September 2008
Intermediate to advanced
550 pages
18h 10m
English
Content preview from VoIP Voice and Fax Signal ProcessingBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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CONTENTS
1 PSTN Basic Infrastructure, Interfaces, and Signals
1.2.1 FXS and FXO Analog Interfaces
1.2.2 SLAC, CODEC and codec–Clarifications on Naming Conventions
1.2.3 TIP-RING, Off-Hook, On-Hook, and POTS Clarifications
1.2.5 T1/E1 Family Digital Interface
1.3 Data Services on Telephone Lines
1.4 Power Levels and Digital Quantization for G.711 μ/A-Law
1.4.1 μ-Law Power Levels and Quantization
1.4.2 A-Law Power Levels and Quantization
1.5 Significance of Power Levels on Listening
1.6 TR-57, IEEE-743, and TIA Standards Overview
1.6.1 TR-57 Transmission Tests
1.6.2 IEEE STD-743–Based Tests
1.6.3 Summary on Association of TR-57, IEEE, and TIA Standards
2 VoIP Overview and Infrastructure
2.1.1 CPE and Naming Clarifications of VoIP Systems in this Book
2.1.2 VoIP End-User Call Combinations
2.2 Typical VoIP Deployment Example
2.3 Network and Acoustic Interfaces for VoIP
2.4 VoIP Systems Working Principles
2.4.2 Voice Flow in the VoIP Adapter
2.4.3 Voice and Fax Software on VoIP Adapter
2.4.5 Residential Gateway Example
2.4.7 Wireless LAN-Based IP Phone
2.4.11 Hosting Long-Distance VoIP through PSTN
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