The VCL100 STM-1/4 is a modular, and
cost effective STM-1/4 SDH multiplexer equipment designed to manage
bandwidth and voice & data access services over STM networks. The
products are designed to support end-to-end provisioning and
management of services across all segments of the optical network.
It combines innovative optical networking software with the
intelligence of SONET/SDH to deliver a flexible, cost-effective
The VCL100 STM-1/4 provides
flexibility to the customers in terms of expansion to support
additional client interfaces by adding new modules in the field. It
is also a scalable system that enables the customer to start with an
STM-1 network and upgrade to STM-4 as the traffic demand increases.
The distinguishing features of VCL100 STM-1/4 over competing
products are its unprecedented port density, scalability, redundancy
and upgrade-ability with its software intelligence. The VCL100
STM-1/4 family of products can be managed through an integrated NMS
that manages all STM equipment, providing customers with end-to-end
provisioning from a single platform for multiple service types –
from E1s, E3s, STM-1, STM-4, and 10/100Mbps Ethernet services.
The STM-1 / STM-4 can be managed
through an integrated NMS that manages all the 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.
STM-1/4 Network Element Software
The VCL100 STM-1/4 node is managed
through the embedded NES (Network Element Software). The main
capabilities of NES are listed below:
- Switchover to
redundant processor, power supply, cross-connect and aggregate
cards, in the event of any hardware fault.
Recovery after Input Power Failure in a redundant system.
Operations & Maintenance.
programmable severity levels for Alarms.
- Node-wise Alarming
& Remote Login.
monitoring as per the standard specifications (G.826).
monitoring of E1 tributaries.
User can access and control all of
the above-mentioned features using a standard HTTP based web browser
by enabling the Web server software module (NES-WEB-HTTP) within the
Network Element Software. The Ethernet interface on the MIC
(Management Interface Card) is to be used as the physical data
connection for this purpose. NES also allows users to control remote
nodes using SDH DCC bytes by enabling the in-band communication
To provide network wide
management and control of VCL100 STM-1/4 nodes through industry
standard Network Management Systems, users can enable the Simple
Network Management Protocol interface software module (NES-SNMP).
This module provides open interfaces which can be also be used by
Network Management System (NMS) which is described later in this
10/100 Mbps half-duplex
LAN interface for NMS data connection to VCL100 STM-1/4 node (RJ45
connector) RS232C Craft interface for local Command Line Interface
data connection 2 wire analog telephone interface for Engineering
Order Wire (E1 or E2 bytes access) with omnibus calling In-band
control channel supported for remote management (F2 & F3 bytes used
VCL100 STM-1/4 supports
hitless upgrade from STM-1 to STM-4 by replacing the redundant STM-1
aggregate by STM-4 aggregate.