1/E3/DS3 customers requiring a single Ethernet interface. This Ethernet interface on the base card is optional. The STM-1 / STM-4 can be managed through an integrated NMS that manages all Valiant equipment, providing customers with end-to-end provisioning from a single platform for multiple service types - from E1/DS1s, E3/DS3s, E4/STM-1e, STM-1o and 10/100Mbps Ethernet services.

Features

Next generation access SDH multiplexers to provide multi-service solutions at the edge.
Support for both TDM and data traffic services.
Flexible set of configurations to meet customer's different service requirements.
Brings the power of Intelligent Optical Networking from core to access.
VCL100MC-1 STM-1 Multiplexer with:

Add/Drop, Terminal Multiplexer, Crossconnect and Regenerator configurations

E1/DS1, E3/DS3, STM-1e / 140 Mbps and 10/100 Mbps Ethernet tributaries

Built-in cross-connect capabilities at VC-12 and VC-3 granularity

Support for AU-3 and AU-4 mapping

Rate adaptive Ethernet services for easy control of bandwidth with 2Mbps granularity.

Supports MSP and SNCP protection.
"Point-and-click provisioning" of E1/DS1, E3/DS3, E4, STM-1 and 10/100 Ethernet Interfaces for ease of management.
Optional hardware redundancy for power supply.

Redundancy and Protection

Redundancy

Optional redundant power supply card, operating as hot-standby and non-traffic affecting
Hot insertion of tributary cards supported, with automatic synchronization of timing, data and provisioning information between redundant cards.
Software redundancy for terminating and restarting critical processes with no service disruption.

Protection mechanisms

1+1 Line Protection Switching (MSP as per G.783)
VC-12 and VC-3 Path Protection Switching (LO/HO SNC as per G.841 8)

Ethernet Support on VCL100MC-1

This section details the support for transport of Ethernet on SDH as offered on VCL100MC-1 and discusses some of its salient features.

Some of the salient features of the Ethernet transport support on VCL100MC-1 are:

Physical Interfaces - The Ethernet tributary card (ETC) supports 10/100 BaseT physical interfaces. The interfaces support auto-sensing and auto-negotiation to detect flow control and line rate capabilities.
Bandwidth granularity - VCL100MC-1 provides the flexibility to provide granularities from say 2 Mbps all the way to maximum limit of the physical interface, for instance 10 Mbps or 100 Mbps. The exact user demand is software provisionable in increments of 2 Mbps. This feature provides the service provider numerous price points, and on the other hand it benefits service provider's customers by allowing them to "pay as you need" without a change in hardware.
SLA - Subscribers connected to a service provider via VCL100MC-1 would be able to obtain Guaranteed Bit Rates (GBR) and Maximum Burst Rates (MBR) that provide specific bandwidth guarantees instead of a "best efforts" service. The SLA parameters would be software provisionable and could be changed by the network operator based on individual SLAs.
Enhanced Reliability - Since Ethernet is transported over SDH, robust SDH protection mechanisms ensure high reliability.
Transparent LAN Services (TLS) - VCL100MC-1 with the Ethernet tributary card allows geographically separated LAN or VLANs to be interconnected.

ETC is source of increased revenue for the service provider, and at the same time reduces the cost of connection per customer

VCL100MC-1 Differentiators

Software Differentiators

Software forms the core of the VCL100MC-1 platform. Its intelligence enables the VCL100MC-1 products to instantly provision, route, protect, restore, and manage end-to-end circuits.

The point-and-click provisioning tool (PNCP) is a set of software modules that enables customers to provision end-end circuits is a network that comprises all Valiant family of SDH products. Users can enable this feature using the node-resident software module NES-NODE-PNCP, and the server resident software module NES-HOST-PNCP.

Some of the highlights of the VCL100MC-1 are the following software features:

Automatic Topology Discovery
VCL100MC-1 has the ability to automatically discover nodes and trunks within the optical domain, and then intelligently provision the circuit accordingly. This eliminates cumbersome operator intervention and substantially reduces costs.

Multi-level Protection Schemes
VCL100MC-1 supports the protection schemes for maximum availability. These include line and path level protection schemes like 1+1 MSP with uni/bi-directional switching and SNCP/I. VCL100MC-1 also complies the ITU requirement of MSP and SNCP protection switching times to be within 50 msec. Programmable "Wait to Restore (WTR)" times enable service providers to fine tune circuit restoration times to working path, based on confidence levels.

Ethernet over SDH
VCL100MC-1 can map Ethernet interfaces, at configurable data rates in increments of E1 starting from 1 E1, directly into SONET/SDH payloads for transport through the optical network. Mapping is performed in a standardized way as per recent ITU-T specifications. Both ITU-T X.86 (LAPS) and G.7041 (GFP) standards are supported.

End-to-End provisioning
VCL100MC-1 can enable a point-and-click provisioning of E1 level circuits end-to-end, from the access right to the core of an optical network.

Hardware Differentiators

These are some of the hardware differentiators of VCL100MC-1:

Space Efficiency
VCL100MC-1 is one of the most compact STM-1 products available in the market, with a 84 E1 capacity drop
Modularity and Scalability
VCL100MC-1 is a highly modular product adhering to the "pay as you grow" philosophy. This is achieved by providing designing modular cards, which would enable the customers to start small and grow as traffic demands scale.
Diverse Topology Support
VCL100MC-1 can support diverse topologies like point-to-point, linear and ring with bandwidth-efficient protection mechanisms

Related Links

Aries Telecom
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Website: http://www.ariestelecom.com

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