Managing the PSTN Transformation : A Blueprint for a Successful Migration to IP-Based Networks book cover
1st Edition

Managing the PSTN Transformation
A Blueprint for a Successful Migration to IP-Based Networks

ISBN 9781498701037
Published January 15, 2015 by CRC Press
235 Pages - 77 B/W Illustrations

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Book Description

While there are many scholarly books and papers that cover the technical issues behind the public switched telephone network (PSTN) migration, few books describe exactly how to manage the migration process economically. Filling this need, Managing the PSTN Transformation: A Blueprint for a Successful Migration to IP-Based Networks reflects the latest understanding of the challenges behind migrating customers from the old PSTN network to an IP infrastructure.

The IP transformation blueprint described in this book is not a theoretical cookbook that describes how this could work. Instead, the book presents a blueprint that is the product of countless hours of work by hundreds of individuals at Deutsche Telekom (DT) over almost two years.

The book presents insights gained as the DT team migrated the entire public switched telephone network in Macedonia to an Internet protocol-based platform. It illustrates the various types of challenges the team faced in integrating complex systems, including flight control at their airports, alarms for fire and police response, and large enterprise customers.

Detailing new conceptual approaches and the best practices developed for ensuring knowledge transfer within the DT group, the book presents the information in a step-by-step manner to enable you to easily adapt the blueprint for particular service provider requirements. Since successful migration relies on key aspects beyond the technological side, this work provides you with a product portfolio roadmap, migration plan, IT roadmap, business case framework, and a go-to-market plan.

Although the book discusses the experiences of the Deutsche Telekom team as they worked to migrate the telephone network in Macedonia to an Internet protocol-based platform, the IP transformation blueprint and lessons learned presented can easily be scaled up and applied to any market around the world.

Table of Contents

Overarching Topics
The PSTN Migration Process and Interdependencies
Project Structure Organization
     Project Structure, Roles, and Responsibilities
Environmental Status Quo 
     External Factors 
     Internal Factors
Scenario Analysis 
     Interim Solutions 
     Full Migration 
     Combined Approach (on Area Level)
Standard Mandatory and Optional KPIs
Risk Analysis 
     Project Internal Risks 
     Deutsche Telekom AG/NatCo Risks (Micro Environment) 17
     Eco System Risks (Macro Environment)
End-to-End (E2E) Process 
     Adjustment in E2E Processes 
          Processes without Major Changes
          Processes with Incremental Changes 
          New Processes 
     Complete E2E Process for PSTN Migration

Migration Plan

Product Development Sequencing
     Sequencing Framework for Product Development
     Prioritization Criteria and Rationale for Niche Products
Migration Strategy (Including Phases and Types) 
     Assess Migration Phases
     Migration Phases—Timing Guidelines and Key Learning
     Assess Migration Types 
          List of Migration Types 
     Define the Migration Strategy per Segment/Product and Derive the Related Costs 
          Framework Migration Strategy for Each Segment/Product Including Unit Cost per Migration by Segment/Product
     Migration Strategy per NatCo
Migration Sequencing—Product Sequencing 
     Prioritization Logic for Product Sequencing 
     Prioritization Logic with Criteria and Rationale for Niche Products
Migration Sequencing—Area Sequencing 
     Area Evaluation 
     Area Sequencing Approach

Product Portfolio Roadmap

Information Collection 
     A Collection List of the Complete Current Features/Product Catalogue/Terminal Equipment 
          IP Migration of ISDN—ISDN Features Missing in IMS 
     Preparation of a Regulatory Checklist 
          List of Regulatory-Required Features
          List of Further Regulatory Requirements and Impacts 
     Identification of Technically Available Features 
     Matching of Current Features to Available IP Features 
          Framework for Matching Features and Drawing Conclusions about Features
Analysis and Selection of Features
     Identification of Feature Benefits 
          Evaluation Approach for Feature Benefits 
     Calculation of Costs/Resources for Features in Discussion 
     Evaluation of Features 
          Evaluation Framework for the Selection of Features 
     Retirement of Features
Product Definition 
     Feature Mapping to the Existing Portfolio 
     Substitute Product Definition 
          Factors Impacting Decisions on the Product Portfolio Definition 
     Announcement to NRA and Changing of T&C and Submission of RO
          Checklist for Potential Regulator Approval and Best Practices on T&C
Realization of the New Portfolio 
     Prioritization of Development and Launch Sequence 
     Planning of Launch and Execution
Commercial Opportunities in B2B and B2C during and after Migration

NT/ IT Roadmap
Target Architecture and Technical Product Development 
     Target Architecture 
          Collection and Comparison of Network Strategy Documents 
     Technical Product Development—Information Preparation 
          End-to-End Technical Solution for Basic Voice Service
          Preparing a List of Available Technical IP-Based Features 
          Identification of Differences in Service Ergonomics Due to the Introduction of IP 
     Technical Product Development—Technical Product Design 
          Assessment of Current Status of Network/Platform Resources 
          Preparation of the TCO and Technical Solution Documents
     Technical Product Development—Product Implementation 
          Start of Technical Product Development Implementation
          Integration of New Platforms or Extension of Existing Platforms, Quality Control, and Handover
NT Rollout 
     Network and Technical Product Readiness 
          Definition of the Migration Enabler 
          Major Network Deployment Plans 
     Internal Resources Preparation and Planning
IT Roadmap 
     IT Application and Product Readiness 
          Identification of Required Changes to IT Applications 
          Adaptation of Existing IT Systems/Development of New IT Systems 
          Adaptation of Interfaces toward the Network 
         Customer Migration Process within IT 
          Development of the Migration Process 
          Development of All Regular Processes 
          Enable Migration Reporting
Interdependencies with Other General Projects 
     Identification of Interdependencies with the Current IT/NT Corporate Projects 
          Identification of Interdependencies with Current IT/Corporate Projects
Evolution of the Network from Legacy (PSTN/ISDN) to the New IP Platform

Business Case Framework

Calculation Methods 
     Calculation Rules 
     Scope of Business Case Items 
     Financial Impact Calculation
Project Assumptions 
     Scenario Definition 
     Input Need from Work Streams 
          Milestones of Business Case Calculation 
          Input for the Migration Scenario 
          Input for Interim Solutions
Business Case Structure 
     Revenue and Cost Base and Business Case Baseline

Go to Market

Communication Plan 
     Communication Strategy (Including Benefit Story) 
     Communication Plan 
          External Communication 
          Internal Communication
Sales Channel Plan 
     Steering and Orchestrating the Sales Channels 
          Preferred Sales Channels as Customer Touch Points 
          Channel Focus per Migration Phase 
     Cross-Sell, Upsell, and Retention 
     Sales Force Training 
     Key Account Manager (KAM) Training
     General "All-Employee" Training
Migration Support Customer Care and Technical Service 
     Involvement of Customer Care and Technical Service in the PSTN Migration Process 
     Planning of Demand Volume


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Sandra Dornheim is project manager at Deutsche Telekom, Europe and Technology, with a focus on go-to-market and launch management. Over the past two years she was responsible for the go-to-market work stream within the IP transformation and PSTN migration initiative at Deutsche Telekom. After graduating with a master’s degree at the University of Mainz (Germany) in business and economics, she started working for Deutsche Telekom. She has 11 years of telecommunication experience within different organizations and projects, however, her focus has always been on marketing and sales. She completed her second master’s of science degree in strategic marketing leadership at the Henley Business School in the United Kingdom.