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600 Mountain Ave, Rm# 2A-208 Murray Hill, NJ 07974 (908) 582-5499 mur@lucent

Murali Aravamudan Head, Communication Software Research Department Bell Labs Innovations, Lucent Technologies. 600 Mountain Ave, Rm# 2A-208 Murray Hill, NJ 07974 (908) 582-5499 mur@lucent.com. Why Internet Telephony?. IP Economics

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600 Mountain Ave, Rm# 2A-208 Murray Hill, NJ 07974 (908) 582-5499 mur@lucent

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  1. Murali AravamudanHead, Communication Software Research DepartmentBell Labs Innovations, Lucent Technologies 600 Mountain Ave, Rm# 2A-208 Murray Hill, NJ 07974 (908) 582-5499 mur@lucent.com

  2. Why Internet Telephony? • IP Economics • Crowe’s law (exponential cost reduction in transporting a bit per mile) coupled with Moore’s law • New access arrangements (cable, xDSL) enable new (IP) devices • New signaling services (not limited to Intelligent Network services such as call forwarding, reach me etc.) • New media services (not limited to 3 KHz voice)

  3. What can we do today? • IP Phone to IP Phone • PC and other form factors (netmeeting, vocaltec, selsius etc.) • IP Phone to PSTN Phone • CTI based IP Telephony hop off gateways • PSTN Phone to IP/PSTN Phone (two stage dialing) • morphed RAS devices • Seamless PSTN to PSTN Phone (SS7 integration) • SS7 trunk access and IP backbone (basis for NextGen telcos)

  4. Issues • Technical • standardization of Media Gateway Control Protocols (IPDC, SGCP etc.) • the (stillborn) H.323 gatekeeper • need guarantees? (delay, jitter etc.) • service creation environment in the NextGen Telco (it is not just open APIs, and protocols) • Regulatory • unbundled copper for new access arrangements • cookie cutter process for becoming a NextGen Inter Exchange Carrier

  5. What will happen in the next three years? • Seamless PSTN to PSTN Phone (SS7 integration) • NextGen Telcos (IXCs) deploying fiber networks optimized for IP • Internet Telephony will hit mass market without the mass knowing it (VoIP is transparently used by Tandem arrangements in IXCs) • SS7 trunk access and IP backbone • Inband advanced intelligent network services will be done using servers in the IP network instead of circuit adjuncts (read: slow death of Voice on ATM) • Integrated access services for small/mid size business will increase demand for native IP phones/PBXs • IP Phones (that are affordable) will happen • new media services as part of telephony

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