Trunk Management Software

The NComm SONET Trunk Management Software provides a complete software solution for the implementation of a range of SONET systems. It consists of a set of software modules that perform span configuration, alarming, performance monitoring. The SONET software is completely data driven, allowing operating mode, alarm timers, and thresholds to be configurable on a static or run time basis. Additionally, NComm’s SONET TMS device driver mapping methodology permits potentially many device drivers to appear as one virtual device to the SONET software. The suite includes 2 levels of ANSI-C Application Programming Interfaces (APIs), encapsulating the details of SONET operation and the underlying hardware elements, and provides a clean integration to the target system's operating environment.

• High Bandwidth Data Transport

• VT-n - OC-n Multiplexing & De-multiplexing
  
  

• “Off-the-shelf” SONET interface software providing multiple levels of functionality based on product application
• Supports 1 to N STS-1 spans. Scaling upwards, several STS-1 spans can be multiplexed together to form OC-N’s. Scaling downwards, an STS-1 can be demuxed to up to 7 VT Groups with each group containing either VT1.5’s, VT2’s VT3’s, or VT6’s.
• Polymorphic Device Driver Mapping (PDDM) Methodology allows support for many device drivers.
• Provides full SONET span maintenance and alarming support, with configurable timers and thresholds for alarm detection, loopback activation, and other span conditions.
• Full support for SONET Performance Monitoring per T1.231.
• Supports user choice of framer. Currently supports generic SONET framer, as well as driver support for PMC-Sierra’s Spectra-2488 & TUPP+622. Call for others.
• Runs with or without Real Time Operating System (RTOS) on virtually any processor and host environment. Currently ported to Linux, VxWorks, OSE and Nucleus Plus.
• Simple Application Programming Interfaces (APIs)
• Processor independent ANSI-C source code
• Fully customizable
  

The figure below illustrates the TMS software module architecture. Each software component performs specific functions that represent a part of the total SONET software solution. The SONET-Software API is comprised of a set of ANSI C functions and macros that encapsulate all functionality and data of the SONET-Software. The API provides a clean interface to the SONET-Software simplifying the integration of the SONET-Software to the target application. The target application is implemented on top of the SONET-Software API layer, using the API to access all functionality provided by the SONET-Software.

The SONET Manager Module (SONMM) provide the interface points for administering and configuring any of the STS-1/OC-n spans being controlled by the SONET-Software. The SONMM defines the line interface rate -

OC-1 thru OC-192, structure of the interface—line, path, section & virtual tributaries and alarm conditions definable per type of alarm and per structure of the interface. The SONMM also communicates with the SONPMM for processing performance reports.

The SONET Performance Monitoring Manager Module (SONPMM) will collect performance data

The Device Driver and its associated API provides the interface between the SONET-Software and the driver device. Hardware implementations of OC-n systems and VT-n systems may involve various & mixed devices that access different sub-levels of an OC or STS signal. To accommodate this potential, the SONET Software has a Polymorphic Device Driver Mapping Methodology that permits many device drivers to appear as one virtual device to the SONET Software; this methodology maintains a commonality in general device driver development. The SONET Driver API is comprised of a set of ANSI C functions and macros that handle the interaction with the device driver.

TMS SONET Diagram