Copyright © 2003 Japan Registry Service Co., Ltd. 1 IP Telephony in Japan August 24, 2003 Hiro Hotta JPRS (Japan Registry Service Co., Ltd.)

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Presentation transcript:

Copyright © 2003 Japan Registry Service Co., Ltd. 1 IP Telephony in Japan August 24, 2003 Hiro Hotta JPRS (Japan Registry Service Co., Ltd.)

Copyright © 2003 Japan Registry Service Co., Ltd. 2 ~Sept.1987 only NTT provided public telephone services First half of 1990s communication cost decreased rapidly by competition Latter half of 1990s share of mobile phones grew rapidly subscribers of mobile phones overtook PSTN in March ~ broadband including IP telephony grew rapidly Trends in Communication Market in Japan History Change of Regulation –Privatization of Public Telecom Corporation –Relaxation of Regulation Evolution of Devices –Small, Wireless, High-functioned (e.g., mobile phones with cameras) Popularization of Internet and IP Technology –From Circuit Exchange to Packet Data Exchange Drivers individual IP telephone service providers ==> a couple of groups

Copyright © 2003 Japan Registry Service Co., Ltd. 3 Patterns of IP Phones PSTN->IP->PSTN PSTN->IP IP->PSTN IP->IP IP Networ k Gateway IP Networ k Gateway adapter IP phone IP Networ k Gateway adapter IP phone IP Networ k adapter IP phone adapter IP phone (managed)

Copyright © 2003 Japan Registry Service Co., Ltd. 4 IP Telephony and Quality Classes ISP alliance for IP phone services proposes ‘Class B’ for end-to-end communication quality Class A (PSTN quality) Class B (mobile quality) Class C General voice transmission quality rate (R) End-to-end delay Call failure rate (connection quality) >80>70>50 <100ms<150ms<400ms ≦ 0.15 (reference value) *R value and delay values are considered satisfactory when 95% of the samples are satisfied

Copyright © 2003 Japan Registry Service Co., Ltd. 5 Assignment of 050-xxxxxxxx to IP Phones 050-CDEF-GHJK xxxxxxxx started to be assigned to IP phones so that PSTN users can make calls to IP phones from fall PSTN=>IP phone : in service from fall 2003 IP phone=>IP phone : in service IP Phone Numbering Structure Assigned to service provider Assigned to subscriber MPHPT has assigned 9 million 050 phone numbers to service providers Meaning IP phone

Copyright © 2003 Japan Registry Service Co., Ltd. 6 population127 million number of households 47 million PSTN subscribers 61 million mobile subscribers 75 million Internet users 70 million broadband users 20 million broadband subscribers 7.8 million Number of IP Phone Users end of million 2007 (estimated)22.73 million source ： MPHPT : White Paper “Information and Communications in Japan”, NTT East, NTT West Other relevant statistics

Copyright © 2003 Japan Registry Service Co., Ltd. 7 Yen US$ local 8.5 / 3min0.07 / 3min domestic long distance 80 / 3min0.66 / 3min to US180 / 3min1.5 / 3min to Korea360 / 3min3.0 / 3min free of charge domestic 8 / 3min0.07 / 3min to US24 / 3min0.2 / 3min to Korea90 / 3min0.75 /3 min (other data) PSTN basic fee2000 / month17 / month ADSL additional fee3500 / month30 / month 100M Fiber< / month< 80 / month CATV < / month< 80 / month Communication Charges

Copyright © 2003 Japan Registry Service Co., Ltd. 8 Current / Future Issues Emergency calls –under technical investigation Caller ID notification form IP phones –will be in service in fall 2003 Call from PSTN or mobiles to IP phones –will be in service in fall 2003 Call among IP phone service providers –Being interconnected among providers in the same group Several groups –Japan ENUM Study Group –ENUM Trial Japan Call during Power failure