This book explains why people and companies are using SIP equipment and software to efficiently upgrade existing telephone systems, develop their own advanced communications services, and to more easily integrate telephone network with company information systems.

SIP technology is a well-established standardized communication protocol that has many low cost devices and software application development tools available. The use of SIP product and software allows companies to cost-effectively upgrade and eventually replace existing (legacy) telephone systems with more cost effective more....

Sample Diagrams

There are 70 explanatory diagrams in this book

Gateway Management

This figure shows how gateway manager software can be used to configure and manage gateways that connect the SIP network to other networks such as the public switched telephone network. This example shows how the gateway manager contains the configuration information for the gateway including IP address, capabilities such as speech coders, protocols, and access control information.

IP Centrex System

This figure shows a basic IP Centrex system that allows a local exchange company (LEC) in New York City to provide Centrex services to a company in Los Angeles. In this diagram, the LEC in New York City uses a class 5 switch to provide for plain old telephone (POTS) and Centrex services to their local customers. The Centrex software is installed in the switch and existing Centrex customers in the local area continue to connect their telephone stations directly to the Class 5 switch. To provide Centrex services to new customers located outside the geographic area, the LEC has installed a network gateway in New York that can communicate with the customer gateway in Los Angeles. Because the network gateway converts all the necessary signaling commands to control and communicate with the customer gateway, the class 5 switch does not care if the customer gateway is in Los Angeles or Tokyo. It simply provides the Centrex services as the users request.

Voice over Data (VoIP) Sharing Bandwidth

This figure shows how a data network shares bandwidth for both voice and data communications. This diagram shows that a single router is providing data communications service to IP telephones and computer workstations. In this example, a computer workstation is transferring a large file and the IP telephone is continuously sending a small amount of data (90 kbps). Because the LAN data network (Ethernet) has a maximum packet size of 1500 bytes of data and a standard high-speed data transmission rate of 100 Mbps, the router automatically divides the large file into smaller data blocks and access is shared between the IP telephone and the computer workstation. When the data packets arrive at the relatively low-speed WAN connection, congestion can occur. If congestion were to occur, the router connected to the WAN connection would begin to delay the transmission of packets. In this example, the WAN router gives priority to the voice over data network packets and delays the file transfer packets.

Table of Contents

- Basic VoIP Operation
- SIP System Overview
- Communication Services
- Private Telephone Systems
- Information Systems
- Network Management
- Communication System Economics
- SIP Evolution

- Protocols
- The Session Initiation Protocol (SIP)
- End User Devices (User Agents)
- Proxy Servers (Call Processors)
- Registrars (Customer Status)
- Location Servers (Address Tracking)
- Redirection Servers (Call Forwarding)

- Voice Service
- Mobility Management (via Registration)
- Call Hold
- Call Forwarding
- Click To Dial

- Direct Connect
- Adding VoIP Lines to a Data Network
- Integrated Service
- Replace a System VoIP Lines

- Order Processing Systems
- Web Servers
- Instant Messaging (IM)
- Web Seminars (Webinar)
- Mobile Communication Information Service
- Database System
- Dispatch Systems
- Security Systems
- Interactive Television

Service Provisioning
- System Capacity Allocation
- Policy Server
- Equipment Configuration
- Equipment Firmware
- Testing and Maintenance
- Test Plan
- Network Address Translation (NAT)
- Firewalls
- Integrated System Management

- Equipment Cost
- Software Cost
- Service Cost
- Other Costs

- SIP Extensions
- SIP Toolkits
- Call Processing Scripts and Servlets
- SIP for Instant Messaging and Presence Leveraging Extensions (SIMPLE)
- SIP Info Method Extensions

Mr. Harte has over 29 years of experience in the electronics industry including company leadership, product management, development, marketing, design, and testing of telecommunications (cellular), radar, and microwave systems. He has been issued patents relating to cellular technology. He has authored over 75 articles on related subjects and has been a speaker and panel moderator at industry trade events. Mr. Harte earned executive MBA at Wake Forest University and received his Bachelors degree from University of the State of New York. During the TDMA digital cellular standard development process, Mr. Harte served as an editor and voting company representative for the Telecommunications Industries Association (TIA) TR45.3, digital cellular standards committee. As of 2003, Mr. Harte had authored and co-authored over 20 books relating to telecommunications technology. He has served as a consultant and expert witness for leading companies including Ericsson, Siemens, VLSI, AMD, Casio, Samsung, Sony, ATT, Nokia, Hughes and many others.

Mr. Bowler is an independent telecommunications training consultant. He has almost 20 years experience in designing and delivering training in the areas of wireless networks and related technologies, including CDMA, TDMA, GSM and 3G systems. He also has expertise in Wireless Local Loop and microwave radio systems and has designed and delivered a range of training courses on SS7 and other network signaling protocols. Mr. Bowler has worked for a number of telecommunications operators including Cable and Wireless and Mercury Communications and also for Wray Castle a telecommunications training company where he was responsible for the design of training programmes for delivery on a global basis. Mr. Bowler was educated in the United Kingdom and holds a series of specialized maritime electronic engineering certificates.

Introduction to SIP IP Telephony Systems BK7780538$14.99