Application Diagram for STM-1 (upto 28 E1)

STM-1, VCL100LT Applications

STM-1 Add-Drop Multiplexer

This configuration is used whenever VCL100LT is part of a ring or a linear chain. The box will be configured with two STM-1 optical interfaces (East and West) with E1 drop interfaces. VC-3 and VC-12 level path protection can be offered using SNCP.

Add-Drop Multiplexer

STM-1 Terminal Multiplexer

In a terminal multiplexer configuration, only one STM-1 optical interface is used in an unprotected set up. This is the case when VCL100LT is either used as a spur or at the end of a linear segment. If 1+1 MSP is also provisioned, an additional STM-1 optical interface is required on VCL100LT.

Terminal Multiplexer

Network Applications

VCL100LT is fully compatible with other members of the VCL100LT family viz., VCL100LT SDH Access Node (STM-I/4), VCL100 Cross-connect Node (STM-I/4) and VCL100 Multi-Service Provisioning Platform (STM-l/4). It can therefore be seamlessly used in an end-to-end network configuration from the customer premises to the optical core.

The following figure shows a STM-4 network built using VCL100 Multi-Service Provisioning Platforms with low drop requirements at a couple of locations. These requirements can be cost-effectively addressed by using a VCL100.

Mixed Network Solution

With an increase in demand for Ethernet based data services such as Internet access and Transparent LAN applications, VCL100 is the right kind of product to meet such data requirements as shown in the following figure. This shows a hubbed ring configuration, which is typical of an Internet Access application.

VCL100 MSPP, which supports an 8-port Ethernet Card, is positioned at the hub node and would interface to the Gateway Router. VCL100, on the other hand provides data connectivity to the end-user, at the customer premises.

Data Services

VCL100 on its own may also be used to build low-speed transport networks as is shown below.

Low-Speed Backbone

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