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Voice over IP (Vo. IP) Effects on Telecom Industry Zahid Irfan 2001 -03 -0037

What I am going to talk about Communication Networks n Internet n Birth & Development of Vo. IP n Effects of Vo. IP on Telecom Industry’s Response n Conclusions and Recommendations n

Internet’s Birth. . 1971 Source : http: //www. cybergeography. org/atlas/historical. html

Internet’s Explosion … 1999 Source : http: //mappa. mundi. net/maps_007/

What drives the Internet n The Internet’s backbone. . The protocols – Token Ring – User Datagram Protocol (UDP) – Internet Control Message Protocol (ICMP) – Transmission Control Protocol/ Internet Protocol (TCP/IP) http: //oac 3. hsc. uth. tmc. edu/staff/snewton/tcp-tutorial/

Why not USE the NET… n The motivation – The high rates of telephone calls from Israel to USA. ($2. 5/min) n The solution – Transmission of Voice signals over the net n Emergence of Voice over IP

Voice over IP n Voice over IP (Vo. IP) – Conversion of voice signal to stream of packets and using the Network line to transmit to destination and then reconvert it to voice signals

Data and Telephone Network Source : www. howstuffworks. com

Vo. IP Network PSTN Call Agent Application Servers Media GW Source of Value Added Services Signaling GW IP Network Address Re-solver ENUM Clients • • • Source: www. technet. com

Applications of Vo. IP Internet aware devices n Vo. IP/PSTN hybrid gateways n Interoffice trunking over corporate intranet n Remote access n Voice calls from Mobile PCs and mobile phones n

Benefits Cost Reduction n Simplification n – same network (easy maintenance) – optimization of bandwidth – Fault tolerance n Advanced Applications – video conferencing – white-boarding and shared screens

Quality of Service (Qo. S) Sharing of available capacity n Latency of transmission n Authentication and Encryption(Secure Telephony n Reliability of Transport n

Growth of Vo. IP n Estimates of various sources · · $500 m to $18. 7 b in 1999 -2004 (106% growth) -IDC $270 m to $12. 6 b in 1999 -2004 - Ovum 30% of international phone traffic will be carried over data lines in 2002 against 0. 2% in 2001 - Probe $4 b to $23 b in 2001 -2004. - Kagoor Souce: www. fortune. com

Telecom Industry Losses Source: http: //www. it. kth. se/voip. html

Telecom Strikes Back PTCL signs contract with M/s ABS Corporation (min. profit $36 annually) n AT&T-Yahoo consortium acquires 37% of Net 2 Phone shares n Indian Government to lift ban on Vo. IP in 2002 n

Vo. IP without Enhanced Service Provider Status Source : Merrill Lynch Corporation

Future Developments Text to voice conversion n Voice to text conversion n Voice response systems n Replacement of Mobile system with IPbased systems n

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