STS1 Broadband Module Set
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Features
- Deploy Local Switching Deeper into the Fiber Access Network
- Performance Monitoring for Traffic Across ILEC/CLEC/IXC Boundaries
- Alternative to Unmanaged M13s
- Direct DS0/DS1 Access to High Order SONET Muxes
- DS3 to STS-1 Conversion for CO Switches
- Eliminates Back-to-Back M13 Add/Drops
Introduction
The STS-1 Broadband Module provides a direct interface from the DNX to SONET add/drop multiplexers (ADM), other cross-connect systems, or directly to central office switches with integral STS-1 or DS3 ports. STS-1 Modules support up to 28 Virtual Tributaries (VT1.5s).
Capabilities and Features
The STS-1 Module simplifies provisioning and eliminates DS1 wiring and panels between CLEC/IXC networks. It provides DS1-level grooming at various locations in a SONET network, enabling the DNX to handle a payload that enhances the carriers add/drop capabilities and optimizes bandwidth available on the SONET ring.
The STS-1 Module overcomes maintenance and diagnostic challenges at the carrier handoff. Since most network operators have SONET and Element Management Systems, they can now accurately identify problems beyond the handoff down to the DS1/VT level, as opposed to the DS3 level only.
Benefits
The STS-1 Module enables network operators to continue to utilize the cross-connect, test, and access concentration capabilities of the DNX platform, while simplifying overall provisioning. SONET standards compliance contributes to improved service levels via SONET performance monitoring, providing greater visibility into customer traffic as it crosses CLEC/ILEC/IXC boundaries.
Applications
The following diagrams illustrate three of the most common applications where the STS-1 Module would be used. The first shows the DNX collecting DS1s from various SONET ADMs around the network. In this application, the STS-1 Module consolidates all traffic from multiple locations, reducing equipment cost when compared to multiple DS1s. The pair of M13s contrasts with the flexibility provided by a single DNX.
Consolidating Traffic from Multiple Locations
In a classic transmux application, the DNX consolidates DS1 traffic and performs the conversion to DS3 for the handoff between carriers. By converting the DS1 with the DS3 structure to a VT1.5 format, bandwidth can be more efficiently utilized on the optical ring. The DNX also goes beyond the classical transmux application by incorporating grooming, allowing DS1 traffic to be converted and consolidated onto a single STS-1 interface from multiple fractional DS3s, ensuring that no bandwidth is stranded at a handoff location.
STS-1 to DS3 Transmux
The final diagram depicts the DNX consolidating fractional and partially filled facilities such as STS-1, DS3, and DS1 for handoff to other networks.
Fractional Services Consolidation
