Technology - IP Techniques 8 - VoIP Applications, ENUM & Addressing

Synopsis

This report discusses disparate VoIP application fields including residential and SOHO, Wireless and Mobile, WiFi, PABX and Centrex replacement, and use in carrier backbone networks. Also examined is the traditional E.164 telephone numbering system, VoIP’s more flexible numbering (addressing) approaches and methods of mapping E.164 to VoIP addresses, including ENUM, DUNDi and E164.org. Major VoIP server systems including Asterisk, SER, SipX and YATE are also discussed.

1. Synopsis
2. Introduction
3. Business and technical models
- 3.1 Residential and SoHo
  - 3.1.1 Ubiquitous NAT deployment
  - 3.1.2 VoIP client initiates communication link
- 3.2 Wireless and mobile VoIP
  - 3.2.1 3G mobile networks
  - 3.2.2 IMS and PoC
  - 3.2.3 User controlled VoIP
  - 3.2.4 WiFi and VoIP
- 3.3 PABX and Centrex replacement
- 3.4 Telecommunications Carrier VoIP
  - 3.4.1 Long distance
  - 3.4.2 VoIP carriers
  - 3.4.3 Carrier backbone and exchange replacement
4. Numbering and addressing
- 4.1 E.164
- 4.2 ENUM
  - 4.2.1 ENUM’s function
  - 4.2.2 ENUM operation
  - 4.2.3 Registry for ENUM services
  - 4.2.4 ENUM privacy and security
- 4.3 IPTEL and TRIP
- 4.4 E164.org
- 4.5 SIP Broker
- 4.6 Distributed Universal Number Discovery (DUNDi)
5. VoIP telephony application platforms
- 5.1 Asterisk
  - 5.1.1 AsteriskNOW
  - 5.1.2 Evolution PBX
  - 5.1.3 Trixbox
  - 5.1.4 Trixbox appliance
- 5.2 SIP Express Router (SER)
- 5.3 SipX
- 5.4 YATE
6. Related reports