Telecall Japan KK Japan

Point of Presence in JAPAN, Philippines, Brazil, USA, Uk, Portugal and Hong Kong

Gatekeepering, H.323 VoIP Gateway, Partnering for Origination and Termination, PC to Phone, Phone To PC, Phone To Phone, SIP VoIP Gateway, Termination, Web Call, Web To Phone

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General office

Telecall Japan KK
Koto Ku Umibe 11-2 Telecall Tokyo Bldg 3F
Tokyo To
Tokyo ,135-0012
Japan

Phone: +81-3-6659-8259
Phone: +81-90-7674-9298
Site: http://www.telecall.jp or www.telecallnet.com

Contact Person

Yamana Veridiana / Account carrier manager
Phone: +81-52-9796165
Phone: +81-90-7674-9298

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Detailed description of SIP protocol

SIP protocol was made within IETF (Internet Engineering Task Force) – organization occupied with establishing Internet standards and general standards concerning TCP/IP protocols.

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