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|   STM-4 (upto 252 E1) - NES   |

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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 network solution.

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.

VCL100 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.
  • Auto Recovery after Input Power Failure in a redundant system.
  • Node-wise Operations & Maintenance.
  • User programmable severity levels for Alarms.
  • Node-wise Alarming & Remote Login.
  • Performance monitoring as per the standard specifications (G.826).
  • In-service 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 module (NES-IBC).

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 document.

Operations Interfaces

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 from POH).


VCL100 STM-1/4 supports hitless upgrade from STM-1 to STM-4 by replacing the redundant STM-1 aggregate by STM-4 aggregate.

Others Links:

  STM SDH Multiplexers
  E1 VoIP-GSM Gateways
  VoIP SS7 and C7 Solution
  Echo Cancellers and VQE Solutions
  GSM Gateways / GSM Channel Banks
  E1 and T1 over Ethernet (TDM over IP)
  Digital Access Cross Connect Switch (DACS)
  E1, T1, E3, DS3, Ethernet Converter (IP over TDM)

Technical specifications are subject to change without notice.
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