STM-1 Add-Drop Multiplexer: STM-1, VCL100CPE Applications
This configuration is used whenever VCL100CPE 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.
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 VCL100CPE 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 VCL100CPE.
VCL100CPE is fully compatible with other members of the VCL100CPE family viz., VCL100CPE 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 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.
VCL100 on its own may also be used to build low-speed transport networks as is shown below.
This unique product supports end-to-end provisioning and management of voice and data services across all the segments of the optical network - from the customer premises to the core. It combines innovative optical networking software with the intelligence of SDH to deliver a flexible solution to today's service providers. The VCL100CPE can be configured as a Terminal Multiplexer (TMUX) or an Add-Drop Multiplexer (ADM), with E1, E3, DS3 or 10/100 Ethernet Interface service interfaces and trunk interfaces at STM-1 rate.
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