Kundan Misra

Dynamic Modification of System Structures Using LLPNs

In this paper we aim to set up a framework for object Petri net semantics, allowing the modification of object net structures at run-time. The approach uses linear logic Petri nets (LLPNs) and performs the structure modification on a linear logic encoding of the object net. In addition, Valk’s self-modifying Petri nets are shown to be subsumed by LLPNs.

Implementing Service Level Management

Service level management (SLM) is the managing of various phases in the entire lifecycle of a telecom service. SLM is also sometimes referred to as total service level management.

Controller synthesis for object Petri nets

A large class of real-world systems can be modelled as Petri nets, and complex systems are more conveniently modelled as object Petri nets. Ensuring that Petri net models avoid forbidden states has attracted much research effort. The work presented addresses the forbidden state problem for object Petri nets, through a method for controller synthesis. A simple illustrative example is given as well as an illustration in a flexible manufacturing system. The concept of place invariants plays an important role in Petri net theory. For the first time, place invariants are defined for object Petri nets.

Network Inventory Management

Telecom network inventory is slightly different from inventory in the “bricks-and-mortar” world. When one thinks about physical inventory, one generally considers that the inventory itself has intrinsic value that can be realised by its sale. For example, if a Parisian patisserie has 1000 croissants in inventory, then by selling those croissants their value is realised. A service provider does not realise the value in the ir network by selling the network itself. Rather, the service provider sells capacity in the network’s traffic-carrying capability. Thus, physical network inventory needs to be managed primarily for maintenance and for usage accounting purposes. Usage accounting is necessary for billing. On the other hand, a bakery must manage its physical inventory to realise optimally the value in its capital, which includes raw materials, baking oven and other requirements. In short, the physical inventory in a telecom network is a capital good that is not offered for sale as part of the service provider’s day-to-day business operations. Only the service-carrying capacity of the physical network is offered for sale in day-to-day business.

Network Management Using SNMP

The Simple Network Management Protocol (SNMP) is a protocol designed for communicating with network elements, such as switches and multiplexers, and for managing their operation. Managing a network element includes detecting and diagnosing faults, provisioning capacity, activating service and suspending and re-activating service.

Telemanagement Forum: eTOM

The Extended Telecom Operations Map™ (eTOM) is a business process framework which places the service provider’s enterprise within its overall business context. In addition to the operating processes involved in delivering telecom services, the wider enterprise of the service provider and its business interactions along with its relationships to other organizations are represented. Moreover, the eTOM describes the processes and interfaces that are required to insert the service provider’s business into an e-business or e-commerce setting.

Service Provisioning and Activation

Telecom service provisioning is the making available of resources necessary for a service by allocating those resources in a carrier’s network. Service activation is the switching on — or “going live” — of the service. Service provisioning comprises a range of activities and these must be carried out in the correct sequence.

Network Management OSS Overview

Operations and maintenance (O&M)preceded modern operational support systems (OSS) software and its associated network management model. O&M referred to control and supervision of telecom networks. O&M has now developed to the extent that it is included under the head of network management, which is broader than merely control and supervision. It also includes fault management, traffic management, service provisioning and service management.

Network Management Using Telnet/CLI and TL1

Command Line Interface (CLI) has traditionally been an essential interface to any network device making CLI the de facto interface for communication with devices via a serial port. Typically, a terminal would be connected to serial ports for monitoring device status, for diagnostic commands to isolate the hardware problems or for recording and notifying of alarms.

ATM Network Management — The ATM Forum Model

Asynchronous transfer mode (ATM) is a cell-based transmission or transport technology. Cell-based means that information is carried in packages (or “cells”) of some particular size. Transmission or transport is the carrying of information through a telecom network from a sender to a receiver. ATM works by setting up a connection between the endpoints for the duration of a communication session. It emerged with the aim of becoming the basic infrastructure for all broadband communications. ATM integrates essential features, such as QoS and traffic loss prioritisation. ATM scales to very large telecom networks without a loss in quality. The scalability of ATM along with its widespread implementation has made it a “future-proof” option for telecom network infrastructure.