Broadband Telecommunications Handbook

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Broadband Telecommunications Handbook


Broadband Telecommunications Handbook, Second Edition………………………………………………1


Chapter 1: Introduction to Telecommunications Concepts………………………………………………….5


Overview………………………………………………………………………………………………………………….5


Basic Telecommunications Systems……………………………………………………………………………6


Components of the Telecommunications Networks……………………………………………………….7


Communications Network Architectures……………………………………………………………………….8


The Local Loop…………………………………………………………………………………………………………9


The Movement Toward Fiberoptic Networks…………………………………………………………………9


Digital Transfer Systems………………………………………………………………………………………….11


The Intelligent Networks of Tomorrow………………………………………………………………………..11


Summary………………………………………………………………………………………………………………..12


Chapter 2: Telecommunications Systems…………………………………………………………………………14


Overview………………………………………………………………………………………………………………..14


What Constitutes a Telecommunications System………………………………………………………..14


A Topology of Connections Is Used…………………………………………………………………………..15


The Local Loop……………………………………………………………………………………………………….16


The Telecommunications Network……………………………………………………………………………..17


The Network Hierarchy (Post-1984)………………………………………………………………………….17


The Public-Switched Network…………………………………………………………………………………..17


The North American Numbering Plan…………………………………………………………………………18


Private Networks……………………………………………………………………………………………………..18


Hybrid Networks………………………………………………………………………………………………………18


Hooking Things Up………………………………………………………………………………………………….18


Equipment………………………………………………………………………………………………………………19


Chapter 3: Virtual Private Networks………………………………………………………………………………….20


History……………………………………………………………………………………………………………………20


Intelligent PBX Solution……………………………………………………………………………………………22


Virtual Private Networks (VPNs)………………………………………………………………………………..22


Users May Not Like It……………………………………………………………………………………………….25


Chapter 4: Data Virtual Private Networks (VPNs)………………………………………………………………27


Internet-Based VPN………………………………………………………………………………………………..27


Goals……………………………………………………………………………………………………………………..28


Shared Networks……………………………………………………………………………………………….28


Internet…………………………………………………………………………………………………………….28


Performance………………………………………………………………………………………………………29


Outsourcing)………………………………………………………………………………………………………29


Security…………………………………………………………………………………………………………….30


Creating the VPN…………………………………………………………………………………………………….33


Encryption…………………………………………………………………………………………………………33


Key Handling……………………………………………………………………………………………………..33


Public Key Cryptography (RSA)…………………………………………………………………………..34


Authentication……………………………………………………………………………………………………34


Router-Based VPN…………………………………………………………………………………………………38


Firewall-Based VPN………………………………………………………………………………………………..39


VPN-Specific Boxes………………………………………………………………………………………………..39


Throughput Comparison…………………………………………………………………………………………..40


Chapter 4: Data Virtual Private Networks (VPNs)


Remote Management of VPN Components;………………………………………………………………..41


Cost Considerations;………………………………………………………………………………………………..41


Proprietary Protocols;………………………………………………………………………………………….41


VoIP VPN………………………………………………………………………………………………………….42


Summary;……………………………………………………………………………………………………………….42


Chapter 5: Advanced Intelligent Networks (AINs)……………………………………………………………..43


Overview………………………………………………………………………………………………………………..43


Intelligent Networks (INs)…………………………………………………………………………………………43


Advanced Intelligent Networks (AINs)………………………………………………………………………..44


Information Network Architecture………………………………………………………………………………45


Combining AIN and CTI Services………………………………………………………………………………45


The Intelligent Peripheral (IP)……………………………………………………………………………………47


IP Services;…………………………………………………………………………………………………………….48


Software Architecture: Client, Router, Server………………………………………………………………49

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